CN105897346B - Device for being handled optical signal - Google Patents
Device for being handled optical signal Download PDFInfo
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- CN105897346B CN105897346B CN201610203375.7A CN201610203375A CN105897346B CN 105897346 B CN105897346 B CN 105897346B CN 201610203375 A CN201610203375 A CN 201610203375A CN 105897346 B CN105897346 B CN 105897346B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/564—Power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2589—Bidirectional transmission
- H04B10/25891—Transmission components
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
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- Optical Communication System (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
This application discloses a kind of devices for being handled optical signal, the device includes: printed circuit board, controller and VOA, the controller and the VOA are mounted on the printed circuit board, the output end of the VOA is connected with the input terminal for the light power meter being not installed on the printed circuit board, the output end of the light power meter is connected with the input terminal of the controller, and the output end of the controller is connected with the input terminal of the VOA.Device provided in an embodiment of the present invention, by the corresponding relationship of the first parameter value of storage and the value of first control signal, controller controls the VOA according to the control signal that the corresponding relationship determines, helps to improve the precision of the optical signal through decaying of VOA output.
Description
Technical field
The present invention relates to electronic field more particularly to a kind of devices for being handled optical signal.
Background technique
Adjustable optical attenuator (Variable Optical Attenuator, VOA) is a kind of light used in fiber optic communication
Passive device.VOA can carry out attenuation processing to optical signal.
VOA specifically can be MEMS (Micro-Electro-Micromechanical System, MEMS)
VOA。
Central processing unit (Central Processing Unit, CPU) or field programmable gate array (Field-
Programmable Gate Array, FPGA) etc. controllers can to VOA send control signal, to control VOA to input
The optical signal of the VOA carries out attenuation processing.The precision of the optical signal through decaying of VOA output is poor.
Summary of the invention
In view of this, being helped to improve the embodiment of the invention provides a kind of device for being handled optical signal
The precision of the optical signal through decaying of VOA output.
In a first aspect, provide a kind of device for being handled optical signal, the device include: printed circuit board,
Controller and VOA, the controller and the VOA are mounted on the printed circuit board, the output end of the VOA be not installed on
The input terminal of light power meter on the printed circuit board is connected, the input terminal phase of the output end and the controller of the light power meter
Even, the output end of the controller is connected with the input terminal of the VOA；The controller is used to send first control signal to the VOA；It should
VOA is used to receive the first optical signal by the input terminal of the VOA, to first optical signal under the control of the first control signal
Attenuation processing is carried out to generate the first optical signal through decaying, and this is exported first through decaying by the output end of the VOA
Optical signal；The light power meter determines the function of first optical signal through decaying for receiving first optical signal through decaying
Rate value, and send to the controller performance number of first optical signal through decaying；The controller is also used to save the first ginseng
The corresponding relationship of the value of numerical value and the first control signal, which is the performance number of first optical signal through decaying
Functional value.
By the corresponding relationship of the first parameter value of storage and the value of first control signal, controller is true according to the corresponding relationship
Fixed control signal controls the VOA, can effectively improve the precision of the optical signal through decaying of VOA output.
With reference to first aspect, in the first possible implementation of the first aspect, first parameter value be equal to this
Once the performance number of the optical signal of decaying, or equal to the performance number of first optical signal and the function of first optical signal through decaying
The difference of rate value.
Some implementations with reference to the above first aspect in the second possible implementation of the first aspect should
Device further includes optical module, and the output end of the optical module is connected with the input terminal of the VOA, and the optical module for the VOA for providing
First optical signal.
Some implementations with reference to the above first aspect in a third possible implementation of the first aspect should
Device further includes digital-to-analogue (digital-to-analog, DA) converter, which is used for: by the first control signal
Value is converted to the first analog signal；The VOA is specifically used for carrying out first optical signal under the control of first analog signal
Attenuation processing is to generate first optical signal through decaying.
Some implementations with reference to the above first aspect in a fourth possible implementation of the first aspect should
Device further includes memory, which is also used to: indicating that the memory stores first parameter value and the first control signal
Value corresponding relationship.
Some implementations with reference to the above first aspect in the fifth possible implementation of the first aspect should
The corresponding relationship of the value of first parameter value and the first control signal is the first list item in mapping table, which includes should
The value of first parameter value and the first control signal；The controller is also used to by searching and first parameter in the mapping table
Be worth matched list item determine first list item be with the matched list item of the first parameter value, obtained from first list item this first
Parameter value generates third according to first parameter value and controls signal, and sends third control signal, the third to the VOA
The value for controlling signal is equal to the value of the first control signal；The VOA is also used to receive third light letter by the input terminal of the VOA
Number, attenuation processing is carried out to the third optical signal to generate light of the third through decaying and believe under the control of third control signal
Number, and optical signal of the third through decaying is exported by the output end of the VOA.
Some implementations with reference to the above first aspect in the sixth possible implementation of the first aspect should
Controller is also used to send second control signal to the VOA；The VOA is also used to receive the second light letter by the input terminal of the VOA
Number, attenuation processing is carried out to second optical signal to generate the second light through decaying and believe under the control of the second control signal
Number, and second optical signal through decaying is exported by the output end of the VOA；The light power meter is also used to receive second warp
The optical signal of decaying, determines the performance number of second optical signal through decaying, and sends this second through decaying to the controller
Optical signal performance number；The controller is also used to save the corresponding relationship of the second parameter value and the value of the second control signal,
Second parameter value is the functional value of the performance number of second optical signal through decaying, the value of the first control signal and this second
The value for controlling signal is unequal, and first parameter value and second parameter value are unequal；The controller be also used to according to this first
Value, first parameter value, the value of the second control signal and second parameter value for controlling signal, determine linear function y=f
(x), the value of the first control signal is equal to f (first parameter value), and the value of the second control signal is equal to f (second parameter
Value)；The controller is also used to obtain third parameter value, according to the third parameter value and the linear function, determines third control letter
Number value, and to the VOA send the third control signal, the third control signal value be equal to f (the third parameter value)；It should
VOA is also used to receive third optical signal by the input terminal of the VOA, believes under the control of third control signal the third light
Number attenuation processing is carried out to generating optical signal of the third through decaying, and the third is exported through declining by the output end of the VOA
The optical signal subtracted, the third parameter value are the functional values of the performance number of optical signal of the third through decaying, the third parameter value with
First parameter value is unequal, and the third parameter value and second parameter value are unequal, the third control signal value and this
The value of one control signal is unequal, and the value which controls the value and the second control signal of signal is unequal.
Optionally, which includes CPU or FPGA, which includes flash memory (flash memory).
Second aspect, provides a kind of system for being handled optical signal, which includes first aspect or
Device and light power meter in any possible implementation of one side, the input terminal of the light power meter and are mounted on printed circuit
The output end of VOA on plate is connected, the input of the output end of the light power meter and the controller being mounted on the printed circuit board
End is connected.
By the corresponding relationship of the first parameter value of storage and the value of first control signal, controller is true according to the corresponding relationship
Fixed control signal controls the VOA, helps to improve the precision of the optical signal through decaying of VOA output.
Optionally, which further includes personal computer (personal computer, PC), the output of the light power meter
End is connected with the input terminal of the controller to be specifically included the output end of the light power meter and passes through the input terminal of the PC and the controller
It is connected.
The third aspect, provides a kind of method for being handled optical signal, this method by above-mentioned second aspect or
The system of any possible implementation of second aspect executes.Alternatively, this method is by above-mentioned first aspect or first aspect
Any possible implementation device execute.
Fourth aspect provides a kind of device, comprising: memory, processor, transceiver, VOA, light power meter and bus
System.Wherein, the memory, the processor, the transceiver, the VOA and the light power meter are connected by the bus system, this is deposited
For storing instruction, which is used to execute the instruction of memory storage to reservoir, receives signal or hair to control transceiver
The number of delivering letters, and when the processor executes the instruction of memory storage, the execution is so that the processor realizes second aspect
Or the controller in any one possible implementation of second aspect.Alternatively, when the processor executes memory storage
Instruction when, the execution is so that the processor is realized in any one possible implementation of first aspect or first aspect
Controller.
5th aspect, provides a kind of computer storage medium, for storing computer software, computer software can be real
The function of existing above-mentioned aspect description.
In the embodiment of the present invention, the name of each entity itself is not used in restriction the scope of the claims.In practical implementations,
These entities can occur with other titles.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention
Attached drawing is briefly described, it should be apparent that, drawings described below is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is an application scenarios of technical solution provided in an embodiment of the present invention.
Fig. 2 is the structural schematic diagram of the device provided in an embodiment of the present invention for being handled optical signal.
Fig. 3 is the structural schematic diagram of the system provided in an embodiment of the present invention for being handled optical signal.
Fig. 4 is the method provided in an embodiment of the present invention for being handled optical signal.
Fig. 5 is another structural schematic diagram of the device provided in an embodiment of the present invention for being handled optical signal.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention is clearly retouched
It states.Obviously, described embodiment is a part of the embodiments of the present invention, rather than whole embodiments.Based in the present invention
Embodiment, the other embodiments that those of ordinary skill in the art can obtain without making creative work.
VOA is a kind of optical passive component in fiber optic communication.VOA is realized by fading transmission optical power to the real-time of signal
Control can constitute reconfigurable optical add/drop multiplexer with optical devices such as light wavelength division multiplexing, spectroscopic detectors, erbium-doped fiber amplifiers
(Reconfigurable Optical Add-Drop Multiplexer, ROADM), light is adjustable wavelength division multiplexer (Variable
Multiplexer, VMUX) etc. modules.VOA can also be used directly in the output end of optical module on veneer, for realizing veneer output
The adjusting of optical power.The VOA made of MEMS also has decaying other than keeping the comprehensive optical property of traditional technology VOA
Range is big, driving voltage is low, it is small in size, be easy to the advantages that multichannel integrated, fast response time, high cost performance.It should be understood that this hair
VOA in bright embodiment can use MEMS package, can also using small-sized encapsulated (Small Form Pluggable,
SFP), the embodiment of the present invention is only illustrated by taking MEMS VOA as an example.
Fig. 1 shows a kind of possible application scenarios of technical solution provided in an embodiment of the present invention.As shown in Figure 1, with
Family is communicated by the first electronic equipment with the second electronic equipment.First electronic equipment can be computer or mobile phone.
Second electronic equipment can be computer or mobile phone.The electric signal that first electronic equipment generates passes through optical transmitter, conversion
At optical signal.Optical signal carries out attenuation processing by VOA and generates the optical signal through decaying, and the optical signal through decaying passes through light-receiving
Device is converted into electric signal.The electric signal that optical receiver generates is sent to the second electronic equipment by optical receiver.
Optical transmitter and optical receiver can be physically integrated in the integrated module of optical transceiver.Optical transmitter and light-receiving
Device can also be independent from each other optical module respectively.Optical transmitter and optical receiver can be used for the transmission of optical signal, realize electricity
Light/light-to-current inversion.Transmission medium is optical fiber.VOA is used to realize the real-time control to optical signal.Usually also wrapped in fiber optic communication
Include interchanger as shown in Figure 1.
Fig. 2 shows the structural schematic diagrams of the device 100 provided in an embodiment of the present invention for being handled optical signal.
As shown in Fig. 2, the device 100 includes: printed circuit board 110, controller 120 and VOA 130, the controller 120 and should
VOA 130 is mounted on the printed circuit board 110, the output end of the VOA 130 and is not installed on the printed circuit board 110
Light power meter 200 input terminal be connected, the output end of the light power meter 200 is connected with the input terminal of the controller 120, the control
The output end of device 120 processed is connected with the input terminal of the VOA 130；The controller is used to send first control signal to the VOA；It should
VOA is used to receive the first optical signal by the input terminal of the VOA, to first optical signal under the control of the first control signal
Attenuation processing is carried out to generate the first optical signal through decaying, and this is exported first through decaying by the output end of the VOA
Optical signal；The light power meter determines the function of first optical signal through decaying for receiving first optical signal through decaying
Rate value, and send to the controller performance number of first optical signal through decaying；The controller is also used to save the first ginseng
The corresponding relationship of the value of numerical value and the first control signal, which is the performance number of first optical signal through decaying
Functional value.
Device 100 shown in Fig. 2 can be applied to scene shown in FIG. 1.Specifically, device 100 shown in Fig. 2 can be real
Optical transmitter and VOA in existing Fig. 1, undertake the role of the optical transmitter and VOA in Fig. 1.
In order to improve VOA output the optical power precision through decaying, in the technical solution of the embodiment of the present invention, by
The corresponding relationship between the value of the first control signal and the first parameter value is stored in controller, in order to which the VOA makes subsequent
With in the process, controller controls the VOA according to the control signal that the corresponding relationship determines.For example, can be according to the first parameter value
Search in the mapping table, and determine with the matched control signal of first parameter value, according to the control signal to VOA input terminal
The optical signal of input carries out attenuation processing, and the value of the control signal of the determination can be equal with the value of first control signal.
Therefore, the device provided in an embodiment of the present invention for being handled optical signal helps to improve VOA output
Optical power precision through decaying.
In embodiments of the present invention, pair that controller can only between the value and the first parameter value of storage first control signal
It should be related to, also can store the corresponding relationship between the value of second control signal and the second parameter, that is, store multipair control signal
Value and parameter value between corresponding relationship.The scene that attenuation required for attenuation processing is steady state value is being carried out to optical signal
Under, in the controller can only storage a pair of control signal value and parameter value between corresponding relationship, but to optical signal into
Attenuation required for row attenuation processing is then to need to store at least two pairs control letters in the controller under the scene of the value of variation
Number value and parameter value between corresponding relationship.For convenience, the present invention is to store the multipair value and parameter for controlling signal
It is illustrated for corresponding relationship between value, the present invention is not construed as limiting application scenarios.
It should be understood that the light power meter in the embodiment of the present invention can be hand-held light power meter on the market, it is also possible to light
The light power meter of electric transducer and analog-digital converter composition.For example, light power meter can pass through photodiode and modulus
(analog-to-digital, AD) converter is realized.
Controller in the embodiment of the present invention can be central processing unit (Central Processing Unit, CPU),
It is also possible to field programmable gate array (Field-Programmable Gate Array, FPGA), can also be that other have
The unit of control function.
It should also be understood that being connected in embodiments of the present invention can refer to that two entities are connected directly, light can also be passed through
Connector or electric connector connection, can also be arranged other devices, such as amplifier etc., this hair between two connected entities
It is bright to be not especially limited.
The first control signal that controller is sent in embodiments of the present invention is digital signal, VOA can directly this
The first optical signal is carried out in attenuation processing, such as VOA may include digital analog converter, VOA under the control of one control signal
Attenuation processing can be carried out to the first optical signal under the first control signal indirectly, for example, digital analog converter is controlled first
Signal is converted into the first analog signal, and VOA carries out attenuation processing to the first optical signal under the control of the first analog signal.
Optionally, first parameter value be the performance number of first optical signal through decaying functional value can refer to this first
Parameter value is equal to the performance number of first optical signal through decaying, or refers to that first parameter value is equal to the power of first optical signal
The difference of value and the performance number of first optical signal through decaying.
Optionally, which further includes digital-to-analogue (digital-to-analog, DA) converter, which passes through the DA
Converter controls the VOA, and specifically, which is converted to the first analog signal for the value of first control signal；The VOA exists
Attenuation processing is carried out to generate first optical signal through decaying to the first optical signal under the control of first analog signal.
In embodiments of the present invention, which can be voltage.The value of the first control signal can be DA
The amplitude for the first analog signal that converter generates, i.e. the first voltage value.The pad value of the first voltage value and the VOA are into just
Ratio.For example, when the first voltage value is 10mV, the function of the performance number of first optical signal and first optical signal through decaying
The difference of rate value is that the first pad value is 2dBm, and when which is 20mV, which is 4dBm.First control
The value of signal can also be that controller inputs to the first DA value by hexadecimal representation of D/A converter, the DA value and the VOA
Pad value be directly proportional.For example, first pad value is 2dBm when the first DA value is 0x0F, the first DA value is
When 0xFF, which is 4dBm.The value of control signal is also possible to the attenuation degree that other are used to indicate optical signal
Value.For convenience, the embodiment of the present invention illustrates to the value of control signal by taking voltage value as an example.
Specifically, which can use the mode of traversal to choose N number of voltage value since voltage value is 0, respectively root
The optical signal through decaying accordingly, N number of light through decaying that light power meter will be read are exported according to N number of voltage value control VOA
The optical power value of signal is sent to controller, and controller deposits the optical power value of this N number of voltage value and N number of optical signal through decaying
Storage is got up.Specifically, the corresponding relationship of this N number of voltage value and the optical power value of N number of optical signal through decaying is stored in mapping
In table.It for example, be 0 from voltage value with step-length is that 4mV is traversed that the optical power value that receives to VOA input terminal is constant to be
The optical signal of 20dBm carries out attenuation processing, and when the voltage value of VOA control terminal input is 20mV, the pad value of the VOA reaches
The maximum attenuation value 10dBm of the VOA records each voltage value and according to each voltage value then during traversal respectively
The performance number for controlling the optical signal through decaying of VOA output, in this way, the power of optical signal of the available voltage value-through decaying
The mapping table of value is as shown in table 1.
Table 1
| Voltage value (mV) | The performance number (dBm) of optical signal through decaying |
| 4 | 18.1 |
| 8 | 15.9 |
| 12 | 14.3 |
| 16 | 11.7 |
| 20 | 9.8 |
As shown in Table 1, under the premise of the performance number of the received optical signal of VOA input terminal is 20dBm, when voltage value is
When 4mV, the performance number of the optical signal through decaying is 18.1dBm, when voltage value is 8mV, the function of the optical signal through decaying
Rate value is 15.9dBm, and for another example, when voltage value is 20mV, the performance number of the optical signal through decaying is 9.8dBm.
Technical solution of the present invention is illustrated it should be understood that the embodiment of the present invention is only exemplified by Table 1, but the present invention is simultaneously
It is without being limited thereto, for example, the step-length can be 2,10 class values of storage etc. coexist.
Optionally, controller stores this N number of voltage value and N number of pad value, and it is defeated that N number of pad value is respectively equal to VOA
Enter the difference of the performance number of the optical signal through decaying of the performance number for holding received optical signal and the output of VOA output end.For example,
It is equally 0 from voltage value with step-length is that 4mV is traversed the constant light for 20dBm of optical power value received to VOA input terminal
Signal carries out attenuation processing, and when the voltage value that the control terminal of VOA inputs is 20mV, the pad value of the VOA has reached the VOA's
Maximum attenuation value 10dBm records each voltage value and each pad value then during traversal respectively, in this way, available
Voltage value-pad value mapping table is as shown in table 2.
Table 2
| Voltage value (mV) | Pad value (dBm) |
| 4 | 1.9 |
| 8 | 4.1 |
| 12 | 5.7 |
| 16 | 8.3 |
| 20 | 10.2 |
As shown in Table 2, under the premise of the performance number of the received optical signal of VOA input terminal is 20dBm, when voltage value is
When 4mV, which is 1.9dBm, and when voltage value is 8mV, which is 4.1dBm, for another example, when voltage value is 20mV
When, which is 10.2dBm.
It should be understood that the embodiment of the present invention is only illustrated technical solution of the present invention by taking table 2 as an example, but the present invention is simultaneously
It is without being limited thereto, for example, the step-length can be 2,10 class values of storage etc. coexist.
Optionally, which further includes optical module, and the output end of the optical module is connected with the input terminal of the VOA, the optical mode
Block is used to provide the optical signal for the VOA.
Specifically, which is electric light converter, and it is constant that the optical signal of optical module output, which can be performance number,
Optical signal, is also possible to the optical signal of performance number variation, and the present invention does not limit, it should be appreciated that in the optical signal of optical module output
Under scene for performance number variation, controller storage is the corresponding relationship controlled between the value and pad value of signal.
Preferably, controller storage is corresponding relationship between DA value and pad value by hexadecimal representation.
Specifically, the attenuation range of VOA is 0dBm~10dBm, and the range of the D/A converter on the printed circuit board is 0x0
~0xFF, wherein the range of the DA is greater than the corresponding DA range of set value of attenuation range of the VOA, and controller can turn in DA
It is that 0x4 is traversed with step-length, when DA setting value value is 0x14, which reaches within the scope of parallel operation since 0x0
The maximum attenuation value 10dBm for having arrived the VOA, then during traversal, record respectively each DA value and with each pad value,
In this way, the mapping table of available DA value-pad value is as shown in table 3.
Table 3
| DA value | Pad value (dBm) |
| 0x04 | 1.9 |
| 0x08 | 4.1 |
| 0x0C | 5.7 |
| 0x10 | 8.3 |
| 0x14 | 10.2 |
As shown in Table 3, when DA value is 0x04, which is 1.9dBm, and when DA value is 0x08, which is
4.1dBm.For another example, when DA value is 0x14, which is 10.2dBm.
It should be understood that the embodiment of the present invention is only illustrated technical solution of the present invention by taking table 2 as an example, but the present invention is simultaneously
It is without being limited thereto, for example, the step-length can be 0x2,10 class values of storage etc. coexist.
Optionally, which further includes memory, which is specifically used for: indicating that the memory stores first parameter
The corresponding relationship of value and the value of the first control signal.
Optionally, the corresponding relationship of the value of first parameter value and the first control signal is the first table in mapping table
, which includes the value of first parameter value and the first control signal；The controller is also used to by the mapping
In table search with the matched list item of the first parameter value determine first list item be with the matched list item of the first parameter value, from this
First parameter value is obtained in first list item, and third is generated according to first parameter value and controls signal, and sending to the VOA should
Third controls signal, and the value which controls signal is equal to the value of the first control signal；The VOA is also used to through the VOA's
Input terminal receives third optical signal, carries out attenuation processing to the third optical signal under the control of third control signal to raw
Optical signal at third through decaying, and optical signal of the third through decaying is exported by the output end of the VOA.
Specifically, controller can be searched and the matched list item of the first parameter value in the mapping table of such as table 1 to table 3.
For example, user needs to attenuated optical signal 4.1dBm, then controller can be searched and the matched table of 4.1dBm in table 2 or table 3
, if the first list item to the 5th list item, controller can determine that the second list item is to row in table 2 or table 3 from top to bottom respectively
With the matched list item of 4.1dBm, and then controller can be determining with the matched control of 4.1dBm in the second list item according to the 4.1dBm
The value of signal processed is that 8mV or DA value is 0x08, and exports the optical signal through decaying according to the 8mV or 0x08 control VOA.
Optionally, which is also used to send second control signal to the VOA；The VOA is also used to through the defeated of the VOA
Enter end and receive the second optical signal, attenuation processing is carried out to generate to second optical signal under the control of the second control signal
Second optical signal through decaying, and second optical signal through decaying is exported by the output end of the VOA；The light power meter is also
For receiving second optical signal through decaying, the performance number of second optical signal through decaying is determined, and to the controller
Send the performance number of second optical signal through decaying；The controller is also used to save the second parameter value and the second control signal
Value corresponding relationship, which is the functional value of the performance number of second optical signal through decaying, this first control
The value of signal and the value of the second control signal are unequal, and first parameter value and second parameter value are unequal；The controller
It is also used to the value according to the first control signal, first parameter value, the value of the second control signal and second parameter value,
Determine linear function y=f (x), the value of the first control signal is equal to f (first parameter value), the value of the second control signal
Equal to f (second parameter value)；The controller is also used to obtain third parameter value, according to the third parameter value and the linear letter
Number determines the value of third control signal, and sends third control signal to the VOA, and the value which controls signal is equal to f
(the third parameter value)；The VOA is also used to receive third optical signal by the input terminal of the VOA, in third control signal
Attenuation processing is carried out to generate optical signal of the third through decaying to the third optical signal under control, and passes through the defeated of the VOA
Outlet exports optical signal of the third through decaying, which is the function of the performance number of optical signal of the third through decaying
Value, the third parameter value and first parameter value are unequal, and the third parameter value and second parameter value are unequal, the third control
The value of signal processed and the value of the first control signal are unequal, the third control signal value and the second control signal value not
It is equal.
Specifically, controller can be according to first list item of the table 1 into table 3 in any mapping table to pair in the 5th list item
It should be related to that carrying out linear fit obtains y=f (x), wherein y is the value for controlling signal, and x is parameter value.It is exemplified by Table 1
Bright, user carries out attenuation processing to the optical signal that the received performance number of VOA input terminal is 20dBm, and needing to obtain optical power value is
The optical signal through decaying of 13dBm, controller can determine the line according to 5 class values of first list item into the 5th list item in table 1
Property function f, it is assumed that y=36.4-1.8x brings the optical power value 13dBm i.e. x=13 that user needs in party's formula into,
Can acquire the value that y value controls signal, controller further according to the control signal control VOA obtained by party's formula obtain through
The optical signal of decaying.
It should be understood that the function in the embodiment of the present invention can be linear relationship, be also possible to non-linear relation, in order to describe
Convenient, the present invention is illustrated with linear relationship, but the present invention does not limit this.
The system 1000 that the embodiment of the invention also provides a kind of for being handled optical signal.The system 1000 includes
Device and light power meter according to an embodiment of the present invention for being handled optical signal, the input terminal and peace of the light power meter
The output end of the VOA on the printed circuit board is connected, and the output end of the light power meter and is mounted on the printed circuit board
On controller input terminal be connected.
Optionally, in system provided in an embodiment of the present invention 1000 as shown in Figure 3 in the specific implementation, the system 1000
Further include PC, the output end of the light power meter be connected with the input terminal of the controller specifically include the light power meter output end it is logical
The PC is crossed to be connected with the input terminal of the controller.The input terminal of the PC is connected with the output end of the light power meter, the output of the PC
End is connected with the input terminal of the controller.
Specifically, PC controls CPU by the way of traversal generates N number of DA value, which is sent to DA and turned by CPU
N number of DA value is converted into analog signal and controls the optical signal progress that the VOA exports optical module respectively by parallel operation, the D/A converter
The output end of attenuation processing and the VOA export N number of optical signal through decaying, and then PC machine reads the N obtained on light power meter
The performance number of a optical signal through decaying, and the CPU that is sent to of corresponding N number of optical signal through decaying, CPU are indicated into memory
Store the corresponding relationship of this of N DA value and the performance number of N number of optical signal through decaying.
It should be understood that " 0x " indicates hexadecimal in application documents.
Therefore, the system for being handled optical signal of the embodiment of the present invention passes through the first parameter value of storage and the
The corresponding relationship of the value of one control signal, controller control the VOA according to the control signal that the corresponding relationship determines, can be effective
Improve the precision of the optical signal through decaying of VOA output in ground.
It is extended to obtain on the basis of the device 100 that system 1000 shown in Fig. 3 can be shown in Fig. 2.Specifically,
System 1000 includes the device 100 and light power meter 200 for being handled optical signal in the embodiment of the present invention, and is filled
It is identical as above-mentioned technical proposal to set the operations and functions that the modules in 100 are realized, for sake of simplicity, details are not described herein.
As shown in figure 4, the method 300 that the embodiment of the invention also provides a kind of for being handled optical signal.The party
Method 300 can be applied in system 1000 shown in Fig. 3.Specifically, system 1000 shown in Fig. 3 can be used for executing Fig. 4 institute
The method shown.Referring to fig. 4, this method 300 includes:
S310, controller send first control signal to the VOA；
S320, VOA receive the first optical signal by the input terminal of VOA, under the control of the first control signal to this
One optical signal carries out attenuation processing to generate the first optical signal through decaying, and by the output end of the VOA export this
Once the optical signal of decaying；
S330, light power meter receive first optical signal through decaying, determine the power of first optical signal through decaying
It is worth, and sends the performance number of first optical signal through decaying to the controller；
S340, controller save the corresponding relationship of the first parameter value and the value of the first control signal, first parameter value
It is the functional value of the performance number of first optical signal through decaying.
Therefore, the method for being handled optical signal of the embodiment of the present invention passes through the first parameter value of storage and the
The corresponding relationship of the value of one control signal, in use in order to the VOA, the control that controller is determined according to the corresponding relationship
Signal processed controls the VOA, helps to improve the precision of the optical signal through decaying of VOA output.
Fig. 5 shows another device 500 according to an embodiment of the present invention.The device 500 includes: memory 510, processor
520,550 bus system 560 of transceiver 530, adjustable optical attenuator VOA540 and light power meter.Wherein, the memory, the processing
Device, the transceiver, adjustable optical attenuator VOA and the light power meter are connected by the bus system, and the memory is for storing
Instruction, the processor are used to execute the instruction of memory storage, receive signal or transmission signal to control transceiver, and work as
When the processor executes the instruction of memory storage, which is used for: sending first control signal to VOA；The VOA is used for
The first optical signal is received by the input terminal of the VOA, is declined under the control of the first control signal to first optical signal
Subtract processing to generate the first optical signal through decaying, and first light letter through decaying is exported by the output end of the VOA
Number；The light power meter is used to receive first optical signal through decaying, and determines the performance number of first optical signal through decaying, with
And the performance number of first optical signal through decaying is sent to the controller；The processor is also used to receive in the first control letter
Number control under to first optical signal carry out attenuation processing to generate the first optical signal through decaying, and pass through the VOA
Output end export first optical signal through decaying；Save the first parameter value pass corresponding with the value of the first control signal
System, which is the functional value of the performance number of first optical signal through decaying.
Therefore, the device provided in an embodiment of the present invention for being handled optical signal can be improved the warp of VOA output
The optical power precision of decaying.
It should be understood that in embodiments of the present invention, which can be CPU, which can also be other
General processor, digital signal processor (DSP), specific integrated circuit (ASIC), FPGA or other programmable logic device,
Discrete gate or transistor logic, discrete hardware components etc..General processor can be microprocessor.
The memory 510 may include read-only memory and random access memory, and to processor 520 provide instruction and
Data.The a part of of memory 510 can also include nonvolatile RAM.For example, memory 510 can also be deposited
Store up the information of device type.
The bus system 560 can also include power bus, control bus and status signal in addition to including data/address bus
Bus etc..But for the sake of clear explanation, various buses are all designated as bus system 560 in figure.
During realization, each step of the above method 300 can pass through the integration logic electricity of the hardware in processor 520
The instruction of road or software form is completed.The step of method in conjunction with disclosed in the embodiment of the present invention, can be embodied directly in hardware
Processor executes completion, or in processor hardware and software module combination execute completion.Software module can be located at
Machine memory, flash memory, read-only memory, programmable read only memory or electrically erasable programmable memory, register etc. are originally
In the storage medium of field maturation.The storage medium is located at memory 510, and processor 520 reads the information in memory 510,
The step of completing the above method 300 in conjunction with its hardware.To avoid repeating, it is not detailed herein.
It should be understood that in embodiments of the present invention, device 500 according to an embodiment of the present invention can be used to implement shown in Fig. 3
System 1000.For sake of simplicity, details are not described herein.
It should be understood that in embodiments of the present invention, " B corresponding with A " indicates that B is associated with A, B can be determined according to A.But
It should also be understood that determining that B is not meant to determine B only according to A according to A, B can also be determined according to A and/or other information.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware
With the interchangeability of software, each exemplary composition and step are generally described according to function in the above description.This
A little functions are implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Specially
Industry technical staff can use different methods to achieve the described function each specific application, but this realization is not
It is considered as beyond the scope of this invention.
It is apparent to those skilled in the art that for convenience of description and succinctly, foregoing description is
The specific work process of system, device and unit, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit is drawn
Point, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can
To combine or be desirably integrated into another system, or some features can be ignored or not executed.In addition, shown or discussed
Mutual coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING of device or unit or
Communication connection is also possible to electricity, mechanical or other form connections.
Unit may or may not be physically separated as illustrated by the separation member for this, show as unit
Component may or may not be physical unit, it can it is in one place, or may be distributed over multiple nets
On network unit.Some or all of unit therein can be selected to realize the embodiment of the present invention according to the actual needs
Purpose.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, is also possible to two or more units and is integrated in one unit.It is above-mentioned integrated
Unit both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and when sold or used as an independent product,
It can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention substantially or
Person says that all or part of the part that contributes to existing technology or the technical solution can body in the form of software products
Reveal and, which is stored in a storage medium, including some instructions are with so that a computer is set
Standby (can be personal computer, server or the network equipment etc.) execute each embodiment this method of the present invention whole or
Part steps.And storage medium above-mentioned include: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory),
Random access memory (RAM, Random Access Memory), magnetic or disk etc. be various to can store program code
Medium.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or replace
It changes.
Claims (7)
1. a kind of device for being handled optical signal, which is characterized in that described device includes printed circuit board, controller
And adjustable optical attenuator VOA, the controller and the VOA are mounted on the printed circuit board, the output of the VOA
It holds and is connected with the input terminal for the light power meter being not installed on the printed circuit board, the output end of the light power meter and institute
The input terminal for stating controller is connected, and the output end of the controller is connected with the input terminal of the VOA；
The controller is used to send first control signal to the VOA；
The VOA is used to receive the first optical signal by the input terminal of the VOA, right under the control of the first control signal
First optical signal carries out attenuation processing to generate the first optical signal through decaying, and the output end by the VOA
Export the described first optical signal through decaying；
The light power meter determines the function of the described first optical signal through decaying for receiving the described first optical signal through decaying
Rate value, and send to the controller performance number of the described first optical signal through decaying；
The controller is also used to save the corresponding relationship of the value of the first parameter value and the first control signal, first ginseng
Numerical value is the functional value of the performance number of the described first optical signal through decaying；
The controller is also used to the corresponding relationship control institute of the value according to first parameter value Yu the first control signal
State VOA.
2. the apparatus according to claim 1, which is characterized in that first parameter value is equal to the described first light through decaying
The performance number of signal, or the performance number of the performance number and the described first optical signal through decaying equal to first optical signal
Difference.
3. device according to claim 1 or 2, which is characterized in that described device further includes optical module, the optical module
Output end is connected with the input terminal of the VOA, and the optical module is used to provide first optical signal for the VOA.
4. device according to claim 1 or 2, which is characterized in that described device further includes digital-to-analogue D/A converter, the DA
Converter is used for:
The value of the first control signal is converted into the first analog signal；
The VOA be specifically used under the control of first analog signal to first optical signal carry out attenuation processing to
Generate the described first optical signal through decaying.
5. device according to claim 1 or 2, which is characterized in that described device further includes memory, the control utensil
Body is used for:
Indicate that the memory stores the corresponding relationship of the value of first parameter value and the first control signal.
6. device according to claim 1 or 2, which is characterized in that first parameter value and the first control signal
The corresponding relationship of value be the first list item in mapping table, first list item includes first parameter value and first control
The value of signal processed；
Described in the controller is also used to determine by the lookup in the mapping table and the matched list item of first parameter value
First list item be with the matched list item of the first parameter value, first parameter value is obtained from first list item, according to
First parameter value generates third and controls signal, and sends the third to the VOA and control signal, the third control
The value of signal is equal to the value of the first control signal；
The VOA is also used to receive third optical signal by the input terminal of the VOA, under the control of third control signal
Attenuation processing is carried out to generate optical signal of the third through decaying, and the output by the VOA to the third optical signal
End exports the optical signal of the third through decaying.
7. device according to claim 1 or 2, which is characterized in that
The controller is also used to send second control signal to the VOA；
The VOA is also used to receive the second optical signal by the input terminal of the VOA, under the control of the second control signal
Attenuation processing is carried out to generate the second optical signal through decaying, and the output by the VOA to second optical signal
The described second optical signal through decaying of end output；
The light power meter is also used to receive the described second optical signal through decaying, and determines the described second optical signal through decaying
Performance number, and send to the controller performance number of the described second optical signal through decaying；
The controller is also used to save the corresponding relationship of the value of the second parameter value and the second control signal, second ginseng
Numerical value is the functional value of the performance number of the described second optical signal through decaying, the value of the first control signal and second control
The value of signal processed is unequal, and first parameter value and second parameter value are unequal；
The controller is also used to the value according to the first control signal, first parameter value, the second control signal
Value and second parameter value, determine linear function y=f (x), the value of the first control signal is equal to f (described first
Parameter value), the value of the second control signal is equal to f (second parameter value)；
The controller is also used to obtain third parameter value, according to the third parameter value and the linear function, determines third
The value of signal is controlled, and sends the third to the VOA and controls signal, it is (described that the value of the third control signal is equal to f
Third parameter value)；
The VOA is also used to receive third optical signal by the input terminal of the VOA, under the control of third control signal
Attenuation processing is carried out to generate optical signal of the third through decaying, and the output by the VOA to the third optical signal
End exports the optical signal of the third through decaying, and the third parameter value is the performance number of optical signal of the third through decaying
Functional value, the third parameter value and first parameter value are unequal, and the third parameter value and second parameter value are not
Equal, the value of the value and the first control signal of third control signal is unequal, the value of the third control signal and
The value of the second control signal is unequal.
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| CN111814105B (en) | 2020-06-24 | 2021-06-11 | 武汉光迅科技股份有限公司 | Calibration method, device and equipment of coherent optical module and computer readable storage medium |
| CN116488730A (en) * | 2023-06-25 | 2023-07-25 | 广东电网有限责任公司广州供电局 | Optical fiber transmission system for controlling optical signal power |
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