CN106130628B - A kind of monitoring method and device of optical signal to noise ratio - Google Patents
A kind of monitoring method and device of optical signal to noise ratio Download PDFInfo
- Publication number
- CN106130628B CN106130628B CN201610547865.9A CN201610547865A CN106130628B CN 106130628 B CN106130628 B CN 106130628B CN 201610547865 A CN201610547865 A CN 201610547865A CN 106130628 B CN106130628 B CN 106130628B
- Authority
- CN
- China
- Prior art keywords
- optical signal
- power
- signal
- noise ratio
- road
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07953—Monitoring or measuring OSNR, BER or Q
Abstract
The embodiment of the invention discloses a kind of monitoring method of optical signal to noise ratio and devices, it is related to optical communication system optical signal property monitoring technical field, the method comprise the steps that obtaining to light signal and being divided into first via optical signal and the second road optical signal to light signal for described；The out-of-band noise of the first via optical signal is filtered out, the first power is exported；The output power of second road optical signal is locked, the second power is exported；According to second power and first power, determine the difference of second power and first power and the homologous thread of the optical signal to noise ratio to light signal, in optical signal-to-noise ratio monitoring, according to the difference of currently received second power and the first power, the current optical signal to noise ratio in the homologous thread is monitored.Using the embodiment of the present invention quick, reliable and dynamic optical signal to noise ratio in real time monitoring can be realized in the case where being not take up effective spectrum resource and not being changed to transmitting terminal.
Description
Technical field
The present invention relates to optical communication system optical signal property monitoring technical field, in particular to a kind of monitoring of optical signal to noise ratio
Method and device.
Background technique
Guarantor with optical communication system in the fast development of network flexibility and transmission capacity, as signal error free transport
Barrier, optical signal property monitoring technology have been to be concerned by more and more people.OSNR (Optical Signal-To-Noise Ratio,
Optical signal to noise ratio) it is one of important performance measurement standard, it directly affects the quality of signal quality.
In traditional monitoring technology with outer OSNR, OSNR is mainly based upon spectroanalysis instrument to read out-of-band noise function
Rate is monitored.However, the monitoring method of existing OSNR, for example, the monitoring method based on pilot tone, needs to occupy effective frequency spectrum
Resource reduces the availability of frequency spectrum, and needs to be changed the transmitting terminal of signal, can not authentic and valid and real-time dynamic
Ground monitors OSNR.
Summary of the invention
The monitoring method and device for being designed to provide a kind of optical signal to noise ratio of the embodiment of the present invention can be not take up effectively
Frequency spectrum resource and in the case where not being changed to the transmitting terminal of signal, realize quick, reliable and dynamic light noise in real time
The monitoring of ratio.
In order to achieve the above objectives, the embodiment of the invention discloses a kind of monitoring methods of optical signal to noise ratio, comprising:
It obtains to light signal and is divided into first via optical signal and the second road optical signal to light signal for described；
The out-of-band noise of the first via optical signal is filtered out, the first power is exported；
The output power of second road optical signal is locked, the second power is exported；
According to second power and first power, determine second power and first power difference,
With the homologous thread of the optical signal to noise ratio to light signal, in optical signal-to-noise ratio monitoring, according to currently received second power
With the difference of the first power, the current optical signal to noise ratio in the homologous thread is monitored.
Preferably, the acquisition is divided into first via optical signal and the second tunnel to light signal to light signal and by described
Optical signal, comprising:
Obtain useful optical signal and noise signal；
Synthesize the useful optical signal and the noise signal be it is described all the way to light signal and amplify, after respectively amplifying
To light signal be the first via optical signal and second road optical signal.
Preferably, the first power of the output, comprising:
The first via optical signal after filtering out out-of-band noise is converted as first via electric signal；
Filter out the first radio-frequency spectrum that centre frequency is set in the first via electric signal；
The power of first radio-frequency spectrum is measured, first power is exported.
Preferably, the second power of the output, comprising:
The second road optical signal after converting locking output power is the second road electric signal；
Filter out the second radio-frequency spectrum that centre frequency is set in the electric signal of second road；
The power of second radio-frequency spectrum is measured, second power is exported.
Preferably, the frequency of second radio-frequency spectrum is identical as the frequency of first radio-frequency spectrum.
The embodiment of the invention discloses a kind of monitoring devices of optical signal to noise ratio, comprising:
Optical signal spectral module, for obtaining to light signal and being divided into first via optical signal to light signal for described
With the second road optical signal；
First via optical signal prosessing module exports the first power for filtering out the out-of-band noise of the first via optical signal；
Second road optical signal prosessing module exports the second power for locking the output power of second road optical signal；
Optical signal-to-noise ratio monitoring module, for determining second power according to second power and first power
With the difference of first power and the homologous thread of the optical signal to noise ratio to light signal, in optical signal-to-noise ratio monitoring, root
According to the difference of currently received second power and the first power, the current optical signal to noise ratio in the homologous thread is monitored.
Preferably, the optical signal spectral module includes:
Useful optical signal generation module, for generating useful optical signal；
Noise signal generation module, for generating noise signal；
First coupling module, for synthesizing the useful optical signal and the noise signal as the light letter to be measured all the way
Number；
Light amplification module, it is described to light signal for amplifying；
Second coupling module, for respectively it is amplified to light signal be the first via optical signal and second tunnel
Optical signal.
Preferably, the first via optical signal prosessing module includes:
Light belt pass filtering module, for filtering out the out-of-band noise of the first via optical signal；
First photoelectric detection module, for converting the first via optical signal after filtering out out-of-band noise as first via electric signal；
First electric bandpass filtering modules block, for filtering out the first radio frequency for setting centre frequency in the first via electric signal
Spectrum；
First power measurement module exports first power for measuring the power of first radio-frequency spectrum.
Preferably, the second road optical signal prosessing module includes:
Electronics adjustable damping module, for locking the output power of second road optical signal；
Second photoelectric detection module, for converting the second road optical signal after locking output power as the second road electric signal；
Second electric bandpass filtering modules block, for filtering out the second radio frequency for setting centre frequency in the electric signal of second road
Spectrum；
Second power measurement module exports second power for measuring the power of second radio-frequency spectrum.
Preferably, the frequency of second radio-frequency spectrum is identical as the frequency of first radio-frequency spectrum.
As seen from the above technical solutions, the monitoring method and device of optical signal to noise ratio provided in an embodiment of the present invention, by institute
It states and is divided into the first via optical signal and second road optical signal to light signal, the first via optical signal is used and filtered out
The processing mode of out-of-band noise exports first power；Second road optical signal is using the processing mode for locking output power
Export second power.With the variation of OSNR, first power and second power can also change, and determine institute
State the difference of the second power and first power and the homologous thread of the optical signal to noise ratio to light signal.In light noise
When than monitoring, according to the difference of currently received second power and the first power, the current light letter in the homologous thread is monitored
It makes an uproar ratio.The embodiment of the present invention compared to individually optical signal is monitored all the way when, substantially increase monitoring sensitivity and
Monitoring range.
Certainly, it implements any of the products of the present invention or method must be not necessarily required to reach all the above excellent simultaneously
Point.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of flow diagram of the monitoring method of the optical signal to noise ratio of the embodiment of the present invention；
Fig. 2 is another flow diagram of the monitoring method of the optical signal to noise ratio of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the monitoring device of the optical signal to noise ratio of the embodiment of the present invention；
Fig. 4 is the connection figure of output the first power and the second power of the embodiment of the present invention；
Fig. 5 is the graph of relation of the relative changing value of OSNR of the embodiment of the present invention and radio-frequency power；
Fig. 6 is the relationship song of the optical signal to noise ratio that the embodiment of the present invention measures and the optical signal to noise ratio measured by spectroanalysis instrument
Line chart.
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 carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a kind of monitoring method of optical signal to noise ratio and devices, are described in detail separately below.
Referring to Fig. 1, Fig. 1 is a kind of flow diagram of the monitoring method of the optical signal to noise ratio of the embodiment of the present invention, including such as
Lower step:
Step 101, it obtains to light signal and is divided into first via optical signal and the second road light to light signal for described
Signal.
Step 102, the out-of-band noise of the first via optical signal is filtered out, the first power is exported.
Step 103, the output power of second road optical signal is locked, the second power is exported.
Step 104, according to second power and first power, second power and first power are determined
Difference and the optical signal to noise ratio to light signal homologous thread, in optical signal-to-noise ratio monitoring, according to currently received
The difference of two power and the first power monitors the current optical signal to noise ratio in the homologous thread.
As it can be seen that being divided into described to light signal using the monitoring method of optical signal to noise ratio provided in an embodiment of the present invention
Two ways of optical signals obtains second power and first power using different processing modes to the two ways of optical signals
The homologous thread of difference and the optical signal to noise ratio to light signal.In optical signal-to-noise ratio monitoring, according to currently received second
The difference of power and the first power monitors the current optical signal to noise ratio in the homologous thread.The embodiment of the present invention is compared to list
When only optical signal all the way is monitored, sensitivity and the monitoring range of monitoring are substantially increased.
Referring to fig. 2, Fig. 2 is another flow diagram of the monitoring method of the optical signal to noise ratio of the embodiment of the present invention, including
Following steps:
Step 201, it obtains to light signal and is divided into first via optical signal and the second road light to light signal for described
Signal.
In this step, described to light signal includes: useful optical signal and noise signal；It is used up by adjusting with described
The variation of optical signal to noise ratio may be implemented in the size of the noise power of signal coupling.
Step 202, the out-of-band noise of the first via optical signal is filtered out.
Step 203, the first via optical signal after filtering out out-of-band noise is converted as first via electric signal.
Step 204, the first radio-frequency spectrum that centre frequency is set in the first via electric signal is filtered out.
In practical application, the setting centre frequency can take many values such as 5GHz, 10GHz, 20GHz and 40GHz.
Step 205, the power of first radio-frequency spectrum is measured, the first power is exported.
With the reduction of noise power, OSNR be will increase, but filter out with the total of the interior first via optical signal
Performance number can become smaller, and the power of electrical domain radio-frequency spectrum is caused to become smaller, so, first power reduces with the increase of OSNR.
Step 206, the output power of second road optical signal is locked.
In practical application, the output power of locking is set according to the power of second road optical signal.
Step 207, the second road optical signal after converting locking output power is the second road electric signal.
Step 208, the second radio-frequency spectrum that centre frequency is set in the electric signal of second road is filtered out.
Preferably, in the monitoring method of the optical signal to noise ratio of the embodiment of the present invention, the frequency of second radio-frequency spectrum with it is described
The frequency of first radio-frequency spectrum is identical.
Step 209, the power of second radio-frequency spectrum is measured, the second power is exported.
With the reduction of noise power, OSNR be will increase, due to the output power of the electronics adjustable damping module
It is constant, the reduction of noise power so that the electronics adjustable damping module reduces the decaying of second road optical signal,
Constant output power is maintained with this, so that the output power of second road optical signal increases with the increase of OSNR, most
The power of electrical domain radio-frequency spectrum is caused to increase eventually.So second power increases with the increase of OSNR.
Step 210, according to second power and first power, second power and first power are determined
Difference and the optical signal to noise ratio to light signal homologous thread.
Change OSNR by changing the size for the noise power that input terminal and the useful optical signal couple,
Output end different first power and second power are obtained, and calculates second power and first power
Difference, different OSNR correspond to the difference of different second power and first power, obtain second power with
The difference of first power and the homologous thread of OSNR.
Step 211, in optical signal-to-noise ratio monitoring, according to the difference of currently received second power and the first power, monitoring
Current optical signal to noise ratio in the homologous thread.
The embodiment of the present invention is using second power with first power as the increase of optical signal to noise ratio is presented respectively
Two kinds of trend of raising and lowering monitor optical signal to noise ratio by the difference of second power and first power, compared to list
The range of monitoring and the sensitivity of monitoring can be greatly improved when solely optical signal is monitored all the way.
It is the structural schematic diagram of the monitoring device of the optical signal to noise ratio of the embodiment of the present invention referring to Fig. 3, Fig. 3, comprising:
Optical signal spectral module 301, for obtaining to light signal and being divided into first via light to light signal for described
Signal and the second road optical signal.
First via optical signal prosessing module 302 exports the first function for filtering out the out-of-band noise of the first via optical signal
Rate.
With the reduction of noise power, OSNR be will increase, but filter out with the total of the interior first via optical signal
Performance number can become smaller, and the power of electrical domain radio-frequency spectrum is caused to become smaller, so, first power reduces with the increase of OSNR.
Second road optical signal prosessing module 303 exports the second function for locking the output power of second road optical signal
Rate.
With the reduction of noise power, OSNR be will increase, due to the output power of the electronics adjustable damping module
It is constant, the reduction of noise power so that the electronics adjustable damping module reduces the decaying of second road optical signal,
Constant output power is maintained with this, so that the power of second road optical signal increases with the increase of OSNR, is finally led
The power for sending a telegraph domain radio-frequency spectrum increases.So second power increases with the increase of OSNR.
Optical signal-to-noise ratio monitoring module 304, for determining second function according to second power and first power
Rate and the difference of first power and the homologous thread of the optical signal to noise ratio to light signal, in optical signal-to-noise ratio monitoring,
According to the difference of currently received second power and the first power, the current optical signal to noise ratio in the homologous thread is monitored.
As it can be seen that being divided into described to light signal using the monitoring device of optical signal to noise ratio provided in an embodiment of the present invention
Two ways of optical signals obtains second power and first power using different processing modes to the two ways of optical signals
The homologous thread of difference and the optical signal to noise ratio to light signal.In optical signal-to-noise ratio monitoring, according to the homologous thread and
The difference of currently received second power and the first power, monitors current optical signal to noise ratio.The embodiment of the present invention is compared to independent
Optical signal all the way when being monitored, substantially increase sensitivity and the monitoring range of monitoring.
Preferably, in the monitoring device of the optical signal to noise ratio of the embodiment of the present invention, the optical signal spectral module includes:
Useful optical signal generation module, for generating useful optical signal；
Noise signal generation module, for generating noise signal；By described in adjusting and the useful optical signal coupling
The variation of optical signal to noise ratio may be implemented in the size of noise power.
First coupling module, for synthesizing the useful optical signal and the noise signal as the light letter to be measured all the way
Number；
Light amplification module, it is described to light signal for amplifying；
Second coupling module, for respectively it is amplified to light signal be the first via optical signal and second tunnel
Optical signal.
Preferably, in the monitoring device of the optical signal to noise ratio of the embodiment of the present invention, the first via optical signal prosessing module packet
It includes:
Light belt pass filtering module, for filtering out the out-of-band noise of first via optical signal；
First photoelectric detection module, for converting the first via optical signal after filtering out out-of-band noise as first via electric signal；
First electric bandpass filtering modules block, for filtering out the first radio frequency for setting centre frequency in the first via electric signal
Spectrum；
First power measurement module exports first power for measuring the power of first radio-frequency spectrum.
In practical application, the setting centre frequency can take many values such as 5GHz, 10GHz, 20GHz and 40GHz.
Preferably, in the monitoring device of the optical signal to noise ratio of the embodiment of the present invention, the second road optical signal prosessing module packet
It includes:
Electronics adjustable damping module, for locking the output power of second road optical signal；
Second photoelectric detection module, for converting the second road optical signal after locking output power as the second road electric signal；
Second electric bandpass filtering modules block, for filtering out the second radio frequency for setting centre frequency in the electric signal of second road
Spectrum；
Second power measurement module exports second power for measuring the power of second radio-frequency spectrum.
Preferably, in the monitoring device of the optical signal to noise ratio of the embodiment of the present invention, the frequency of second radio-frequency spectrum with it is described
The frequency of first radio-frequency spectrum is identical.
The embodiment of the present invention is using second power with first power as the increase of optical signal to noise ratio is presented respectively
Two kinds of trend of raising and lowering monitor optical signal to noise ratio by the difference of second power and first power, compared to list
The range of monitoring and the sensitivity of monitoring can be greatly improved when solely optical signal is monitored all the way.
The specific entity of the first power and the second power is exported in the monitoring device of the optical signal to noise ratio of the embodiment of the present invention
Application scenarios are exemplified below.
Referring to fig. 4, Fig. 4 is the connection figure of output the first power and the second power of the embodiment of the present invention, comprising: optical signal
It is divided circuit 400, first via optical signal processing circuit 410 and the second road optical signal processing circuit 420, in which:
The optical signal light splitting circuit 400 includes: useful optical signal generator 401, noise signal generator 402, first
Coupler 403, image intensifer 404 and the second coupler 405；Wherein, the input terminal of first coupler 403 respectively with it is described
The connection of the output end of the output end of useful optical signal generator 401 and the noise signal generator 402, the image intensifer
404 input terminal is connect with the output end of first coupler 403, the input terminal and the light of second coupler 405
The output end of amplifier 404 connects.
The useful optical signal generator 401, for generating useful optical signal；
The noise signal generator 402, for generating noise signal, the noise signal is amplified based on erbium-doped fiber
The spontaneous emission noise that device generates realizes the variation of optical signal to noise ratio by adjusting the size of noise power；
First coupler 403 is described to be measured all the way for synthesizing the useful optical signal and the noise signal
Optical signal；
The image intensifer 404, it is described to light signal for amplifying；
Second coupler 405, for it is respectively amplified to light signal be the first via optical signal and described
Second road optical signal.
First via optical signal processing circuit 410 includes: optical band pass filter 411, first the 412, first electricity of photodetector
Bandpass filter 413 and the first power meter 414；Wherein, the input terminal of the optical band pass filter 411 and second coupler
405 output end connection, the input terminal of first photodetector 412 are connect with the output end of optical band pass filter 411, institute
The input terminal for stating the first electric bandpass filter 413 is connect with the output end of first photodetector 412, first power
The input terminal of meter 414 is connect with the output end of the described first electric bandpass filter 413.
The optical band pass filter 411, for filtering out the out-of-band noise of first via optical signal, to eliminate the out-of-band noise
Influence to optical signal-to-noise ratio monitoring；
First photodetector 412, for converting the first via optical signal after filtering out out-of-band noise as first via electricity
Signal；
Described first electric bandpass filter 413, sets the first of centre frequency for filtering out in the first via electric signal
Radio-frequency spectrum；
In the present embodiment, the centre frequency of the described first electric bandpass filter is set as 10GHz；
First power meter 414 exports first power for measuring the power of first radio-frequency spectrum.
With the reduction of noise power, OSNR be will increase, but filter out with the total of the interior first via optical signal
Performance number can become smaller, and the power of electrical domain radio-frequency spectrum is caused to become smaller, so, first power reduces with the increase of OSNR.
Second road optical signal processing circuit 420 includes: electronics adjustable attenuator 421, the second photodetector 422, second
Electric bandpass filter 423 and the second power meter 424；Wherein, the input terminal of the electronics adjustable attenuator 421 and second coupling
The output end of clutch 405 connects, and the input terminal of second photodetector 422 is defeated with the electronics adjustable attenuator 421
The input terminal of outlet connection, the described second electric bandpass filter 423 is connect with the output end of second photodetector 422,
The input terminal of second power meter 424 is connect with the output end of the described second electric bandpass filter 423.
The electronics adjustable attenuator 421 is fiber coupling variable attenuator, for locking second road optical signal
Output power；
In the embodiment of the present invention, it is minimum that the output power of the electronics adjustable attenuator is set as OSNR in monitoring range
When, input the performance number of second road optical signal of the electronics adjustable attenuator；
Second photodetector 422, for converting the second road optical signal after locking output power as the second road electricity
Signal；
Described second electric bandpass filter 423, sets the second of centre frequency for filtering out in the electric signal of second road
Radio-frequency spectrum, wherein the frequency of second radio-frequency spectrum is identical as the frequency of first radio-frequency spectrum；
Second power meter 424 exports second power for measuring the power of second radio-frequency spectrum.
With the reduction of noise power, OSNR be will increase, since the output power of the electronics adjustable attenuator is permanent
Fixed, the reduction of noise power is so that the electronics adjustable attenuator reduces the decaying of second road optical signal, with this
Constant output power is maintained, so that the power of second road optical signal increases with the increase of OSNR, eventually leads to electricity
The power of domain radio-frequency spectrum increases.So second power increases with the increase of OSNR.
The electronics adjustable attenuator 421 includes: variable optical attenuator 4211, low percentage sampling apparatus 4212, photoelectricity
Diode 4213 and power blockage control loop 4214；
The variable optical attenuator 4211, for so that the power of output is kept constant；
The low percentage sampling apparatus 4212, for being adopted to the optical signal for being input to the variable optical attenuator
Sample；
The photodiode 4213, for Sampled optical signals to be converted into electric signal；
The power blockage control loop 4214 adjusts the variable optical attenuator for information according to the electric signal
So that the power of output is kept constant.
With the reduction of noise power, optical signal to noise ratio be will increase, second power and first power with
The increase of optical signal to noise ratio is in two kinds of trend of raising and lowering respectively, according to the difference pair of second power and first power
Optical signal to noise ratio is monitored the sensitivity for being greatly improved monitoring and monitoring range.
According to Fig. 4, by change input terminal and the useful optical signal coupling the noise power size come
Change OSNR, obtain first power and second power of output end corresponding change, and calculate second power with
The difference of first power, different OSNR correspond to the difference of different second power and first power, obtain
Second power and the difference of first power and the homologous thread of OSNR.In optical signal-to-noise ratio monitoring, according to described right
The difference for answering curve and currently received second power and the first power, monitors current optical signal to noise ratio.
In the present embodiment, the range for changing OSNR is 2dB to 30dB.In OSNR variation range, described first is recorded
The value of power and second power, and the difference of second power Yu first power is calculated, finally obtain described
Two power and the difference of first power and the homologous thread of OSNR, the difference of second power and first power
It is denoted as the relative changing value of radio-frequency power.As shown in figure 5, Fig. 5 is OSNR of the embodiment of the present invention and the opposite variation of radio-frequency power
The corresponding curve diagram of value.It can be seen from the figure that in sufficiently large dynamic range, optical signal to noise ratio provided in an embodiment of the present invention
Monitoring device monitoring range of the OSNR from 2dB to 30dB may be implemented.After obtaining the homologous thread, monitor afterwards
When OSNR, corresponding OSNR can be directly found by the relative changing value of the radio-frequency power, the prison of OSNR is realized with this
It surveys.
As shown in fig. 6, Fig. 6 is the optical signal to noise ratio that the embodiment of the present invention measures and the light noise that is measured by spectroanalysis instrument
The graph of relation of ratio.Dotted line in Fig. 6 is the optical signal to noise ratio that spectroanalysis instrument measures and the light noise that this experimental provision measures
Than equal curve, the solid line in Fig. 6 is the optical signal to noise ratio that the monitoring device of optical signal to noise ratio provided in an embodiment of the present invention measures
Curve.From fig. 6 it can be seen that the error (difference of solid line and dotted line) of the OSNR and practical OSNR measured based on the present apparatus is small
In 2dB, the monitoring of accurate optical signal to noise ratio may be implemented.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Each embodiment in this specification is all made of relevant mode and describes, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality
For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method
Part explanation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (10)
1. a kind of monitoring method of optical signal to noise ratio characterized by comprising
It obtains to light signal and is divided into first via optical signal and the second road optical signal to light signal for described；
The out-of-band noise of the first via optical signal is filtered out, the first power is exported；
The output power of second road optical signal is locked, the second power is exported；
According to second power and first power, difference and the institute of second power and first power are determined
The homologous thread for stating the optical signal to noise ratio to light signal, in optical signal-to-noise ratio monitoring, according to currently received second power and
The difference of one power monitors the current optical signal to noise ratio in the homologous thread；Second power and first power with
Two kinds of trend of raising and lowering are presented in the increase of optical signal to noise ratio respectively.
2. the monitoring method of optical signal to noise ratio as described in claim 1, which is characterized in that described to obtain to light signal and by institute
It states and is divided into first via optical signal and the second road optical signal to light signal, comprising:
Obtain useful optical signal and noise signal；
Synthesize the useful optical signal and the noise signal be it is described all the way to light signal and amplify, respectively it is amplified to
Light signal is the first via optical signal and second road optical signal.
3. the monitoring method of optical signal to noise ratio as described in claim 1, which is characterized in that the first power of the output, comprising:
The first via optical signal after filtering out out-of-band noise is converted as first via electric signal；
Filter out the first radio-frequency spectrum that centre frequency is set in the first via electric signal；
The power of first radio-frequency spectrum is measured, first power is exported.
4. the monitoring method of optical signal to noise ratio as claimed in claim 3, which is characterized in that the second power of the output, comprising:
The second road optical signal after converting locking output power is the second road electric signal；
Filter out the second radio-frequency spectrum that centre frequency is set in the electric signal of second road；
The power of second radio-frequency spectrum is measured, second power is exported.
5. the monitoring method of optical signal to noise ratio as claimed in claim 4, which is characterized in that the frequency of second radio-frequency spectrum and institute
The frequency for stating the first radio-frequency spectrum is identical.
6. a kind of monitoring device of optical signal to noise ratio characterized by comprising
Optical signal spectral module, for obtaining to light signal and being divided into first via optical signal and the to light signal for described
Two road optical signals；
First via optical signal prosessing module exports the first power for filtering out the out-of-band noise of the first via optical signal；
Second road optical signal prosessing module exports the second power for locking the output power of second road optical signal；
Optical signal-to-noise ratio monitoring module, for determining second power and institute according to second power and first power
The difference of the first power and the homologous thread of the optical signal to noise ratio to light signal are stated, in optical signal-to-noise ratio monitoring, according to working as
The difference of preceding received second power and the first power, monitors the current optical signal to noise ratio in the homologous thread；Second function
Rate is with first power as two kinds of trend of raising and lowering are presented in the increase of optical signal to noise ratio respectively.
7. the monitoring device of optical signal to noise ratio as claimed in claim 6, which is characterized in that the optical signal spectral module includes:
Useful optical signal generation module, for generating useful optical signal；
Noise signal generation module, for generating noise signal；
First coupling module is described to light signal all the way for synthesizing the useful optical signal and the noise signal；
Light amplification module, it is described to light signal for amplifying；
Second coupling module, for respectively it is amplified to light signal be the first via optical signal and second Lu Guangxin
Number.
8. the monitoring device of optical signal to noise ratio as claimed in claim 6, which is characterized in that the first via optical signal prosessing module
Include:
Light belt pass filtering module, for filtering out the out-of-band noise of the first via optical signal；
First photoelectric detection module, for converting the first via optical signal after filtering out out-of-band noise as first via electric signal；
First electric bandpass filtering modules block, for filtering out the first radio-frequency spectrum for setting centre frequency in the first via electric signal；
First power measurement module exports first power for measuring the power of first radio-frequency spectrum.
9. the monitoring device of optical signal to noise ratio as claimed in claim 8, which is characterized in that the second road optical signal prosessing module
Include:
Electronics adjustable damping module, for locking the output power of second road optical signal；
Second photoelectric detection module, for converting the second road optical signal after locking output power as the second road electric signal；
Second electric bandpass filtering modules block, for filtering out the second radio-frequency spectrum for setting centre frequency in the electric signal of second road；
Second power measurement module exports second power for measuring the power of second radio-frequency spectrum.
10. the monitoring device of optical signal to noise ratio as claimed in claim 9, which is characterized in that the frequency of second radio-frequency spectrum with
The frequency of first radio-frequency spectrum is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610547865.9A CN106130628B (en) | 2016-07-12 | 2016-07-12 | A kind of monitoring method and device of optical signal to noise ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610547865.9A CN106130628B (en) | 2016-07-12 | 2016-07-12 | A kind of monitoring method and device of optical signal to noise ratio |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106130628A CN106130628A (en) | 2016-11-16 |
| CN106130628B true CN106130628B (en) | 2019-04-05 |
Family
ID=57284063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610547865.9A Active CN106130628B (en) | 2016-07-12 | 2016-07-12 | A kind of monitoring method and device of optical signal to noise ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106130628B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696243B (en) * | 2018-11-23 | 2020-07-14 | 武汉光迅科技股份有限公司 | Optical noise measurement method and device and computer readable storage medium |
| CN110212976B (en) * | 2019-06-06 | 2020-11-10 | 苏州大学 | Optical signal-to-noise ratio monitoring method based on artificial neural network |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2309663A1 (en) * | 2009-10-09 | 2011-04-13 | The Provost, Fellows and Scholars of the College of the Holy and Undivided Trinity of Queen Elizabeth near Dublin | System and method for measuring optical signal-to-noise ratio |
| CN102088314A (en) * | 2011-01-24 | 2011-06-08 | 北京邮电大学 | Optical signal to noise ratio (OSNR) monitoring device and monitoring method |
| CN103152098A (en) * | 2013-02-05 | 2013-06-12 | 北京邮电大学 | Polarization interference-based in-band optical signal-to-noise ratio detection method and device |
| CN104883220A (en) * | 2014-02-27 | 2015-09-02 | 苏州工业园区新国大研究院 | Optical signal-to-noise ratio monitoring method and device thereof |
-
2016
- 2016-07-12 CN CN201610547865.9A patent/CN106130628B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2309663A1 (en) * | 2009-10-09 | 2011-04-13 | The Provost, Fellows and Scholars of the College of the Holy and Undivided Trinity of Queen Elizabeth near Dublin | System and method for measuring optical signal-to-noise ratio |
| CN102088314A (en) * | 2011-01-24 | 2011-06-08 | 北京邮电大学 | Optical signal to noise ratio (OSNR) monitoring device and monitoring method |
| CN103152098A (en) * | 2013-02-05 | 2013-06-12 | 北京邮电大学 | Polarization interference-based in-band optical signal-to-noise ratio detection method and device |
| CN104883220A (en) * | 2014-02-27 | 2015-09-02 | 苏州工业园区新国大研究院 | Optical signal-to-noise ratio monitoring method and device thereof |
Non-Patent Citations (2)
| Title |
|---|
| Chromatic dispersion and polarization mode dispersion insensitive optical signal to noise ratio monitoring based on electronic variable optical attenuators and optical bandpass filter;Junde Chang,etal.;《PROCEEDINGS OF SPIE》;20161014;第1001919-1至1001919-6页 |
| Optical Signal to Noise Ratio Monitoring Based on Optical Filtering Effects in High-Speed Optical Transmission Systems;Changyuan Yu,etal.;《2015 17th International Conference on Transparent Optical Networks (ICTON)》;20150709;第1-4页 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106130628A (en) | 2016-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101170360B (en) | A signal optical power detection device and detection method | |
| EP3764566A1 (en) | Detection method and device for high-dynamic-range optical time domain reflection | |
| CN202168083U (en) | Photoelectric detecting receiving device with large dynamic range | |
| CN105577272A (en) | In-band noise determination on optical communication signals | |
| CN106130628B (en) | A kind of monitoring method and device of optical signal to noise ratio | |
| EP2056494A1 (en) | System and method for rapidly achieving optimum dispersion in optical transmission systems | |
| CN109412685B (en) | Semiconductor detector chip detection method | |
| CN105890779B (en) | A kind of real-time wavelength caliberating device and scaling method for length scanning system | |
| JP2015521418A (en) | Wavelength label collision detection method and apparatus, and wavelength label receiver | |
| US8582093B2 (en) | Signal light monitoring apparatus and signal light monitoring method | |
| US8103164B2 (en) | High frequency noise measurement board | |
| CN112564817A (en) | Optical modulation receiver topology circuit | |
| WO2004051889A2 (en) | Flash optical performance monitor | |
| KR100813566B1 (en) | Hfc transmission network monitoring apparatus | |
| CN106341189B (en) | Optical module | |
| US20010009467A1 (en) | Dispersion compensation monitoring device and method, dispersion control apparatus and method, optical receiver, and optical transmission system | |
| CN207603642U (en) | A kind of photoreceiver with forward signal quality inspection device | |
| EP1517459B1 (en) | Method and device of analyzing a signal transmitted via a communication link | |
| CN217721199U (en) | FTTH optical receiving module and optical receiver | |
| CN114614858B (en) | Microwave frequency conversion system and control method thereof | |
| CN214205545U (en) | Optical modulation receiver topology circuit | |
| EP1376899B1 (en) | System and method for quantification of optical signal-to-noise ratio using low frequency electrical signal analysis | |
| KR100339663B1 (en) | Apparatus for monitoring optical signal quality in a optical communication system | |
| EP0957595A2 (en) | Signal-to-noise ratio monitoring apparatus and method in optical signals | |
| KR100350234B1 (en) | Method for monitoring of bit error rate using the power of clock component |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |