CN107147002B - Frequency regulator and method when optical maser wavelength based on coupling crosstalk theory is adjustable and long - Google Patents
Frequency regulator and method when optical maser wavelength based on coupling crosstalk theory is adjustable and long Download PDFInfo
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- CN107147002B CN107147002B CN201710550797.6A CN201710550797A CN107147002B CN 107147002 B CN107147002 B CN 107147002B CN 201710550797 A CN201710550797 A CN 201710550797A CN 107147002 B CN107147002 B CN 107147002B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
- H01S3/1305—Feedback control systems
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Abstract
Frequency regulator and method when adjustable and long the present invention provides a kind of optical maser wavelength based on coupling crosstalk theory, comprising: communication modulation module obtains modulation laser for received original signal to be loaded into communication laser；Laser diverter module obtains the first modulation laser for shunting the modulation laser；Laser collaborates module, for collaborating the first modulation laser with reference laser, obtains a branch of interflow laser；Photodetector obtains for the interflow laser to be carried out photoelectric conversion and exports electric signal；Processor obtains according to the bit error rate for calculating the bit error rate according to original signal and electric signal and exports first control signal to communication modulation module, to adjust the wavelength of the communication laser.In addition, can compare electric signal and initial signal the present invention also provides a kind of method, the bit error rate obtained is very sensitive to laser wavelength shake, therefore can effectively improve the control precision to telecommunication laser wavelength.
Description
Technical field
The present invention relates to optical network communication field of lasers, more particularly to the optical maser wavelength based on coupling crosstalk theory is adjustable
And frequency regulator and method when long.
Background technique
For a long time, in optical communication field, the stabilization of laser wavelength is a most basic element, it is related to rear end
The setting of all device parameters of optical-fiber network, performance etc. but will have an impact entire optical communication link signal.Therefore very much
The method of frequency stabilization is applied in practical devices, such as outer cell method frequency stabilization, mode locking method frequency stabilization.And now the adjustable frequency stabilization of laser wavelength
The requirement of higher precision is proposed in different fields.
Summary of the invention
(1) technical problems to be solved
Frequency regulator and side when adjustable and long the purpose of the present invention is to provide the optical maser wavelength based on coupling crosstalk theory
Method, to solve at least one above-mentioned technical problem.
(2) technical solution
An aspect of of the present present invention, provide a kind of optical maser wavelength based on coupling crosstalk theory it is adjustable and long when frequency stabilization fill
It sets, comprising:
Communication modulation module obtains modulation laser for received original signal to be loaded into communication laser；
Laser diverter module obtains the first modulation laser for shunting the modulation laser；
Laser collaborates module, for collaborating the first modulation laser with reference laser, obtains a branch of interflow and swashs
Light；
Photodetector obtains for the interflow laser to be carried out photoelectric conversion and exports electric signal；
Processor obtains according to the bit error rate for calculating the bit error rate according to original signal and electric signal and exports first
Signal is controlled to communication modulation module, to adjust the wavelength of the communication laser.
Optionally, the communication modulation module includes:
Telecommunication laser, for emitting communication laser；
Modulator obtains modulation laser for the original signal to be loaded into the communication laser.
Optionally, the laser diverter module is by one or more ginsengs in energy, wavelength, the angle of divergence and laser mould field
The allocation proportion or the method for salary distribution of number setting modulation laser, to be shunted.
Optionally, the modulation laser also obtains exporting to outside and modulates laser for the second of normal communication by shunting.
Optionally, described device further include:
Reference laser diode, for emitting reference laser；
First driving circuit, the second control signal for being exported according to processor, drives the telecommunication laser；
Second driving circuit, the third for being exported according to processor control signal, drive the reference laser diode.
Optionally, the reference laser diode is single laser, or the array laser for multiple laser constitutions；And
The central wavelength of the central wavelength adjustable extent covering telecommunication laser of the reference laser diode, reference light lasers A tunable wavelength essence
Spend range≤0.01nm.
Optionally, responsiveness≤- 30dbm of the photodetector.
Based on the same inventive concept, adjustable the present invention also provides a kind of optical maser wavelength based on coupling crosstalk theory and long
When frequency stabilization method, comprising steps of
By original signal load on communication laser, modulation laser is obtained；
Modulation laser is shunted, the first modulation laser is obtained；
The first modulation laser is collaborated with reference laser, obtains interflow laser, and carry out to the interflow laser
Photoelectric conversion obtains electric signal；
According to the electric signal with the original signal, the bit error rate is calculated, the communication laser is adjusted according to the bit error rate
Wavelength.
Optionally, if bit error rate < 10-2, then the wavelength of the communication laser is adjusted according to the bit error rate, until the mistake
Code rate >=10-2。
Optionally, laser is modulated according to one or more parameter settings in energy, wavelength, the angle of divergence and laser mould field
Allocation proportion or the method for salary distribution to adjustment laser, to be shunted.
(3) beneficial effect
The present invention compared to the prior art, has the advantage that
1, frequency regulator and its method are based on coupling crosstalk theory when optical maser wavelength of the invention is adjustable and long, and photoelectricity is visited
It surveys the initial signal that the electric signal that device obtains is issued with signal source to compare, the bit error rate obtained shakes laser wavelength non-
It is often sensitive, therefore the control precision to telecommunication laser wavelength can be effectively improved.
2, the device of the invention and method keep it identical as the wavelength of reference laser by adjusting the wavelength of communication laser,
To be suitble to adaptive space flight, underwater field but also frequency stabilization when the communication laser can be long, enhances its stability.
3, the device of the invention eliminates the expensive equipments such as frequency spectrograph, spectrometer, reduces equipment cost；The present invention simultaneously
Simultaneously feedback control can be made decisions to communication laser wavelength by processor, unnecessary optical device be saved, to system
Stability further strengthens, and military project grade device can be selected in all devices in device, improves Radiation hardness.
4, the reference laser in the device of the invention is tunable laser, can meet different user, different application scene
Demand；And reference laser diode can be made into the module of very little, device compact volume and convenience.
Detailed description of the invention
Fig. 1 is the structure of frequency regulator when the optical maser wavelength based on coupling crosstalk theory of the embodiment of the present invention is adjustable and long
Schematic diagram；
Fig. 2 is that the optical maser wavelength based on coupling crosstalk theory of one specific embodiment of the embodiment of the present invention is steady when adjustable and long
The structural schematic diagram of frequency device；
The step of Fig. 3 is frequency-stabilizing method when the optical maser wavelength based on coupling crosstalk theory of the embodiment of the present invention is adjustable and long
Schematic diagram.
Specific embodiment
Based on coupling crosstalk theory, it is known that when two-laser wavelength difference is larger, the bit error rate of telecommunication laser is reduced；
When two-laser wavelength is close, the bit error rate of telecommunication laser is increased, and when completely the same, the bit error rate is interrupted.Based on the reason
By frequency regulator and method when adjustable and long the present invention provides the optical maser wavelength based on coupling crosstalk theory, by photodetection
The initial signal that the electric signal that device obtains is issued with signal source compares, and the bit error rate obtained shakes very laser wavelength
Sensitivity, therefore the control precision to telecommunication laser wavelength can be effectively improved.Compared to traditional frequency stabilized carbon dioxide laser, this hair
It is bright to save unnecessary optical device, stability, Radiation hardness are further strengthened, and is more applicable for adaptive
The fields such as space flight, underwater.
In the present specification, following various embodiments for describing disclosure principle only illustrate, should not be with any
Mode is construed to the range of limitation invention.Referring to attached drawing the comprehensive understanding described below that is used to help by claim and its equivalent
The exemplary embodiment for the disclosure that object limits.Described below includes a variety of details to help to understand, but these details are answered
Think to be only exemplary.Therefore, it will be appreciated by those of ordinary skill in the art that without departing substantially from the scope of the present disclosure and spirit
In the case where, embodiment described herein can be made various changes and modifications.In addition, for clarity and brevity,
The description of known function and structure is omitted.In addition, running through attached drawing, same reference numbers are used for identity function and operation.At this
In open, term " includes " and " containing " and its derivative mean including rather than limit.
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.
The one side of the embodiment of the present invention provide the optical maser wavelength based on coupling crosstalk theory it is adjustable and long when frequency stabilization fill
It sets and method, Fig. 1 is the knot of frequency regulator when the optical maser wavelength based on coupling crosstalk theory of the embodiment of the present invention is adjustable and long
Structure schematic diagram, as shown in Figure 1, the device includes: communication modulation module 1, laser diverter module 2, laser interflow module 3, photoelectricity
Detector 4 and processor 5.Wherein, communication modulation module 1 includes: telecommunication laser, for emitting communication laser；And modulation
Device obtains modulation laser for received original signal to be loaded into the communication laser.Laser diverter module 2 by energy,
The allocation proportion or the method for salary distribution of one or more parameter settings modulation laser in wavelength, the angle of divergence and laser mould field are right
Modulation laser is shunted, and the first modulation laser is obtained.Laser collaborates module 3, for modulating laser and reference for described first
Laser is collaborated, and a branch of interflow laser is obtained.Wherein, reference laser is generated by reference laser diode, generally single laser
Or the array laser for multiple laser constitutions, and its tunable wave length, the reference light laser in the embodiment of the present invention
Wavelengthtunable accuracy rating≤0.01nm.In addition, the adjustment in order to guarantee communication laser, the central wavelength of reference laser diode is adjustable
Range should cover the central wavelength of telecommunication laser.Meanwhile 4 Response to selection degree of photodetector≤- 30dbm photodetection
Device 4, so as to complete photoelectric conversion.Modulator 5 calculates the bit error rate according to original signal and electric signal, is obtained according to the bit error rate
To and export first control signal to communication modulation module 1, to adjust the wavelength of the communication laser.
To enable the device to more easily adjust the wavelength of communication laser, so that communication laser is in long Shi Wending
State, according to an embodiment of the present, the device further include: the first driving circuit 6 and the second driving circuit 7.First
Driving circuit 6, the second control signal for being exported according to processor 5, controls the telecommunication laser；Second driving circuit 7,
Third for being exported according to processor 5 controls signal, controls the reference laser diode.
Fig. 2 is that the optical maser wavelength based on coupling crosstalk theory of one specific embodiment of the embodiment of the present invention is steady when adjustable and long
The structural schematic diagram of frequency device, as shown in Fig. 2, the detailed process of its adjustment are as follows: processor 5 passes through its first output port out1
Control instruction is issued to the first driving circuit 6, and then controls the telecommunication laser 9 in communication modulation module 1；Outer signals source with
The original signal of generation is loaded into communication and is swashed by the modulator 10 of Laser Modulation module 1 by cable connection by modulator 10
In light；After laser diverter module 2, a part (the second modulation laser) enters the communication laser for being loaded with original signal
Normal communication is used for after the external optical-fiber network of rear end, a part (the first modulation laser) to enter laser and collaborates module 3；The processing
Device 5 issues control instruction by its second output terminal mouth out2, controls the second driving circuit 7, and then control reference laser diode 8；
The reference laser and the first modulation laser that reference laser diode 8 is issued are merged into a branch of interflow and swash after laser collaborates module 3
Light, and enter in photodetector 4；Photodetector 4 will collaborate laser and carry out photoelectric conversion, obtain electric signal, and output is extremely located
In the second input port in2 for managing device 5.In addition, signal source also exports the original signal of generation to the first input of processor 5
In the in1 of port, processor 5 compares the electric signal in the original signal of first input port in1 and the second input port in2
Compared with obtaining first control signal, and first control signal is exported from the first output port out1 of processor 5, thus structure
At feedback control loop.In the present embodiment, processor 5 calculates the bit error rate according to original signal and electric signal, if bit error rate <
10-2, then it represents that the wavelength of communication laser differs larger with the wavelength of reference laser, at this point, should be obtained simultaneously according to the bit error rate
First control signal is exported to communication modulation module 1, to adjust the wavelength of the communication laser, until the bit error rate >=10-2Or
The bit error rate is interrupted, at this point, the wavelength of communication laser and the wavelength of reference laser are essentially identical, the two is in aligned condition.In addition,
The suitable bit error rate can be selected to be calculated according to the different needs of the user, therefore, the wavelength of communication laser can also basis
Demand is adjusted.
It can be seen that the device of the invention can effectively realize the wavelength and 8 wavelength of reference laser diode of telecommunication laser 9
Alignment using feedback control loop and adjusts 8 wavelength of reference laser diode, can effectively realize the wavelength of telecommunication laser 9
The purpose of frequency stabilization when any adjustable and long.
Another aspect of the present invention, additionally provides a kind of method, and Fig. 3 is the embodiment of the present invention based on coupling crosstalk theory
Optical maser wavelength it is adjustable and long when frequency-stabilizing method step schematic diagram, as shown in figure 3, the method comprising the steps of:
S1, original signal is loaded on communication laser, obtains modulation laser；
S2, modulation laser is shunted, obtains the first modulation laser；At the same time, it is also obtained for normal communication
Second modulation laser；
S3, by it is described first modulation laser and reference laser collaborate, obtain collaborate laser, and to the interflow laser into
Row photoelectric conversion, obtains electric signal；
S4, according to the electric signal with the original signal, calculate the bit error rate and the communication then adjusted according to the bit error rate
The wavelength of laser；
In particular, the bit error rate is calculated according to original signal and electric signal, if bit error rate < 10-2, then it represents that communication laser
Wavelength differ larger with the wavelength of reference laser, at this point, should be obtained according to the bit error rate and export first control signal extremely
Communication modulation module, to adjust the wavelength of the communication laser, until the bit error rate >=10-2Or the bit error rate is interrupted, at this point, communication
The wavelength of laser and the wavelength of reference laser are essentially identical, and communication laser and reference laser are in aligned condition.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (10)
- Frequency regulator when 1. a kind of optical maser wavelength based on coupling crosstalk theory is adjustable and long, comprising:Communication modulation module obtains modulation laser for received original signal to be loaded into communication laser；Laser diverter module obtains the first modulation laser for shunting the modulation laser；Laser collaborates module, for collaborating the first modulation laser with reference laser, obtains a branch of interflow laser；Photodetector obtains for the interflow laser to be carried out photoelectric conversion and exports electric signal；Processor obtains according to the bit error rate for calculating the bit error rate according to original signal and electric signal and exports the first control Signal is to communication modulation module, to adjust the wavelength of the communication laser.
- 2. the apparatus according to claim 1, wherein the communication modulation module includes:Telecommunication laser, for emitting communication laser；Modulator obtains modulation laser for the original signal to be loaded into the communication laser.
- 3. the apparatus according to claim 1, wherein the laser diverter module presses energy, wavelength, the angle of divergence and laser The allocation proportion or the method for salary distribution of one or more parameter settings modulation laser in mould field, to be shunted.
- 4. the apparatus according to claim 1, wherein the modulation laser also obtains exporting to outside for just by shunting Second modulation laser of normal open letter.
- 5. the apparatus of claim 2, wherein described device further include:Reference laser diode, for emitting reference laser；First driving circuit, the second control signal for being exported according to processor, drives the telecommunication laser；Second driving circuit, the third for being exported according to processor control signal, drive the reference laser diode.
- 6. device according to claim 5, wherein the reference laser diode is single laser, or is multiple laser The array laser of device composition；And the central wavelength of the central wavelength adjustable extent covering telecommunication laser of the reference laser diode, Reference light lasers A tunable wavelength accuracy range≤0.01nm.
- 7. the apparatus according to claim 1, wherein responsiveness≤- 30dbm of the photodetector.
- 8. a kind of method of frequency stabilization when the optical maser wavelength based on coupling crosstalk theory is adjustable and long, comprising steps ofBy original signal load on communication laser, modulation laser is obtained；Modulation laser is shunted, the first modulation laser is obtained；The first modulation laser is collaborated with reference laser, obtains interflow laser, and photoelectricity is carried out to the interflow laser Conversion, obtains electric signal；According to the electric signal with the original signal, the bit error rate is calculated, the wave of the communication laser is adjusted according to the bit error rate It is long.
- 9. according to the method described in claim 8, wherein, if bit error rate < 10-2, then the communication is adjusted according to the bit error rate The wavelength of laser, until the bit error rate >=10-2。
- 10. according to the method described in claim 8, wherein, according to one in energy, wavelength, the angle of divergence and laser mould field Or multiple parameters set the allocation proportion for modulating laser or the method for salary distribution to adjustment laser, to be shunted.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710550797.6A CN107147002B (en) | 2017-07-07 | 2017-07-07 | Frequency regulator and method when optical maser wavelength based on coupling crosstalk theory is adjustable and long |
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| CN201710550797.6A CN107147002B (en) | 2017-07-07 | 2017-07-07 | Frequency regulator and method when optical maser wavelength based on coupling crosstalk theory is adjustable and long |
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| CN107147002A CN107147002A (en) | 2017-09-08 |
| CN107147002B true CN107147002B (en) | 2019-03-22 |
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| CN112583482B (en) * | 2020-11-17 | 2022-04-12 | 新沂市锡沂高新材料产业技术研究院有限公司 | Novel atmosphere laser communication equipment and communication method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1326362A1 (en) * | 2001-12-21 | 2003-07-09 | Agilent Technologies, Inc. (a Delaware corporation) | Accelerated measurement of bit error ratio |
| EP2958254A1 (en) * | 2014-06-12 | 2015-12-23 | Honeywell International Inc. | Controlled modulation of light beam with highly stable suppression of carrier or sidebands |
| CN106850684A (en) * | 2017-03-24 | 2017-06-13 | 中国科学院半导体研究所 | Based on the optical-fiber network physical attacks device and method that coupling crosstalk is theoretical |
-
2017
- 2017-07-07 CN CN201710550797.6A patent/CN107147002B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1326362A1 (en) * | 2001-12-21 | 2003-07-09 | Agilent Technologies, Inc. (a Delaware corporation) | Accelerated measurement of bit error ratio |
| EP2958254A1 (en) * | 2014-06-12 | 2015-12-23 | Honeywell International Inc. | Controlled modulation of light beam with highly stable suppression of carrier or sidebands |
| CN106850684A (en) * | 2017-03-24 | 2017-06-13 | 中国科学院半导体研究所 | Based on the optical-fiber network physical attacks device and method that coupling crosstalk is theoretical |
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