CN206364804U - A kind of colourless dense wave division multipurpose access network optical line terminal optical module - Google Patents
A kind of colourless dense wave division multipurpose access network optical line terminal optical module Download PDFInfo
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- CN206364804U CN206364804U CN201621352337.XU CN201621352337U CN206364804U CN 206364804 U CN206364804 U CN 206364804U CN 201621352337 U CN201621352337 U CN 201621352337U CN 206364804 U CN206364804 U CN 206364804U
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Abstract
The utility model discloses a kind of colourless dense wave division multipurpose access network optical line terminal optical module, eight optical modules that four-way transmitting is received with four-way are internally integrated including QSFP+ or CFP4 packing forms and single optical module using miniaturization, described optical module includes MCU Main Processing Unit, and down going channel laser array unit, down going channel laser array driver element, data feedback channel photodetector array unit, data feedback channel limiting amplifier unit and the ribbon-unit being connected with MCU Main Processing Unit.The colourless dense wave division multipurpose access network optical line terminal optical module belongs to new miniaturization WDM OLT optical modules, module packing forms are using QSFP+ the or CFP4 packing forms minimized, only a kind of module, single optical module is internally integrated 4 channel emissions and 4 channel receptions, wherein each passage can configure 8 kinds of wavelength, the covering of 32 channels is realized by 8 optical modules, realize module miniaturization and standard packaging, simply, easy care, low cost.
Description
Technical field
The utility model is related to a kind of technical field of optical fiber communication, more particularly to a kind of whole applied to WDM PON optical links
Hold the colorless optical module method of optical module.
Background technology
At present, in WDM PON systems, DWDM wavelength will be used between OLT to ONU, the point-to-point biography of multidiameter delay is realized
It is defeated.For traditional WDM PON OLT optical modules, its launch wavelength is by by the way of fixed wave length, if to realize all-wave
The covering of section, will so need 32 kinds of different lasers, if it is considered that 4 passages integrated CFP4 encapsulation or QSFP+ encapsulation,
At least need 8 kinds of different optical modules, the OLT of fixed wave length will cause that chip of laser species is various, and type of modules is various, fortune
Tie up cost high.
The content of the invention
The purpose of this utility model is that there is provided a kind of colourless dense wave division multipurpose in order to overcome the shortcoming of above-mentioned prior art
Access network optical line terminal optical module, the colourless dense wave division multipurpose access network optical line terminal optical module belongs to new small-sized
Change WDM OLT optical modules, module packing forms can be using QSFP+ the or CFP4 packing forms minimized, and type of modules is few,
A kind of module, 8 modules can cover the channel of all band 32, and O＆M is simple.Single optical module be internally integrated 4 channel emissions with
4 channel receptions, wherein each passage can configure 8 kinds of wavelength, the covering of 32 channels are realized by 8 optical modules, mould is realized
Block is minimized and standard packaging, simply, easy care, low cost.
The utility model solves the technical scheme that its technical problem used：A kind of colourless dense wave division multipurpose access network
Optical line terminal optical module, including using miniaturization QSFP+ or CFP4 packing forms and single optical module is internally integrated four
Eight optical modules that channel emission and four-way are received, described optical module includes MCU Main Processing Unit, and with MCU master control lists
Down going channel laser array unit, down going channel laser array driver element, the data feedback channel photodetector of member connection
Array element, data feedback channel limiting amplifier unit and ribbon-unit.
Further, described down going channel laser array unit is used with temperature controlled tunable laser, can
Tuned laser includes chip of laser and circuit control chip, and the temperature control circuit of tunable laser is by thermistor and refrigeration
Device is constituted, and thermistor is close to chip of laser, and circuit control chip is connected with refrigerator.Using the road laser arrays of 8 X 4
To realize that 32 passages are exported, output wavelength meets ITU standard 100GHz channel spacings.It is main in the encapsulation of 4 road laser arrays
Need to solve the problems, such as each accurate control problem of road wavelength and laser array fiber coupling.Tunable laser can meet ripple
Long control standard, can realize the consecutive variations of output wavelength by being adjusted while DBR and Phase.Each chip of laser can
The wave-length coverage of tuning is 8 wavelength, because ambient temperature change and device operational heat itself influence whether that device works
Stability, the temperature control circuit that thermistor and refrigerator are constituted therefore, in encapsulation must be used to ensure tunable laser
It is operated at more stable temperature and state.Thermistor is close to chip of laser placement, real-time detection laser chip
Temperature, then feeds back to for circuit control chip, and driving refrigerator work adjusts tunable laser temperature, is allowed to be maintained at
In one constant scope.For accurate control and stable tunable laser wavelength, the side that tunable EML add TEC is proposed
Case, the mode adjusted by electricity is accurately transferred to the wavelength of laser on grid, meanwhile, carry out wavelength stabilization by TEC.
Further, described down going channel laser array driver element uses High-performance lasers driver.High-performance
Laser driver completes the electric light conversion of downlink data, and the data message of central office is sent into user terminal.By center office system
String and converter（SerDes）The electric signal of downlink is produced, the transmitting terminal data-out pin TX_ of optical module is conveyed to
Data, by laser driver inside optical module（Driver）Drive laser, system MAC（Physical layer Media access contorl device）
Opening and shutting off for optical module laser is controlled by TX_Dis pins.
Further, described data feedback channel photodetector array unit uses the form of optical receiver array, and light connects
The photo detector chip of whole C-band can be covered including that can detect wave-length coverage by receiving device, and the fiber coupling of array package is equally adopted
The mode coupled with fiber array.
Further, described data feedback channel limiting amplifier unit uses limiting amplifier.By local side transmission Lai C ripples
Section（1534~1560）Nm optical signal, by the conversion of APD detectors, converts optical signal into electric signal, and export to rear class
Limiting amplifier be amplified, exported by the data receiver output pin pin of optical module and given SerDes chips, and alerted receiving
Signal RX_LOS signals are conveyed to MAC, are diagnosed for system.
Further, described ribbon-unit includes the fiber array of the highly dense optical module formation of 10Gbps numeric types, light
Fibre array includes four tunnels transmitting coupling optical fiber and four tunnels receive coupling optical fiber.
Further, the electric light conversion of described four-way transmitting uses laser array mode, passes through fiber array
Mode, which is realized, to be directly coupled out；Four-way, which is received, uses avalanche diode detector array mode, passes through fiber array mode
It is directly coupled out.
Further, four described tunnels transmitting coupling optical fiber and four tunnels receive coupling optical fiber coupled in common into same MT
Connector female, is attached with MT connector males by the MT types joints of optical fibre, realizes the coupling of light path.
MCU Main Processing Unit, as the core controller inside optical module, is responsible for control and the monitoring function of optical module.Light
The simulation monitoring amount of module includes but is not limited to：Module operating voltage is monitored, the monitoring of module operating temperature, and luminous power is launched on each road
Launch bias current, each road received optical power in monitoring, each road.Monitor state amount includes but is not limited to：Transmitting terminal Failure Alarm, connects
Receive loss of signal alarm, working limit overload alarm and warning etc..System can have access to the register of optical module by I2C,
Obtain the working condition of optical module.When optical module is in abnormal conditions, alarm bit will be put in corresponding register, system passes through
These abnormal alarm conditions are obtained, the working condition of adjustment optical module, necessary number is provided for the intelligent management of system in real time
According to.
In summary, colourless dense wave division multipurpose access network optical line terminal optical module of the present utility model belongs to new
WDM OLT optical modules are minimized, module packing forms can be using QSFP+ the or CFP4 packing forms minimized, module kind
Class is few, a kind of module, and 8 modules can cover the channel of all band 32, and O＆M is simple.Single optical module is internally integrated 4 passages
Transmitting and 4 channel receptions, wherein each passage can configure 8 kinds of wavelength, the covering of 32 channels is realized by 8 optical modules, real
Show module miniaturization and standard packaging, simply, easy care, low cost.
Brief description of the drawings
Fig. 1 is a kind of colourless dense wave division multipurpose access network optical line terminal optical module of the utility model embodiment 1
Theory diagram；
Fig. 2 is a kind of colourless dense wave division multipurpose access network optical line terminal optical module of the utility model embodiment 1
Connect block diagram；
Fig. 3 is the structural representation of tunable laser；
Fig. 4 is the schematic block circuit diagram of down going channel laser array driver element.
Embodiment
Embodiment 1
A kind of colourless dense wave division multipurpose access network optical line terminal optical module described by the present embodiment 1, such as Fig. 1 and figure
Shown in 2, including QSFP+ the or CFP4 packing forms and single optical module of miniaturization are used to be internally integrated four-way transmitting and four
Eight optical modules of channel reception, described optical module includes MCU Main Processing Unit 1, and be connected with MCU Main Processing Unit it is descending
Multichannel laser device array element 2, down going channel laser array driver element 3, data feedback channel photodetector array unit 4,
Data feedback channel limiting amplifier unit and 5 ribbon-units 6.
The down going channel laser array unit is used with temperature controlled tunable laser, as shown in figure 3, tunable
Laser includes chip of laser 7 and circuit control chip, and the temperature control circuit of tunable laser is by thermistor and refrigerator 8
Composition, thermistor is close to chip of laser, and circuit control chip is connected with refrigerator.Using the road laser arrays of 8 X 4 come
Realize that 32 passages are exported, output wavelength meets ITU standard 100GHz channel spacings.It is main in the encapsulation of 4 road laser arrays
Need to solve the problems, such as each accurate control problem of road wavelength and laser array fiber coupling.Tunable laser can meet wavelength
Control standard, can realize the consecutive variations of output wavelength by being adjusted while DBR and Phase.Each chip of laser is adjustable
Humorous wave-length coverage is 8 wavelength, because ambient temperature changes and device operational heat itself influences whether device work
Stability, therefore, in encapsulation must use the temperature control circuit that thermistor and refrigerator are constituted to ensure tunable laser work
Make at more stable temperature and state.Thermistor is close to chip of laser placement, the temperature of real-time detection laser chip
Degree, then feeds back to for circuit control chip, and driving refrigerator work adjusts tunable laser temperature, is allowed to be maintained at one
In individual constant scope.For accurate control and stable tunable laser wavelength, the scheme that tunable EML add TEC is proposed,
The mode adjusted by electricity is accurately transferred to the wavelength of laser on grid, meanwhile, carry out wavelength stabilization by TEC.
The wavelength planning of optical module is as shown in table 1, wherein each optical module is made up of 4 passages, can for channel1
To cover channel 1 ~ 8；For channel 2, channel 9 ~ 16 can be covered；For channel 3, channel 17 ~ 24 can be covered；
For channel 4, channel 25 ~ 32 can be covered；
In order to reduce the overall power of optical module, optical module is in configuration, and channel 1 and channel 3 are according to ascending order
Arrangement, channel 2 and channel 4 are arranged according to descending, such as, for set optical module, if being operated in first group of ripple
, it is necessary to which channel1 is configured into channel 1 when long, channel2 is configured to channel 16, channel3 is configured to channel 17,
Channel4 is configured to channel 32, when the module is operated in any group of wavelength, its power consumption is not too big relatively.
Table 1：Downstream wavelength is disposed
The down going channel laser array driver element uses High-performance lasers driver.As shown in figure 4, High-performance lasers
Driver completes the electric light conversion of downlink data, and the data message of central office is sent into user terminal.By the string of center office system
And converter（SerDes）The electric signal of downlink is produced, the transmitting terminal data-out pin TX_Data of optical module is conveyed to,
By laser driver inside optical module（Driver）Drive laser, system MAC（Physical layer Media access contorl device）Pass through
TX_Dis pins control opening and shutting off for optical module laser.
The data feedback channel photodetector array unit uses the form of optical receiver array, and optical receiver includes detecting
Wave-length coverage can cover the photo detector chip of whole C-band, and the fiber coupling of array package is equally coupled using fiber array
Mode.
The data feedback channel limiting amplifier unit uses limiting amplifier.By local side transmission Lai C-band（1534~1560）
Nm optical signal, by the conversion of APD detectors, converts optical signal into electric signal, and export the limiting amplifier to rear class
It is amplified, is exported by the data receiver output pin pin of optical module and give SerDes chips, and alarm signal RX_LOS letters will be received
Number MAC is conveyed to, is diagnosed for system.
The ribbon-unit includes the fiber array of the highly dense optical module formation of 10Gbps numeric types, and fiber array includes four tunnels
Transmitting coupling optical fiber and four tunnels receive coupling optical fiber.
The electric light conversion of four-way transmitting uses laser array mode, and direct coupling is realized by way of fiber array
Close output；Four-way, which is received, uses avalanche diode detector array mode, is directly coupled out by fiber array mode.
Four tunnel transmitting coupling optical fiber and four tunnels receive coupling optical fiber coupled in common and enter same MT connectors female, lead to
Cross the MT types joints of optical fibre to be attached with MT connector males, realize the coupling of light path.
MCU Main Processing Unit, as the core controller inside optical module, is responsible for control and the monitoring function of optical module.Light
The simulation monitoring amount of module includes but is not limited to：Module operating voltage is monitored, the monitoring of module operating temperature, and luminous power is launched on each road
Launch bias current, each road received optical power in monitoring, each road.Monitor state amount includes but is not limited to：Transmitting terminal Failure Alarm, connects
Receive loss of signal alarm, working limit overload alarm and warning etc..System can have access to the register of optical module by I2C,
Obtain the working condition of optical module.When optical module is in abnormal conditions, alarm bit will be put in corresponding register, system passes through
These abnormal alarm conditions are obtained, the working condition of adjustment optical module, necessary number is provided for the intelligent management of system in real time
According to.
It is described above, only it is preferred embodiment of the present utility model, any not is made to structure of the present utility model
Formal limitation.It is every any simple modification made according to technical spirit of the present utility model to above example, equivalent
Change and modification, in the range of still falling within the technical solution of the utility model.
Claims (8)
1. a kind of colourless dense wave division multipurpose access network optical line terminal optical module, it is characterised in that including using miniaturization
QSFP+ or CFP4 packing forms and single optical module are internally integrated eight optical modules that four-way transmitting is received with four-way,
Described optical module include MCU Main Processing Unit, and be connected with MCU Main Processing Unit down going channel laser array unit, under
Row of channels laser array driver element, data feedback channel photodetector array unit, data feedback channel limiting amplifier unit and
Ribbon-unit.
2. a kind of colourless dense wave division multipurpose access network optical line terminal optical module according to claim 1, its feature exists
In described down going channel laser array unit is used with temperature controlled tunable laser, and tunable laser includes
Chip of laser and circuit control chip, the temperature control circuit of tunable laser are made up of thermistor and refrigerator, temperature-sensitive electricity
Chip of laser is close in resistance, and circuit control chip is connected with refrigerator.
3. a kind of colourless dense wave division multipurpose access network optical line terminal optical module according to claim 1, its feature exists
In described down going channel laser array driver element uses High-performance lasers driver.
4. a kind of colourless dense wave division multipurpose access network optical line terminal optical module according to claim 1, its feature exists
In described data feedback channel photodetector array unit uses the form of optical receiver array, and optical receiver includes detecting
Wave-length coverage can cover the photo detector chip of whole C-band.
5. a kind of colourless dense wave division multipurpose access network optical line terminal optical module according to claim 1, its feature exists
In described data feedback channel limiting amplifier unit uses limiting amplifier.
6. a kind of colourless dense wave division multipurpose access network optical line terminal optical module according to claim 1, its feature exists
In described ribbon-unit includes the fiber array of the highly dense optical module formation of 10Gbps numeric types, and fiber array includes four tunnels
Transmitting coupling optical fiber and four tunnels receive coupling optical fiber.
7. a kind of colourless dense wave division multipurpose access network optical line terminal optical module according to claim 6, its feature exists
In the electric light conversion of described four-way transmitting uses laser array mode, and direct coupling is realized by way of fiber array
Close output；Four-way, which is received, uses avalanche diode detector array mode, is directly coupled out by fiber array mode.
8. a kind of colourless dense wave division multipurpose access network optical line terminal optical module according to claim 7, its feature exists
In described four tunnels transmitting coupling optical fiber and four tunnels receive coupling optical fiber coupled in common and enter same MT connectors female, lead to
Cross the MT types joints of optical fibre to be attached with MT connector males, realize the coupling of light path.
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| CN201621352337.XU CN206364804U (en) | 2016-12-11 | 2016-12-11 | A kind of colourless dense wave division multipurpose access network optical line terminal optical module |
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| CN201621352337.XU CN206364804U (en) | 2016-12-11 | 2016-12-11 | A kind of colourless dense wave division multipurpose access network optical line terminal optical module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106506066A (en) * | 2016-12-11 | 2017-03-15 | 广东海信宽带科技有限公司 | A kind of colourless dense wave division multipurpose access network optical line terminal optical module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106506066A (en) * | 2016-12-11 | 2017-03-15 | 广东海信宽带科技有限公司 | A kind of colourless dense wave division multipurpose access network optical line terminal optical module |
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