WO2021258670A1 - 一种相干光模块的定标方法、装置、设备及计算机可读存储介质 - Google Patents

一种相干光模块的定标方法、装置、设备及计算机可读存储介质 Download PDF

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Publication number
WO2021258670A1
WO2021258670A1 PCT/CN2020/136232 CN2020136232W WO2021258670A1 WO 2021258670 A1 WO2021258670 A1 WO 2021258670A1 CN 2020136232 W CN2020136232 W CN 2020136232W WO 2021258670 A1 WO2021258670 A1 WO 2021258670A1
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Prior art keywords
incident light
optical power
receiving end
optical module
coherent
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PCT/CN2020/136232
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English (en)
French (fr)
Inventor
陈�胜
邹晖
张武平
张博
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武汉光迅科技股份有限公司
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Application filed by 武汉光迅科技股份有限公司 filed Critical 武汉光迅科技股份有限公司
Priority to EP20942039.7A priority Critical patent/EP4174687A1/en
Priority to US18/000,115 priority patent/US20230198629A1/en
Publication of WO2021258670A1 publication Critical patent/WO2021258670A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/15—Correlation function computation including computation of convolution operations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/564—Power control
    • 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
    • H04B10/60—Receivers
    • H04B10/61—Coherent receivers
    • H04B10/616—Details of the electronic signal processing in coherent optical receivers
    • 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
    • H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
    • H04B10/806—Arrangements for feeding power

Definitions

  • the embodiments of the present disclosure relate to the field of optical fiber technology, and in particular, to a calibration method, device, equipment, and computer-readable storage medium of a coherent optical module.
  • the total optical power at the receiving end is generally reported by the receiving photodiode (PD) for calibration.
  • PD photodiode
  • external spectroscopic detectors Tap Photo Detector, TAP-PD
  • the PD integrated in the receiver of the module may be used for reporting and calibration.
  • some manufacturers may not integrate the internal PD.
  • the optical power calibration cannot rely on the PD. How to not rely on PD, ensure that the reporting curve obtained in the entire receiving end optical power range is linear, and improve the reporting accuracy in the entire optical power range. There is currently no effective solution to this problem.
  • the main purpose of the present disclosure is to provide a calibration method, device, equipment, and computer-readable storage medium for a coherent optical module, which can at least partially solve the above technical problems.
  • an embodiment of the present disclosure provides a method for calibrating a coherent optical module.
  • the method includes: obtaining a first curve relationship and a second curve relationship; the first curve relationship indicates that the coherent optical module corresponds to receiving The relationship between the reported voltage of the power gain and the optical power of the receiving end within the optical power range of the end; the reported voltage of the power gain is used to measure the voltage amplitude output by the integrated coherent receiver in the coherent optical module; the second curve relationship represents the The coherent optical module corresponds to the relationship between the target setting voltage of the receiving end optical power range and the receiving end optical power; the target setting voltage is used to adjust the voltage amplitude output by the integrated coherent receiver in the coherent optical module; based on the first curve The relationship and the second curve relationship determine the first optical power; the first optical power is used to divide the receiving end optical power range into two ranges; the first of the two ranges is greater than the The lower limit of the receiving end optical power range is less than the first optical power; the second range of the two ranges is greater than or equal
  • the calibrating the coherent optical module using the first curve relationship includes: acquiring multiple sets of first data that satisfy the first curve relationship; Performing fitting processing on the multiple sets of first data to obtain a first calibration function within the first range; and using the second curve relationship to calibrate the coherent optical module includes: obtaining A plurality of sets of second data of a second curve relationship; fitting processing is performed on the plurality of sets of second data to obtain a second calibration function in the second range.
  • the obtaining the first curve relationship and the second curve relationship includes: adjusting the optical power of the incident light within the optical power range of the receiving end corresponding to the coherent optical module , And perform spectroscopic processing on each of the adjusted incident light to obtain the first incident light and the second incident light corresponding to each incident light; the incident light is the light beam received by the receiving end of the coherent optical module; The optical power corresponding to the first incident light corresponding to each incident light; to obtain the power gain corresponding to the second incident light corresponding to each incident light, the reported voltage and the target setting voltage; according to the light corresponding to the first incident light corresponding to the same incident light The power and the reported voltage of the power gain corresponding to the second incident light determine the first curve relationship; the second curve is determined according to the optical power corresponding to the first incident light corresponding to the same incident light and the target setting voltage corresponding to the second incident light Curve relationship.
  • the obtaining the first curve relationship and the second curve relationship includes: performing attenuation processing on the optical power of the incident light within the optical power range of the corresponding receiving end of the coherent optical module , And perform spectroscopic processing on each attenuated incident light to obtain the first incident light and the second incident light corresponding to each incident light; the incident light is the light beam received by the receiving end of the coherent optical module; The optical power corresponding to the first incident light corresponding to each incident light; to obtain the power gain corresponding to the second incident light corresponding to each incident light, the reported voltage and the target setting voltage; according to the light corresponding to the first incident light corresponding to the same incident light The power and the reported voltage of the power gain corresponding to the second incident light determine the first curve relationship; the second curve is determined according to the optical power corresponding to the first incident light corresponding to the same incident light and the target setting voltage corresponding to the second incident light Curve relationship.
  • the method before the obtaining the first curve relationship and the second curve relationship, the method further includes: performing initialization processing on the coherent optical module; the initialization processing includes: The optical power of the corresponding receiving end of the coherent optical module is adjusted to the upper limit of the optical power range of the receiving end.
  • An embodiment of the present disclosure also provides a calibration device for a coherent optical module, the device includes: an obtaining unit, a determining unit, and a calibration unit, wherein:
  • the obtaining unit is configured to obtain a first curve relationship and a second curve relationship; the first curve relationship represents the relationship between the power gain reported voltage and the receiving end optical power within the corresponding receiving end optical power range of the coherent optical module;
  • the power gain report voltage is used to measure the voltage amplitude output by the integrated coherent receiver in the coherent optical module;
  • the second curve relationship represents the target setting voltage and the receiving end optical power within the corresponding receiving end optical power range of the coherent optical module The relationship;
  • the target setting voltage is used to adjust the voltage amplitude output by the integrated coherent receiver in the coherent optical module;
  • the determining unit is configured to determine a first optical power based on the first curve relationship and the second curve relationship obtained by the obtaining unit; the first optical power is used to divide the receiving end optical power range Are two ranges; the first range of the two ranges is greater than the lower limit of the receiving end optical power range and smaller than the first optical power; the second range of the two ranges is greater than or equal to all The first optical power is less than the upper limit of the receiving end optical power range;
  • the calibration unit is configured to determine a calibration method of the coherent optical module based on the first optical power determined by the determining unit; the calibration method includes: optical power at the receiving end of the coherent optical module In the case of the first range, use the first curve relationship to calibrate the coherent optical module; in the case of the receiving end optical power of the coherent optical module in the second range, use the The second curve relationship performs calibration on the coherent optical module.
  • the calibration unit is further configured to obtain multiple sets of first data satisfying the first curve relationship; performing fitting processing on the multiple sets of first data to obtain The first scaling function in the first range; and obtaining multiple sets of second data satisfying the second curve relationship; performing fitting processing on the multiple sets of second data to obtain The second scaling function.
  • the obtaining unit is further configured to adjust the optical power of the incident light within the optical power range of the corresponding receiving end of the coherent optical module, and perform adjustment processing on the optical power after the adjustment.
  • Beams of incident light are subjected to spectroscopic processing to obtain the first incident light and the second incident light corresponding to each incident light; the incident light is the light beam received by the receiving end of the coherent optical module; the first incident light corresponding to each incident light is obtained The optical power corresponding to the incident light; obtain the power gain report voltage and target setting voltage corresponding to the second incident light corresponding to each incident light; according to the optical power corresponding to the first incident light and the second incident light corresponding to the same incident light The power gain reported voltage of the power gain determines the first curve relationship; the second curve relationship is determined according to the optical power corresponding to the first incident light corresponding to the same incident light and the target setting voltage corresponding to the second incident light.
  • the obtaining unit is further configured to perform attenuation processing on the optical power of the incident light within the optical power range of the corresponding receiving end of the coherent optical module, and to perform attenuation processing on the optical power of the attenuated light.
  • Beams of incident light are subjected to spectroscopic processing to obtain the first incident light and the second incident light corresponding to each incident light; the incident light is the light beam received by the receiving end of the coherent optical module; the first incident light corresponding to each incident light is obtained The optical power corresponding to the incident light; obtain the power gain report voltage and target setting voltage corresponding to the second incident light corresponding to each incident light; according to the optical power corresponding to the first incident light and the second incident light corresponding to the same incident light The power gain reported voltage of the power gain determines the first curve relationship; the second curve relationship is determined according to the optical power corresponding to the first incident light corresponding to the same incident light and the target setting voltage corresponding to the second incident light.
  • the device further includes: a processing unit configured to initialize the coherent optical module; the initialization processing includes: corresponding the coherent optical module to the optical power of the receiving end Adjust to the upper limit of the optical power range of the receiving end.
  • the embodiment of the present disclosure also provides a calibration device of a coherent optical module, the calibration device of the coherent optical module includes: a processor and a memory for storing a computer program that can run on the processor, wherein the processing When the device is used to run the computer program, it executes the steps of the above-mentioned method.
  • the embodiments of the present disclosure also provide a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by at least one processor, the steps of the foregoing method are implemented.
  • the embodiments of the present disclosure provide a method, device, device, and computer-readable storage medium for calibrating a coherent optical module.
  • the method includes: obtaining a first curve relationship and a second curve relationship; the first curve relationship represents the The relationship between the reported voltage of the power gain and the optical power of the receiving end within the optical power range of the coherent optical module corresponding to the receiving end; the reported power gain voltage is used to measure the voltage amplitude output by the integrated coherent receiver in the coherent optical module; the second The curve relationship represents the relationship between the target setting voltage and the receiving end optical power within the corresponding receiving end optical power range of the coherent optical module; the target setting voltage is used to adjust the voltage amplitude output by the integrated coherent receiver in the coherent optical module;
  • the first curve relationship and the second curve relationship determine a first optical power; the first optical power is used to divide the receiving end optical power range into two ranges; the first of the two ranges The range is greater than the lower limit of the receiving end optical power range and smaller than the first optical power; the second range of the two ranges is greater
  • the module is calibrated.
  • the first optical power is determined by the first curve relationship and the second curve relationship.
  • the first optical power is used to divide the receiving end optical power range into two ranges, and then the When the receiving end optical power of the optical module is in the first range, the first curve relationship is used to calibrate the coherent optical module; when the receiving end optical power of the coherent optical module is in the second range In the case of the range, the second curve relationship is used to calibrate the coherent optical module.
  • the calibration process does not depend on the PD.
  • the report curve obtained in the entire receiving end optical power range is calibrated by a piecewise function, thereby improving Report accuracy within the entire optical power range.
  • FIG. 1 is a schematic flowchart of a calibration method of a coherent optical module provided by an embodiment of the disclosure
  • Fig. 2 is a schematic structural diagram of a coherent optical module provided by an embodiment of the present disclosure
  • Fig. 3 is a schematic structural diagram of a coherent optical module provided by an embodiment of the present disclosure in an automatic gain control mode
  • FIG. 4 is a schematic diagram of a first curve relationship and a second curve relationship in a coherent optical module provided by an embodiment of the present disclosure
  • FIG. 5 is a schematic structural diagram of calibration using a coherent optical module provided by an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of another structure for performing calibration using the coherent optical module provided by an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a calibration device for a coherent optical module according to an embodiment of the disclosure.
  • FIG. 8 is a schematic diagram of a hardware structure of a calibration device for a coherent optical module provided by an embodiment of the disclosure.
  • FIG. 1 shows a schematic flowchart of a calibration method for a coherent optical module provided by an embodiment of the present disclosure.
  • the method includes:
  • S101 Obtain a first curve relationship and a second curve relationship; the first curve relationship represents the relationship between the power gain report voltage and the receiving end optical power within the corresponding receiving end optical power range of the coherent optical module; the power gain report voltage It is used to measure the voltage amplitude output by the integrated coherent receiver in the coherent optical module; the second curve relationship represents the relationship between the target setting voltage and the optical power of the receiving end within the optical power range of the receiving end corresponding to the coherent optical module; The target setting voltage is used to adjust the voltage amplitude output by the integrated coherent receiver in the coherent optical module.
  • S102 Determine a first optical power based on the first curve relationship and the second curve relationship; the first optical power is used to divide the receiving end optical power range into two ranges; among the two ranges The first range is greater than the lower limit of the receiving end optical power range and less than the first optical power; the second range of the two ranges is greater than or equal to the first optical power less than the receiving end optical power The upper limit of the power range.
  • S103 Determine a calibration method of the coherent optical module based on the first optical power; the calibration method includes: when the optical power at the receiving end of the coherent optical module is less than the first optical power, adopting The first curve relationship is used to calibrate the coherent optical module; when the optical power at the receiving end of the coherent optical module is greater than or equal to the first optical power, the second curve relationship is used to calibrate the coherent optical module.
  • the coherent optical module is calibrated.
  • the calibration method of the coherent optical module in this embodiment may be a calibration method in which the total light at the receiving end of the coherent optical module and the light of a specified wavelength are reported; wherein, the total light may be indifferent.
  • the light of the wavelength; the light of the specified wavelength may be the light of the same frequency as the local oscillator light source at the receiving end of the coherent optical module, and the light of the specified wavelength is also called Colorless light.
  • FIG. 2 is a schematic structural diagram of a coherent optical module provided by an embodiment of the present disclosure.
  • the coherent optical module includes an integrated coherent receiver (Integrated Coherent Receiver (ICR), Digital Signal Processor (DSP), and local oscillator light source; when the input signal light at the receiving end of the coherent optical module has the same frequency as the local oscillator light source in the coherent optical module, Through the internal mixing and photoelectric conversion of the coherent receiver, the optical signal is converted and demodulated into an electrical signal.
  • the amplitude of the electrical signal may include useful information carried by the optical signal.
  • the amplitude of the electrical signal needs to match the input amplitude requirement of the DSP.
  • the integrated coherent receiver is generally set to the automatic gain control mode (Automatic Gain Control, AGC).
  • AGC Automatic Gain Control
  • Fig. 3 is a schematic structural diagram of the coherent optical module provided by an embodiment of the present disclosure in the automatic gain control mode.
  • the detection circuit is used to detect the output of the integrated coherent receiver.
  • the central control processor timely reads the amplitude value that measures the output voltage of the integrated coherent receiver in the coherent optical module, and compares the amplitude value with the target setting value.
  • the central control processor will reduce the target setting value, so that the amplitude value of the ICR output voltage decreases; anyway, increase the target setting value, so that the amplitude value of the ICR output voltage increases.
  • the corresponding receiving end optical power range of the coherent optical module is related to the model or specification of the coherent optical module.
  • the coherent optical module corresponds to the receiving end optical power range It's ok.
  • the corresponding receiving end optical power range of the coherent optical module may be -22 dBm to +1 dBm.
  • the “first” and “second” mentioned here are only used to distinguish the curve relationship, and do not limit the present disclosure.
  • the first curve relationship may be a corresponding relationship between the reported voltage of the power gain within the optical power range of the receiving end corresponding to the coherent optical module and the optical power of the receiving end.
  • the corresponding relationship may be a curve constructed in a coordinate system between the power gain reported voltage and the receiving end optical power within the corresponding receiving end optical power range of the coherent optical module.
  • the second curve relationship may be a corresponding relationship between the target setting voltage and the optical power of the receiving end within the optical power range of the corresponding receiving end of the coherent optical module.
  • the corresponding relationship may be a curve constructed in a coordinate system between the target setting voltage and the receiving end optical power within the corresponding receiving end optical power range of the coherent optical module.
  • Determining the first optical power based on the first curve relationship and the second curve relationship may be determining the corresponding first optical power according to the intersection of the first curve relationship and the second curve relationship, and the first optical power Power divides the receiving end optical power range into a first range greater than the lower limit of the receiving end optical power range and smaller than the first optical power and greater than or equal to the first optical power being less than the receiving end optical power
  • the first range of the upper limit of the range; or the first optical power divides the receiving end optical power range into a first range greater than the lower limit of the receiving end optical power range and less than or equal to the first optical power
  • the range sum is greater than the first range where the first optical power is smaller than the upper limit of the receiving end optical power range.
  • the "first" and “second” are only used to distinguish two ranges, and do not limit the present disclosure.
  • FIG. 4 is a schematic diagram of the first curve relationship and the second curve relationship in the coherent optical module provided by an embodiment of the present disclosure.
  • the curve of the power gain reported voltage and the receiving end optical power in the coordinate system within the corresponding receiving end optical power range of the coherent optical module and the corresponding receiving end optical power of the coherent optical module are constructed in the same coordinate system.
  • the coherent optical module is a BiDi optical module.
  • the corresponding receiving end optical power range of the BiDi optical module is -22dBm to +1dBm, which is the range of the receiving end optical power.
  • the lower limit is -22dBm
  • the upper limit of the optical power range at the receiving end is +1dBm.
  • the optical power corresponding to the intersection point is -12dBm
  • the receiving end optical power range is divided into two ranges (-22, -12) and [-12,+1); among them, the first range can be (-22,- 12), the first range can be [-12,+1).
  • the determination of the calibration method of the coherent optical module based on the first optical power may be to determine whether the receiving end optical power of the coherent optical module is less than the first optical power; at the receiving end optical power of the coherent optical module When the optical power is less than the first optical power, the first curve relationship is used to calibrate the coherent optical module; when the optical power at the receiving end of the coherent optical module is greater than or equal to the first optical power Next, use the second curve relationship to calibrate the coherent optical module.
  • the calibration is to calibrate the relationship between the electrical signal monitored and output by the coherent optical module and its corresponding input optical power, so that the electrical signal monitored and output by the coherent optical module can accurately obtain the corresponding input coherent light. Power information.
  • the first optical power is determined by the first curve relationship and the second curve relationship.
  • the first optical power is used to divide the receiving end optical power range into two ranges, and then the When the receiving end optical power of the optical module is in the first range, the first curve relationship is used to calibrate the coherent optical module; when the receiving end optical power of the coherent optical module is in the second range In the case of the range, the second curve relationship is used to calibrate the coherent optical module.
  • the calibration process does not depend on the PD.
  • the report curve obtained in the entire receiving end optical power range is calibrated by a piecewise function, thereby improving Report accuracy within the entire optical power range.
  • the calibration of the coherent optical module using the first curve relationship includes: acquiring multiple sets of first data satisfying the first curve relationship; Performing fitting processing on multiple sets of first data to obtain a first calibration function in the first range; and using the second curve relationship to calibrate the coherent optical module includes: obtaining the first calibration function that satisfies the first Multiple sets of second data in a two-curve relationship; fitting processing is performed on the multiple sets of second data to obtain a second calibration function in the second range.
  • Performing fitting processing on the multiple sets of first data to obtain the first calibration function in the first range may be performing n (n greater than or equal to 1) order polynomial fitting on multiple sets of first data to obtain the A polynomial of order n (n is greater than or equal to 1) in the first range.
  • n-order polynomial fitting can be a third-order polynomial fitting
  • at least three sets of first data satisfying the first curve relationship can be obtained; the three sets of first data are substituted into the third-order polynomial to perform the fitting.
  • the corresponding coefficients A, B, C, and D obtained by fitting are obtained, and then the first calibration function in the first range is obtained, and stored in the coherent optical module;
  • the n-order polynomial fitting can be four In the case of the first-order polynomial fitting, at least four sets of first data satisfying the first curve relationship can be obtained; the four sets of first data are substituted into the fourth-order polynomial for fitting, and the corresponding coefficients obtained by fitting are obtained A, B, C, D, E, and then obtain the first scaling function in the first range.
  • the first range may be (-22, -12).
  • the "multiple sets of second data" mentioned here can be any multiple sets of data satisfying the second curve relationship.
  • Performing fitting processing on the multiple sets of second data to obtain the second calibration function in the second range may be performing n (n greater than or equal to 1) order polynomial fitting on multiple sets of second data to obtain the A polynomial of order n (n is greater than or equal to 1) in the second range.
  • n-order polynomial fitting can be a third-order polynomial fitting
  • at least three sets of second data satisfying the second curve relationship can be obtained; the three sets of second data are substituted into the third-order polynomial to perform the fitting.
  • the second calibration function in the second range is obtained; in the case that the n-th order polynomial fitting can be the fourth-order polynomial fitting, it can be At least four sets of second data satisfying the second curve relationship are acquired; the four sets of second data are substituted into the fourth-order polynomial for fitting, and the corresponding coefficients A, B, C, D, and E obtained from the fitting are obtained , And then obtain the first scaling function in the second range.
  • the second range may be [-12, +1).
  • the obtaining the first curve relationship and the second curve relationship includes: adjusting the optical power of the incident light within the optical power range of the corresponding receiving end of the coherent optical module, Each beam of incident light after adjustment is subjected to spectroscopic processing to obtain the first incident light and the second incident light corresponding to each incident light; the incident light is the light beam received by the receiving end of the coherent optical module; The optical power corresponding to the first incident light corresponding to the incident light; obtain the power gain corresponding to the second incident light corresponding to each incident light; report the voltage and target setting voltage; according to the optical power corresponding to the first incident light corresponding to the same incident light The power gain report voltage corresponding to the second incident light determines the first curve relationship; the second curve is determined according to the optical power corresponding to the first incident light corresponding to the same incident light and the target setting voltage corresponding to the second incident light relation.
  • adjusting the optical power of the incident light may be adjusting the optical power of the transmitting end of the incident light, so that the optical power of the light beam received by the receiving end of the coherent optical module is at the The coherent optical module changes within the corresponding receiving end optical power range.
  • adjusting the optical power of the emitting end of the incident light may be by adjusting the optical power of the emitting end of the light source.
  • each beam of incident light after adjustment is subjected to spectroscopic processing to obtain the first incident light and the second incident light corresponding to each beam of incident light.
  • Each beam of incident light after adjustment may enter the beam splitter for spectroscopic processing to obtain each beam.
  • the incident light corresponds to the first incident light and the second incident light.
  • the beam splitter is used to enter half (50%) of the adjusted incident light (that is, the first incident light corresponding to each incident light) into the optical power meter, so as to facilitate obtaining the corresponding incident light of each incident light.
  • the optical power corresponding to the first incident light; and half (50%) of the adjusted incident light (that is, the second incident light corresponding to each incident light) into the coherent optical module to facilitate obtaining each incident light The power gain report voltage and the target setting voltage corresponding to the second incident light corresponding to the beam of incident light.
  • the determination of the first curve relationship according to the reported voltage of the optical power corresponding to the first incident light and the power gain corresponding to the second incident light corresponding to the same incident light can be understood as the optical power corresponding to the first incident light and the second incident light
  • the corresponding optical power is the same, the optical power corresponding to the first incident light can be directly read through the optical power meter, that is, the optical power corresponding to the second incident light;
  • the optical power corresponding to the first incident light and the power gain report voltage corresponding to the second incident light determine the corresponding relationship between each optical power and the power gain reported voltage corresponding to each optical power, and construct the multiple corresponding relationships The first curve relationship.
  • the optical power corresponding to the first incident light and the power gain corresponding to the second incident light read by the optical power meter each time can be reported as voltages to form coordinates to obtain multiple sets of coordinates.
  • the group coordinates draw points in the coordinate system to construct the first curve relationship.
  • the second curve relationship is determined according to the optical power corresponding to the first incident light corresponding to the same incident light and the target setting voltage corresponding to the second incident light. It can be understood that the optical power corresponding to the first incident light corresponds to the second incident light.
  • the optical power is the same, the optical power corresponding to the first incident light can be directly read through the optical power meter, that is, the optical power corresponding to the second incident light;
  • the optical power corresponding to the first incident light and the target setting voltage corresponding to the second incident light determine the corresponding relationship between each optical power and the target setting voltage corresponding to each optical power, and construct the second curve from a plurality of the corresponding relationships relation.
  • the optical power corresponding to the first incident light and the target setting voltage corresponding to the second incident light read by the optical power meter each time can be formed into coordinates to obtain multiple sets of coordinates.
  • the coordinates draw points in the coordinate system to construct the second curve relationship.
  • FIG. 5 is a schematic structural diagram of a coherent optical module provided by an embodiment of the present disclosure for calibration, as shown in FIG. 5,
  • the second incident light then the first incident light enters the optical power meter to read the optical power corresponding to the first incident light; the second incident light enters the coherent optical module to obtain each incident The power gain report voltage corresponding to the second incident light corresponding to the light and the target setting voltage; and then the first incident light corresponding to the same incident light corresponding to the optical power corresponding to the first incident light and the power gain report voltage corresponding to the second incident light to determine the first Curve relationship; the second curve relationship is determined according to the optical power corresponding to the first incident light corresponding to the same incident light and the target setting voltage corresponding to the second incident light.
  • the obtaining the first curve relationship and the second curve relationship includes: performing attenuation processing on the optical power of the incident light within the optical power range of the corresponding receiving end of the coherent optical module, Each attenuated incident light is subjected to spectroscopic processing to obtain the first incident light and the second incident light corresponding to each incident light; the incident light is the light beam received by the receiving end of the coherent optical module; The optical power corresponding to the first incident light corresponding to the incident light; obtain the power gain corresponding to the second incident light corresponding to each incident light; report the voltage and target setting voltage; according to the optical power corresponding to the first incident light corresponding to the same incident light The power gain report voltage corresponding to the second incident light determines the first curve relationship; the second curve is determined according to the optical power corresponding to the first incident light corresponding to the same incident light and the target setting voltage corresponding to the second incident light relation.
  • performing attenuation processing on the optical power of incident light may be an operation of adjusting the amount of optical attenuation through a variable optical attenuator (VOA) to achieve the purpose of automatically adjusting the optical power.
  • VOA variable optical attenuator
  • Each attenuated incident light is subjected to spectroscopic processing to obtain the first incident light and second incident light corresponding to each incident light.
  • Each incident light after adjustment can enter the beam splitter for spectroscopic processing to obtain each incident light.
  • the incident light corresponds to the first incident light and the second incident light.
  • the beam splitter is used to enter half (50%) of the adjusted incident light (that is, the first incident light corresponding to each incident light) into the optical power meter, so as to facilitate obtaining the corresponding incident light of each incident light.
  • the optical power corresponding to the first incident light; and half (50%) of the adjusted incident light (that is, the second incident light corresponding to each incident light) into the coherent optical module to facilitate obtaining each incident light The power gain report voltage and the target setting voltage corresponding to the second incident light corresponding to the beam of incident light.
  • the determination of the first curve relationship according to the reported voltage of the optical power corresponding to the first incident light and the power gain corresponding to the second incident light corresponding to the same incident light can be understood as the optical power corresponding to the first incident light and the second incident light
  • the corresponding optical power is the same, the optical power corresponding to the first incident light can be directly read through the optical power meter, that is, the optical power corresponding to the second incident light;
  • the optical power corresponding to the first incident light and the power gain report voltage corresponding to the second incident light determine the corresponding relationship between each optical power and the power gain reported voltage corresponding to each optical power, and construct the multiple corresponding relationships The first curve relationship.
  • the optical power corresponding to the first incident light and the power gain corresponding to the second incident light read by the optical power meter each time can be reported as voltages to form coordinates to obtain multiple sets of coordinates.
  • the group coordinates draw points in the coordinate system to construct the first curve relationship.
  • the second curve relationship is determined according to the optical power corresponding to the first incident light corresponding to the same incident light and the target setting voltage corresponding to the second incident light. It can be understood that the optical power corresponding to the first incident light corresponds to the second incident light.
  • the optical power is the same, the optical power corresponding to the first incident light can be directly read through the optical power meter, that is, the optical power corresponding to the second incident light;
  • the optical power corresponding to the first incident light and the target setting voltage corresponding to the second incident light determine the corresponding relationship between each optical power and the target setting voltage corresponding to each optical power, and construct the second curve from a plurality of the corresponding relationships relation.
  • the optical power corresponding to the first incident light and the target setting voltage corresponding to the second incident light read by the optical power meter each time can be formed into coordinates to obtain multiple sets of coordinates.
  • the coordinates draw points in the coordinate system to construct the second curve relationship.
  • FIG. 6 is another schematic structural diagram of a coherent optical module provided by an embodiment of the present disclosure for calibration, as shown in FIG.
  • the operation of adjusting the amount of light attenuation through a variable optical attenuator is required in Figure 6, and each attenuated incident light enters the beam splitter for optical processing to obtain the first incident light and the first incident light corresponding to each incident light.
  • Two incident light then enter the first incident light into the optical power meter to read the optical power corresponding to the first incident light; enter the second incident light into the coherent optical module to obtain the corresponding light of each incident light
  • the power gain report voltage corresponding to the second incident light and the target setting voltage and then the first curve relationship is determined according to the optical power corresponding to the first incident light corresponding to the same incident light and the power gain report voltage corresponding to the second incident light
  • the second curve relationship is determined according to the optical power corresponding to the first incident light corresponding to the same incident light and the target setting voltage corresponding to the second incident light.
  • light of different wavelengths can be emitted through the tunable light source 1 to the tunable light source N, and the light of all different wavelengths is transmitted to the coherent optical module, which is called the total light at the receiving end of the coherent optical module.
  • the coherent optical module also searches for light with the same frequency as the local oscillator light source of the coherent optical module, that is, Colorless light.
  • the method before the obtaining the first curve relationship and the second curve relationship, the method further includes: performing initialization processing on the coherent optical module; the initialization processing includes: The optical power of the coherent optical module corresponding to the receiving end is adjusted to the upper limit of the optical power range of the receiving end.
  • the initialization processing of the coherent optical module may adjust the VOA to adjust the corresponding receiving end optical power of the coherent optical module to the upper limit of the receiving end optical power range, So that the coherent optical module is configured and powered to achieve normal operation.
  • the first optical power is determined by the first curve relationship and the second curve relationship.
  • the first optical power is used to divide the receiving end optical power range into two ranges, and then the When the receiving end optical power of the optical module is in the first range, the first curve relationship is used to calibrate the coherent optical module; when the receiving end optical power of the coherent optical module is in the second range In the case of the range, the second curve relationship is used to calibrate the coherent optical module.
  • the calibration process does not depend on the PD.
  • the report curve obtained in the entire receiving end optical power range is calibrated by a piecewise function, thereby improving Report accuracy within the entire optical power range.
  • FIG. 7 is a schematic structural diagram of a calibration device for a coherent optical module provided by an embodiment of the disclosure.
  • the device 20 includes: an obtaining unit 201, a determining unit 202, and a calibration unit 203, of which:
  • the obtaining unit 201 is configured to obtain a first curve relationship and a second curve relationship; the first curve relationship represents the relationship between the power gain reported voltage and the receiving end optical power within the corresponding receiving end optical power range of the coherent optical module; The power gain reported voltage is used to measure the voltage amplitude output by the integrated coherent receiver in the coherent optical module; the second curve relationship represents the target setting voltage and the receiving end optical power range within the corresponding receiving end optical power range of the coherent optical module. Power relationship; the target setting voltage is used to adjust the voltage amplitude output by the integrated coherent receiver in the coherent optical module;
  • the determining unit 202 is configured to determine a first optical power based on the first curve relationship and the second curve relationship obtained by the obtaining unit; the first optical power is used to use the receiving end optical power range Divided into two ranges; the first range of the two ranges is greater than the lower limit of the receiving end optical power range and smaller than the first optical power; the second range of the two ranges is greater than or equal to The first optical power is less than the upper limit of the receiving end optical power range;
  • the calibration unit 203 is configured to determine a calibration method of the coherent optical module based on the first optical power determined by the determining unit; When the power is in the first range, use the first curve relationship to calibrate the coherent optical module; when the optical power at the receiving end of the coherent optical module is in the second range, use The second curve relationship performs calibration on the coherent optical module.
  • the calibration unit 203 is further configured to obtain multiple sets of first data satisfying the first curve relationship; perform fitting processing on the multiple sets of first data to obtain the first range And obtain a plurality of sets of second data satisfying the second curve relationship; perform fitting processing on the plurality of sets of second data to obtain a second calibration function in the second range .
  • the obtaining unit 201 is further configured to adjust the optical power of the incident light within the optical power range of the corresponding receiving end of the coherent optical module, and perform splitting of each incident light after adjustment.
  • obtain the first incident light and the second incident light corresponding to each incident light the incident light is the light beam received by the receiving end of the coherent optical module; obtain the light corresponding to the first incident light corresponding to each incident light Power; obtain the power gain report voltage and target setting voltage corresponding to the second incident light corresponding to each incident light; report the voltage according to the optical power corresponding to the first incident light corresponding to the same incident light and the power gain corresponding to the second incident light
  • the first curve relationship is determined; the second curve relationship is determined according to the optical power corresponding to the first incident light corresponding to the same incident light and the target setting voltage corresponding to the second incident light.
  • the obtaining unit 201 is further configured to perform attenuation processing on the optical power of the incident light within the optical power range of the corresponding receiving end of the coherent optical module, and perform splitting of each attenuated incident light Process, obtain the first incident light and the second incident light corresponding to each incident light; the incident light is the light beam received by the receiving end of the coherent optical module; obtain the light corresponding to the first incident light corresponding to each incident light Power; obtain the power gain report voltage and target setting voltage corresponding to the second incident light corresponding to each incident light; report the voltage according to the optical power corresponding to the first incident light corresponding to the same incident light and the power gain corresponding to the second incident light
  • the first curve relationship is determined; the second curve relationship is determined according to the optical power corresponding to the first incident light corresponding to the same incident light and the target setting voltage corresponding to the second incident light.
  • the device 20 further includes: a processing unit configured to perform initialization processing on the coherent optical module; the initialization processing includes: adjusting the optical power of the receiving end corresponding to the coherent optical module to the receiving end The upper limit of the optical power range.
  • the embodiment of the present disclosure provides a calibration device for a coherent optical module, which also determines a first optical power based on a first curve relationship and a second curve relationship, and the first optical power is used to divide the receiving end optical power range into Two ranges, and then when the optical power of the receiving end of the coherent optical module is in the first range, the first curve relationship is used to calibrate the coherent optical module; When the receiving end optical power is in the second range, the second curve relationship is used to calibrate the coherent optical module.
  • the calibration process does not depend on the PD, and the entire receiving end optical power is calibrated through a piecewise function The reporting curve obtained within the range, thereby improving the reporting accuracy within the entire optical power range.
  • some terms in the calibration device of the aforementioned coherent optical module have been explained in the aforementioned calibration method of the coherent optical module, and will not be repeated here.
  • the present disclosure provides a computer-readable medium on which a computer program is stored.
  • the steps of the above method embodiment are implemented, and the foregoing storage medium includes: a mobile storage device, a read-only memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disks or optical disks and other media that can store program codes.
  • ROM read-only memory
  • RAM Random Access Memory
  • magnetic disks or optical disks and other media that can store program codes.
  • the embodiment of the present disclosure also provides a calibration device for a coherent optical module, including: a processor and a memory for storing a computer program that can run on the processor, wherein, when the processor is used to run the computer program, The steps of the above method embodiment stored in the memory are executed.
  • FIG. 8 is a schematic diagram of the hardware structure of a calibration device of a coherent optical module according to an embodiment of the present disclosure.
  • the calibration device 30 of the coherent optical module includes: at least one processor 301 and a memory 302; optionally, the coherent optical module
  • the calibration device 30 of the coherent optical module can also include at least one communication interface 303; the various components in the calibration device 30 of the coherent optical module can be coupled together through the bus system 304. It is understandable that the bus system 304 is used to realize the connection between these components. Communication.
  • the bus system 304 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clear description, various buses are marked as the bus system 304 in FIG. 8.
  • the memory 302 may be a volatile memory or a non-volatile memory, and may also include both volatile and non-volatile memory.
  • the non-volatile memory can be a read-only memory (ROM, Read Only Memory), a programmable read-only memory (PROM, Programmable Read-Only Memory), an erasable programmable read-only memory (EPROM, Erasable Programmable Read- Only Memory, Electrically Erasable Programmable Read-Only Memory (EEPROM, Electrically Erasable Read-Only Memory), magnetic random access memory (FRAM, ferromagnetic random access memory), flash memory (Flash Memory), magnetic surface memory , CD-ROM, or CD-ROM (Compact Disc Read-Only Memory); magnetic surface memory can be magnetic disk storage or tape storage.
  • the volatile memory may be a random access memory (RAM, Random Access Memory), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • SSRAM synchronous static random access memory
  • Synchronous Static Random Access Memory Synchronous Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • SDRAM Synchronous Dynamic Random Access Memory
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SLDRAM synchronous connection dynamic random access memory
  • DRRAM Direct Rambus Random Access Memory
  • the memory 302 described in the embodiments of the present disclosure is intended to include, but is not limited to, these and any other suitable types of memory.
  • the memory 302 in the embodiment of the present disclosure is used to store various types of data to support the operation of the calibration device 30 of the coherent optical module. Examples of these data include: any computer program used to operate on the calibration device 30 of the coherent optical module, such as obtaining a mileage range based on the first image and the second image to determine the defect of the tunnel lining to be inspected Etc., a program that implements the method of the embodiment of the present disclosure may be contained in the memory 302.
  • the methods disclosed in the foregoing embodiments of the present disclosure may be applied to the processor 301 or implemented by the processor 301.
  • the processor 301 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the processor 301 or instructions in the form of software.
  • the aforementioned processor 301 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and the like.
  • the processor 301 may implement or execute various methods, steps, and logical block diagrams disclosed in the embodiments of the present disclosure.
  • the general-purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present disclosure can be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a storage medium, and the storage medium is located in the memory 302.
  • the processor 301 reads the information in the memory and completes the steps of the foregoing method in combination with its hardware.
  • the calibration device 30 of the coherent optical module can be implemented by one or more Application Specific Integrated Circuits (ASIC, Application Specific Integrated Circuit), DSP, Programmable Logic Device (PLD, Programmable Logic Device), complex Programming logic device (CPLD, Complex Programmable Logic Device), Field-Programmable Gate Array (FPGA, Field-Programmable Gate Array), general-purpose processor, controller, microcontroller (MCU, Micro Controller Unit), microprocessor (Microprocessor) ), or other electronic components to implement the above method.
  • ASIC Application Specific Integrated Circuit
  • DSP Programmable Logic Device
  • PLD Programmable Logic Device
  • CPLD Complex Programmable Logic Device
  • FPGA Field-Programmable Gate Array
  • general-purpose processor controller, microcontroller (MCU, Micro Controller Unit), microprocessor (Microprocessor)
  • MCU Micro Controller Unit
  • Microprocessor Microprocessor
  • the disclosed device and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, such as: multiple units or components can be combined, or It can be integrated into another system, or some features can be ignored or not implemented.
  • the coupling, or direct coupling, or communication connection between the components shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms. of.
  • the units described above as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units; Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • the functional units in the embodiments of the present disclosure can be all integrated into one processing unit, or each unit can be individually used as a unit, or two or more units can be integrated into one unit; the above-mentioned integration
  • the unit of can be implemented in the form of hardware, or in the form of hardware plus software functional units.
  • a person of ordinary skill in the art can understand that all or part of the steps in the above method embodiments can be implemented by a program instructing relevant hardware.
  • the foregoing program can be stored in a computer readable storage medium. When the program is executed, the program is executed. Including the steps of the foregoing method embodiment; and the foregoing storage medium includes: removable storage devices, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disks or optical disks, etc.
  • ROM read-only memory
  • RAM Random Access Memory
  • magnetic disks or optical disks etc.
  • the aforementioned integrated unit of the present disclosure is implemented in the form of a software function module and sold or used as an independent product, it may also be stored in a computer readable storage medium.
  • the computer software product is stored in a storage medium and includes several instructions for A computer device (which may be a personal computer, a server, or a network device, etc.) executes all or part of the methods described in the various embodiments of the present disclosure.
  • the aforementioned storage media include: removable storage devices, ROM, RAM, magnetic disks, or optical disks and other media that can store program codes.

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Abstract

一种相干光模块的定标方法、装置、设备及计算机可读存储介质，所述方法包括：获得第一曲线关系和第二曲线关系；第一曲线关系表示相干光模块对应接收端光功率范围内功率增益上报电压与接收端光功率的关系；第二曲线关系表示相干光模块对应接收端光功率范围内目标设置电压与接收端光功率的关系；基于第一曲线关系和第二曲线关系确定第一光功率；第一光功率用于将接收端光功率范围分为两个范围；基于第一光功率确定相干光模块的定标方式；定标方式包括：在相干光模块的接收端光功率在第一范围的情况下，采用第一曲线关系对相干光模块进行定标；在相干光模块的接收端光功率在第二范围的情况下，采用第二曲线关系对相干光模块进行定标。

Description

一种相干光模块的定标方法、装置、设备及计算机可读存储介质
相关申请的交叉引用
本公开基于申请号为202010590932.1、申请日为2020年6月24日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此以引入方式并入本申请。
技术领域
本公开实施例涉及光纤技术领域，尤其涉及一种相干光模块的定标方法、装置、设备及计算机可读存储介质。
背景技术
传统的相干光模块，收端总光功率上报一般采用收端光电二极管(Photo Diode，PD)上报进行标定，对于小型化的模块，放不下外置分光探测器(Tap Photo Detector，TAP-PD)，可能会使用到模块收端接收机里面集成的PD进行上报标定。对于模块收端接收机，某些厂家可能没有集成内部PD，这时候光功率标定就不能依赖PD了。如何不依赖于PD，保证整个收端光功率范围内得到的上报曲线线性，并提高整个光功率范围内上报精度。针对该问题，目前尚无有效解决方案。
发明内容
本公开的主要目的在于提供一种相干光模块的定标方法、装置、设备及计算机可读存储介质，至少可以部分解决上述技术问题。
为了达到上述目的，本公开实施例提供一种相干光模块的定标方法，所述方法包括：获得第一曲线关系和第二曲线关系；所述第一曲线关系表示所述相干光模块对应接收端光功率范围内功率增益上报电压与接收端光功率的关系； 所述功率增益上报电压用于衡量所述相干光模块中集成相干接收机输出的电压幅度；所述第二曲线关系表示所述相干光模块对应接收端光功率范围内目标设置电压与接收端光功率的关系；所述目标设置电压用于调整所述相干光模块中集成相干接收机输出的电压幅度；基于所述第一曲线关系和所述第二曲线关系确定第一光功率；所述第一光功率用于将所述接收端光功率范围分为两个范围；所述两个范围中的第一范围为大于所述接收端光功率范围的下限值小于所述第一光功率；所述两个范围中的第二范围为大于等于所述第一光功率小于所述接收端光功率范围的上限值；基于所述第一光功率确定所述相干光模块的定标方式；所述定标方式包括：在所述相干光模块的接收端光功率在所述第一范围的情况下，采用所述第一曲线关系对所述相干光模块进行定标；在所述相干光模块的接收端光功率在所述第二范围的情况下，采用所述第二曲线关系对所述相干光模块进行定标。
在本公开的一种可选实施例中，所述采用所述第一曲线关系对所述相干光模块进行定标，包括：获取满足所述第一曲线关系的多组第一数据；对所述多组第一数据进行拟合处理，获得所述第一范围内的第一定标函数；所述采用所述第二曲线关系对所述相干光模块进行定标，包括：获取满足所述第二曲线关系的多组第二数据；对所述多组第二数据进行拟合处理，获得所述第二范围内的第二定标函数。
在本公开的一种可选实施例中，所述获得第一曲线关系和第二曲线关系，包括：在所述相干光模块对应接收端光功率范围内、对入射光的光功率进行调节处理，并将调节后的每束入射光进行分光处理，获得每束入射光对应的第一入射光和第二入射光；所述入射光为所述相干光模块的接收端接收的光束；获得每束入射光对应的第一入射光对应的光功率；获得每束入射光对应的第二入射光对应的功率增益上报电压和目标设置电压；根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的功率增益上报电压确定所述第一曲线关系；根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的目标设置电压确定所述第二曲线关系。
在本公开的一种可选实施例中，所述获得第一曲线关系和第二曲线关系，包括：在所述相干光模块对应接收端光功率范围内、对入射光的光功率进行衰减处理，并将衰减后的每束入射光进行分光处理，获得每束入射光对应的第一入射光和第二入射光；所述入射光为所述相干光模块的接收端接收的光束；获得每束入射光对应的第一入射光对应的光功率；获得每束入射光对应的第二入射光对应的功率增益上报电压和目标设置电压；根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的功率增益上报电压确定所述第一曲线关系；根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的目标设置电压确定所述第二曲线关系。
在本公开的一种可选实施例中，所述获得第一曲线关系和第二曲线关系之前，所述方法还包括：对所述相干光模块进行初始化处理；所述初始化处理包括：将所述相干光模块对应接收端光功率调节至所述接收端光功率范围的上限值。
本公开实施例还提供了一种相干光模块的定标装置，所述装置包括：获得单元、确定单元和定标单元，其中：
所述获得单元，配置为获得第一曲线关系和第二曲线关系；所述第一曲线关系表示所述相干光模块对应接收端光功率范围内功率增益上报电压与接收端光功率的关系；所述功率增益上报电压用于衡量所述相干光模块中集成相干接收机输出的电压幅度；所述第二曲线关系表示所述相干光模块对应接收端光功率范围内目标设置电压与接收端光功率的关系；所述目标设置电压用于调整所述相干光模块中集成相干接收机输出的电压幅度；
所述确定单元，配置为基于所述获得单元获得的所述第一曲线关系和所述第二曲线关系确定第一光功率；所述第一光功率用于将所述接收端光功率范围分为两个范围；所述两个范围中的第一范围为大于所述接收端光功率范围的下限值小于所述第一光功率；所述两个范围中的第二范围为大于等于所述第一光功率小于所述接收端光功率范围的上限值；
所述定标单元，配置为基于所述确定单元确定的所述第一光功率确定所述 相干光模块的定标方式；所述定标方式包括：在所述相干光模块的接收端光功率在所述第一范围的情况下，采用所述第一曲线关系对所述相干光模块进行定标；在所述相干光模块的接收端光功率在所述第二范围的情况下，采用所述第二曲线关系对所述相干光模块进行定标。
在本公开的一种可选实施例中，所述定标单元，还配置为获取满足所述第一曲线关系的多组第一数据；对所述多组第一数据进行拟合处理，获得所述第一范围内的第一定标函数；以及获取满足所述第二曲线关系的多组第二数据；对所述多组第二数据进行拟合处理，获得所述第二范围内的第二定标函数。
在本公开的一种可选实施例中，所述获得单元，还配置为在所述相干光模块对应接收端光功率范围内、对入射光的光功率进行调节处理，并将调节后的每束入射光进行分光处理，获得每束入射光对应的第一入射光和第二入射光；所述入射光为所述相干光模块的接收端接收的光束；获得每束入射光对应的第一入射光对应的光功率；获得每束入射光对应的第二入射光对应的功率增益上报电压和目标设置电压；根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的功率增益上报电压确定所述第一曲线关系；根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的目标设置电压确定所述第二曲线关系。
在本公开的一种可选实施例中，所述获得单元，还配置为在所述相干光模块对应接收端光功率范围内、对入射光的光功率进行衰减处理，并将衰减后的每束入射光进行分光处理，获得每束入射光对应的第一入射光和第二入射光；所述入射光为所述相干光模块的接收端接收的光束；获得每束入射光对应的第一入射光对应的光功率；获得每束入射光对应的第二入射光对应的功率增益上报电压和目标设置电压；根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的功率增益上报电压确定所述第一曲线关系；根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的目标设置电压确定所述第二曲线关系。
在本公开的一种可选实施例中，所述装置还包括：处理单元，配置为对所 述相干光模块进行初始化处理；所述初始化处理包括：将所述相干光模块对应接收端光功率调节至所述接收端光功率范围的上限值。
本公开实施例还提供一种相干光模块的定标设备，所述相干光模块的定标设备包括：处理器和用于存储能够在处理器上运行的计算机程序的存储器，其中，所述处理器用于运行所述计算机程序时，执行上述所述方法的步骤。
本公开实施例还提供一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被至少一个处理器执行时实现上述所述方法的步骤。
本公开实施例提供一种相干光模块的定标方法、装置、设备及计算机可读存储介质，所述方法包括：获得第一曲线关系和第二曲线关系；所述第一曲线关系表示所述相干光模块对应接收端光功率范围内功率增益上报电压与接收端光功率的关系；所述功率增益上报电压用于衡量所述相干光模块中集成相干接收机输出的电压幅度；所述第二曲线关系表示所述相干光模块对应接收端光功率范围内目标设置电压与接收端光功率的关系；所述目标设置电压用于调整所述相干光模块中集成相干接收机输出的电压幅度；基于所述第一曲线关系和所述第二曲线关系确定第一光功率；所述第一光功率用于将所述接收端光功率范围分为两个范围；所述两个范围中的第一范围为大于所述接收端光功率范围的下限值小于所述第一光功率；所述两个范围中的第二范围为大于等于所述第一光功率小于所述接收端光功率范围的上限值；基于所述第一光功率确定所述相干光模块的定标方式；所述定标方式包括：在所述相干光模块的接收端光功率在所述第一范围的情况下，采用所述第一曲线关系对所述相干光模块进行定标；在所述相干光模块的接收端光功率在所述第二范围的情况下，采用所述第二曲线关系对所述相干光模块进行定标。在本公开实施例中，通过第一曲线关系和第二曲线关系确定第一光功率，所述第一光功率用于将所述接收端光功率范围分为两个范围，进而在所述相干光模块的接收端光功率在所述第一范围的情况下，采用所述第一曲线关系对所述相干光模块进行定标；在所述相干光模块的接收端光功率在所述第二范围的情况下，采用所述第二曲线关系对所述相干光模块进行定标，该定标过程不依赖于PD，通过分段函数标定整个收端光功率范 围内得到的上报曲线，从而提高整个光功率范围内上报精度。
附图说明
图1为本公开实施例提供的相干光模块的定标方法的流程示意图；
图2为采用本公开实施例提供的相干光模块的结构示意图；
图3为采用本公开实施例提供的相干光模块在自动增益控制模式下的结构示意图；
图4为采用本公开实施例提供的相干光模块中第一曲线关系和第二曲线关系的示意图；
图5为采用本公开实施例提供的相干光模块进行定标的结构示意图；
图6为采用本公开实施例提供的相干光模块进行定标的又一种结构示意图；
图7为本公开实施例提供的一种相干光模块的定标装置的结构示意图；
图8为本公开实施例提供的相干光模块的定标设备的一种硬件结构示意图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例中的附图，对公开的具体技术方案做进一步详细描述。以下实施例配置为说明本公开，但不用来限制本公开的范围。
下面结合附图及具体实施例对本公开作进一步详细的说明。
如图1所示，其示出本公开实施例提供的相干光模块的定标方法流程示意图。该方法包括：
S101：获得第一曲线关系和第二曲线关系；所述第一曲线关系表示所述相干光模块对应接收端光功率范围内功率增益上报电压与接收端光功率的关系；所述功率增益上报电压用于衡量所述相干光模块中集成相干接收机输出的电压幅度；所述第二曲线关系表示所述相干光模块对应接收端光功率范围内目标设 置电压与接收端光功率的关系；所述目标设置电压用于调整所述相干光模块中集成相干接收机输出的电压幅度。
S102：基于所述第一曲线关系和所述第二曲线关系确定第一光功率；所述第一光功率用于将所述接收端光功率范围分为两个范围；所述两个范围中的第一范围为大于所述接收端光功率范围的下限值小于所述第一光功率；所述两个范围中的第二范围为大于等于所述第一光功率小于所述接收端光功率范围的上限值。
S103：基于所述第一光功率确定所述相干光模块的定标方式；所述定标方式包括：在所述相干光模块的接收端光功率小于所述第一光功率的情况下，采用所述第一曲线关系对所述相干光模块进行定标；在所述相干光模块的接收端光功率大于或等于所述第一光功率的情况下，采用所述第二曲线关系对所述相干光模块进行定标。
需要说明的是，本实施例中所述相干光模块的定标方法可以是所述相干光模块接收端的总光和指定波长的光上报的定标方法；其中，所述总光可以为不分波长的光；所述指定波长的光可以为与所述相干光模块接收端的本振光源同频率的光，该指定波长的光也称为Colorless光。
为了方便理解，这里示例出一种相干光模块的结构示意图，图2为采用本公开实施例提供的相干光模块的结构示意图，如图2所示，所述相干光模块包括集成相干接收机(Integrated Coherent Receiver，ICR)、数字信号处理器(Digital Signal Processor，DSP)、本振光源；当所述相干光模块接收端输入信号光与所述相干光模块中本振光源同频的情况下，通过相干接收机内部混频和光电转换，由光信号转化解调为电信号，该电信号的幅度可以包括光信号承载的有用信息，该电信号的幅度需要匹配DSP对输入幅度的要求。
为了满足电信号的幅度匹配DSP对输入幅度的要求，集成相干接收机一般设定为自动增益控制模式(Automatic Gain Control，AGC),为了方便理解，这里示例出一种相干光模块在自动增益控制模式下的结构示意图，图3为采用本公开实施例提供的相干光模块在自动增益控制模式下的结构示意图，如图3所 示，在AGC模式下，检波电路用于检测集成相干接收机输出的电压幅度，中控处理器适时读取衡量所述相干光模块中集成相干接收机输出电压的幅度值，将该幅度值与目标设置值对比，如果输入所述相干光模块的光功率太大，则中控处理器会减小目标设置值，使得ICR输出电压的幅度值减少；反正，则增加目标设置值，使得ICR输出电压的幅度值增加。
需要说明的是，相干光模块对应接收端光功率范围与所述相干光模块的型号或规格有关，一般当所述相干光模块的型号或规格确定，所述相干光模块对应接收端光功率范围也就确定。为了方便理解，这里示例说明，当所述相干光模块为单纤双向光模块(Bidirectional，BiDi)的情况下，所述相干光模块对应接收端光功率范围可以为-22dBm至+1dBm。
这里所说的“第一”和“第二”仅是用于区分曲线关系，不用做限制本公开。第一曲线关系可以为所述相干光模块对应接收端光功率范围内功率增益上报电压与接收端光功率的一种对应关系。作为一种示例，该对应关系可以为所述相干光模块对应接收端光功率范围内功率增益上报电压与接收端光功率在坐标系下构建的曲线。第二曲线关系可以为所述相干光模块对应接收端光功率范围内目标设置电压与接收端光功率的一种对应关系。作为一种示例，该对应关系可以为所述相干光模块对应接收端光功率范围内目标设置电压与接收端光功率在坐标系下构建的曲线。
基于所述第一曲线关系和所述第二曲线关系确定第一光功率可以为根据所述第一曲线关系和所述第二曲线关系的交点确定对应的第一光功率，所述第一光功率将所述接收端光功率范围分为大于所述接收端光功率范围的下限值小于所述第一光功率的第一范围和大于等于所述第一光功率小于所述接收端光功率范围的上限值的第一范围；或者所述第一光功率将所述接收端光功率范围分为大于所述接收端光功率范围的下限值小于等于所述第一光功率的第一范围和大于所述第一光功率小于所述接收端光功率范围的上限值的第一范围。其中，所说的“第一”和“第二”仅是用于区分两个范围，不用做限制本公开。
为了方便理解，这里示例出一种相干光模块中第一曲线关系和第二曲线关 系的示意图，图4为采用本公开实施例提供的相干光模块中第一曲线关系和第二曲线关系的示意图，如图4所示，在同一坐标系中构建所述相干光模块对应接收端光功率范围内功率增益上报电压与接收端光功率在坐标系下的曲线和所述相干光模块对应接收端光功率范围内目标设置电压与接收端光功率的曲线，所述相干光模块为BiDi光模块，该BiDi光模块对应接收端光功率范围为-22dBm至+1dBm，即所述接收端光功率范围的下限值为-22dBm，所述接收端光功率范围的上限值为+1dBm，在-22dBm至+1dBm之间，所述第一曲线关系和所述第二曲线关系存在唯一交点，该唯一交点对应的光功率为-12dBm，将所述接收端光功率范围分为(-22，-12)、[-12,+1)两个范围；其中，第一范围可以为(-22，-12)，第一范围可以为[-12,+1)。
基于所述第一光功率确定所述相干光模块的定标方式可以为判断所述相干光模块的接收端光功率是否小于所述第一光功率；在所述相干光模块的接收端光功率小于所述第一光功率的情况下，采用所述第一曲线关系对所述相干光模块进行定标；在所述相干光模块的接收端光功率大于或等于所述第一光功率的情况下，采用所述第二曲线关系对所述相干光模块进行定标。其中，所述定标就是对相干光模块监测输出的电信号与其对应的输入光功率之间的关系进钉标定，使得通过相干光模块监测输出的电信号可以准确地获取与其对应的输入相干光功率信息。
在本公开实施例中，通过第一曲线关系和第二曲线关系确定第一光功率，所述第一光功率用于将所述接收端光功率范围分为两个范围，进而在所述相干光模块的接收端光功率在所述第一范围的情况下，采用所述第一曲线关系对所述相干光模块进行定标；在所述相干光模块的接收端光功率在所述第二范围的情况下，采用所述第二曲线关系对所述相干光模块进行定标，该定标过程不依赖于PD，通过分段函数标定整个收端光功率范围内得到的上报曲线，从而提高整个光功率范围内上报精度。
在本公开一种可选实施例中，所述采用所述第一曲线关系对所述相干光模块进行定标，包括：获取满足所述第一曲线关系的多组第一数据；对所述多组 第一数据进行拟合处理，获得所述第一范围内的第一定标函数；所述采用所述第二曲线关系对所述相干光模块进行定标，包括：获取满足所述第二曲线关系的多组第二数据；对所述多组第二数据进行拟合处理，获得所述第二范围内的第二定标函数。
需要说明的是，这里所说的“多组第一数据”可以为任何地满足所述第一曲线关系的多组数据。对所述多组第一数据进行拟合处理，获得所述第一范围内的第一定标函数可以为对多组第一数据进行n(n大于等于1)阶多项式拟合，获得所述第一范围内的n(n大于等于1)阶多项式。作为一种示例，对多组第一数据进行n(n大于等于1)阶多项式拟合，其中，n阶多项式拟合可以为三阶多项式拟合或四阶多项式拟合，例如y＝Ax 3+Bx 2+Cx+D(A不等于零)或y＝Ax 4+Bx 3+Cx 2+Dx+E(A不等于零)。在n阶多项式拟合可以为三阶多项式拟合的情况下，可以至少获取满足所述第一曲线关系的三组第一数据；将所述三组第一数据代入所述三阶多项式进行拟合，获得拟合所得的相应系数A、B、C、D，进而获得所述第一范围内的第一定标函数，存储在所述相干光模块中；在n阶多项式拟合可以为四阶多项式拟合的情况下，可以至少获取满足所述第一曲线关系的四组第一数据；将所述四组第一数据代入所述四阶多项式进行拟合，获得拟合所得的相应系数A、B、C、D、E，进而获得所述第一范围内的第一定标函数。作为一种示例，所述第一范围可以为(-22，-12)。
这里所说的“多组第二数据”可以为任何地满足所述第二曲线关系的多组数据。对所述多组第二数据进行拟合处理，获得所述第二范围内的第二定标函数可以为对多组第二数据进行n(n大于等于1)阶多项式拟合，获得所述第二范围内的n(n大于等于1)阶多项式。作为一种示例，对多组第二数据进行n(n大于等于1)阶多项式拟合，其中，n阶多项式拟合可以为三阶多项式拟合或四阶多项式拟合，例如y＝Ax 3+Bx 2+Cx+D(A不等于零)或y＝Ax 4+Bx 3+Cx 2+Dx+E(A不等于零)。在n阶多项式拟合可以为三阶多项式拟合的情况下，可以至少获取满足所述第二曲线关系的三组第二数据；将所述三组第二数据代入所述三 阶多项式进行拟合，获得拟合所得的相应系数A、B、C、D，进而获得所述第二范围内的第二定标函数；在n阶多项式拟合可以为四阶多项式拟合的情况下，可以至少获取满足所述第二曲线关系的四组第二数据；将所述四组第二数据代入所述四阶多项式进行拟合，获得拟合所得的相应系数A、B、C、D、E，进而获得所述第二范围内的第一定标函数。作为一种示例，所述第二范围可以为[-12,+1)。
在本公开实施例中，通过获取满足所述第一曲线关系的多组第一数据；对所述多组第一数据进行拟合处理，获得所述第一范围内的第一定标函数；以及获取满足所述第二曲线关系的多组第二数据；对所述多组第二数据进行拟合处理，获得所述第二范围内的第二定标函数，该定标过程不依赖于PD，以采用分段函数标定整个收端光功率范围内得到的上报曲线，从而提高整个光功率范围内上报精度。
在本公开一种可选实施例中，所述获得第一曲线关系和第二曲线关系，包括：在所述相干光模块对应接收端光功率范围内、对入射光的光功率进行调节处理，并将调节后的每束入射光进行分光处理，获得每束入射光对应的第一入射光和第二入射光；所述入射光为所述相干光模块的接收端接收的光束；获得每束入射光对应的第一入射光对应的光功率；获得每束入射光对应的第二入射光对应的功率增益上报电压和目标设置电压；根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的功率增益上报电压确定所述第一曲线关系；根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的目标设置电压确定所述第二曲线关系。
需要说明的是，本公开实施例中，对入射光的光功率进行调节处理可以为调节入射光的发射端光功率，以使所述相干光模块的接收端接收的光束的光功率在所述相干光模块对应接收端光功率范围内发生变化。其中，调节入射光的发射端光功率可以为通过调节光源的发射端光功率。
并将调节后的每束入射光进行分光处理，获得每束入射光对应的第一入射光和第二入射光可以为并将调节后的每束入射光进入分光器进行分光处理，获 得每束入射光对应的第一入射光和第二入射光。其中，所述分光器用于将调节后的每束入射光的一半(50％)入射光(即每束入射光对应的第一入射光)进入光功率计，以方便获得每束入射光对应的第一入射光对应的光功率；以及将调节后的每束入射光的一半(50％)入射光(即每束入射光对应的第二入射光)进入所述相干光模块，以方便获得每束入射光对应的第二入射光对应的功率增益上报电压和目标设置电压。
根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的功率增益上报电压确定所述第一曲线关系可以理解为由于第一入射光对应的光功率和第二入射光对应的光功率相同，通过所述光功率计可以直接读取所述第一入射光对应的光功率，即所述第二入射光对应的光功率；根据分别通过所述光功率计读取所述第一入射光对应的光功率以及第二入射光对应的功率增益上报电压确定每个光功率与每个光功率对应的功率增益上报电压的对应关系，将多个所述对应关系构建所述第一曲线关系。作为一种示例，可以将所述光功率计每次读取的所述第一入射光对应的光功率以及第二入射光对应的功率增益上报电压组成坐标，以获得多组坐标，将该多组坐标在坐标系中描点，以构建所述第一曲线关系。
根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的目标设置电压确定所述第二曲线关系可以理解为由于第一入射光对应的光功率和第二入射光对应的光功率相同，通过所述光功率计可以直接读取所述第一入射光对应的光功率，即所述第二入射光对应的光功率；根据分别通过所述光功率计读取所述第一入射光对应的光功率以及第二入射光对应的目标设置电压确定每个光功率与每个光功率对应的目标设置电压的对应关系，将多个所述对应关系构建所述第二曲线关系。作为一种示例，可以将所述光功率计每次读取的所述第一入射光对应的光功率以及第二入射光对应的目标设置电压组成坐标，以获得多组坐标，将该多组坐标在坐标系中描点，以构建所述第二曲线关系。
在实际应用中，为了方便理解，这里示例出一种相干光模块进行定标的结构示意图，图5为采用本公开实施例提供的相干光模块进行定标的结构示意图， 如图5所示，在图5的(a)-(c)中均需要调节可调光源的发射端光功率，并将调节后的每束入射光进入分光器光处理，获得每束入射光对应的第一入射光和第二入射光；再将所述第一入射光进入光功率计，以便读取所述第一入射光对应的光功率；将所述第二入射光进入相干光模块，以便获得每束入射光对应的第二入射光对应的功率增益上报电压和目标设置电压；进而根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的功率增益上报电压确定所述第一曲线关系；根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的目标设置电压确定所述第二曲线关系。
在图5的(b)-(c)中，可以通过可调光源1至可调光源N发出不同波长的光，该所有不同波长的光传输至所述相干光模块，便称所述相干光模块接收端的总光，所述相干光模块还会搜索与所述相干光模块本振光源中同频率的光，即Colorless光。
在本公开一种可选实施例中，所述获得第一曲线关系和第二曲线关系，包括：在所述相干光模块对应接收端光功率范围内、对入射光的光功率进行衰减处理，并将衰减后的每束入射光进行分光处理，获得每束入射光对应的第一入射光和第二入射光；所述入射光为所述相干光模块的接收端接收的光束；获得每束入射光对应的第一入射光对应的光功率；获得每束入射光对应的第二入射光对应的功率增益上报电压和目标设置电压；根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的功率增益上报电压确定所述第一曲线关系；根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的目标设置电压确定所述第二曲线关系。
需要说明的是，本公开实施例中，对入射光的光功率进行衰减处理可以为通过可变光衰减器(Variable Optical Attenuators,VOA)调节光衰减量的操作，达到自动调节光功率的目的，以使所述相干光模块的接收端接收的光束的光功率在所述相干光模块对应接收端光功率范围内发生变化。
并将衰减后的每束入射光进行分光处理，获得每束入射光对应的第一入射光和第二入射光可以为并将调节后的每束入射光进入分光器进行分光处理，获 得每束入射光对应的第一入射光和第二入射光。其中，所述分光器用于将调节后的每束入射光的一半(50％)入射光(即每束入射光对应的第一入射光)进入光功率计，以方便获得每束入射光对应的第一入射光对应的光功率；以及将调节后的每束入射光的一半(50％)入射光(即每束入射光对应的第二入射光)进入所述相干光模块，以方便获得每束入射光对应的第二入射光对应的功率增益上报电压和目标设置电压。
根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的功率增益上报电压确定所述第一曲线关系可以理解为由于第一入射光对应的光功率和第二入射光对应的光功率相同，通过所述光功率计可以直接读取所述第一入射光对应的光功率，即所述第二入射光对应的光功率；根据分别通过所述光功率计读取所述第一入射光对应的光功率以及第二入射光对应的功率增益上报电压确定每个光功率与每个光功率对应的功率增益上报电压的对应关系，将多个所述对应关系构建所述第一曲线关系。作为一种示例，可以将所述光功率计每次读取的所述第一入射光对应的光功率以及第二入射光对应的功率增益上报电压组成坐标，以获得多组坐标，将该多组坐标在坐标系中描点，以构建所述第一曲线关系。
根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的目标设置电压确定所述第二曲线关系可以理解为由于第一入射光对应的光功率和第二入射光对应的光功率相同，通过所述光功率计可以直接读取所述第一入射光对应的光功率，即所述第二入射光对应的光功率；根据分别通过所述光功率计读取所述第一入射光对应的光功率以及第二入射光对应的目标设置电压确定每个光功率与每个光功率对应的目标设置电压的对应关系，将多个所述对应关系构建所述第二曲线关系。作为一种示例，可以将所述光功率计每次读取的所述第一入射光对应的光功率以及第二入射光对应的目标设置电压组成坐标，以获得多组坐标，将该多组坐标在坐标系中描点，以构建所述第二曲线关系。
在实际应用中，为了方便理解，这里又示例出一种相干光模块进行定标的结构示意图，图6为采用本公开实施例提供的相干光模块进行定标的又一种结 构示意图，如图6所示，在图6中需要通过可变光衰减器调节光衰减量的操作，并将衰减后的每束入射光进入分光器光处理，获得每束入射光对应的第一入射光和第二入射光；再将所述第一入射光进入光功率计，以便读取所述第一入射光对应的光功率；将所述第二入射光进入相干光模块，以便获得每束入射光对应的第二入射光对应的功率增益上报电压和目标设置电压；进而根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的功率增益上报电压确定所述第一曲线关系；根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的目标设置电压确定所述第二曲线关系。
在图6中，可以通过可调光源1至可调光源N发出不同波长的光，该所有不同波长的光传输至所述相干光模块，便称所述相干光模块接收端的总光，所述相干光模块还会搜索与所述相干光模块本振光源中同频率的光，即Colorless光。
在本公开一种可选实施例中，所述获得第一曲线关系和第二曲线关系之前，所述方法还包括：对所述相干光模块进行初始化处理；所述初始化处理包括：将所述相干光模块对应接收端光功率调节至所述接收端光功率范围的上限值。
需要说明的是，本公开实施例中，对所述相干光模块进行初始化处理可以通过调节VOA，将所述相干光模块对应接收端光功率调节至所述接收端光功率范围的上限值，以使所述相干光模块进行配置、供电，达到正常工作。
在本公开实施例中，通过第一曲线关系和第二曲线关系确定第一光功率，所述第一光功率用于将所述接收端光功率范围分为两个范围，进而在所述相干光模块的接收端光功率在所述第一范围的情况下，采用所述第一曲线关系对所述相干光模块进行定标；在所述相干光模块的接收端光功率在所述第二范围的情况下，采用所述第二曲线关系对所述相干光模块进行定标，该定标过程不依赖于PD，通过分段函数标定整个收端光功率范围内得到的上报曲线，从而提高整个光功率范围内上报精度。
基于相同的公开构思，图7为本公开实施例提供的一种相干光模块的定标装置的结构示意图，如图7所示，该装置20包括：获得单元201、确定单元202 和定标单元203，其中：
所述获得单元201，配置为获得第一曲线关系和第二曲线关系；所述第一曲线关系表示所述相干光模块对应接收端光功率范围内功率增益上报电压与接收端光功率的关系；所述功率增益上报电压用于衡量所述相干光模块中集成相干接收机输出的电压幅度；所述第二曲线关系表示所述相干光模块对应接收端光功率范围内目标设置电压与接收端光功率的关系；所述目标设置电压用于调整所述相干光模块中集成相干接收机输出的电压幅度；
所述确定单元202，配置为基于所述获得单元获得的所述第一曲线关系和所述第二曲线关系确定第一光功率；所述第一光功率用于将所述接收端光功率范围分为两个范围；所述两个范围中的第一范围为大于所述接收端光功率范围的下限值小于所述第一光功率；所述两个范围中的第二范围为大于等于所述第一光功率小于所述接收端光功率范围的上限值；
所述定标单元203，配置为基于所述确定单元确定的所述第一光功率确定所述相干光模块的定标方式；所述定标方式包括：在所述相干光模块的接收端光功率在所述第一范围的情况下，采用所述第一曲线关系对所述相干光模块进行定标；在所述相干光模块的接收端光功率在所述第二范围的情况下，采用所述第二曲线关系对所述相干光模块进行定标。
在一些实施例中，所述定标单元203，还配置为获取满足所述第一曲线关系的多组第一数据；对所述多组第一数据进行拟合处理，获得所述第一范围内的第一定标函数；以及获取满足所述第二曲线关系的多组第二数据；对所述多组第二数据进行拟合处理，获得所述第二范围内的第二定标函数。
在一些实施例中，所述获得单元201，还配置为在所述相干光模块对应接收端光功率范围内、对入射光的光功率进行调节处理，并将调节后的每束入射光进行分光处理，获得每束入射光对应的第一入射光和第二入射光；所述入射光为所述相干光模块的接收端接收的光束；获得每束入射光对应的第一入射光对应的光功率；获得每束入射光对应的第二入射光对应的功率增益上报电压和目标设置电压；根据对应于相同入射光的第一入射光对应的光功率和第二入射 光对应的功率增益上报电压确定所述第一曲线关系；根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的目标设置电压确定所述第二曲线关系。
在一些实施例中，所述获得单元201，还配置为在所述相干光模块对应接收端光功率范围内、对入射光的光功率进行衰减处理，并将衰减后的每束入射光进行分光处理，获得每束入射光对应的第一入射光和第二入射光；所述入射光为所述相干光模块的接收端接收的光束；获得每束入射光对应的第一入射光对应的光功率；获得每束入射光对应的第二入射光对应的功率增益上报电压和目标设置电压；根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的功率增益上报电压确定所述第一曲线关系；根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的目标设置电压确定所述第二曲线关系。
在一些实施例中所述装置20还包括：处理单元，配置为对所述相干光模块进行初始化处理；所述初始化处理包括：将所述相干光模块对应接收端光功率调节至所述接收端光功率范围的上限值。
本公开实施例提供一种相干光模块的定标装置，也是通过第一曲线关系和第二曲线关系确定第一光功率，所述第一光功率用于将所述接收端光功率范围分为两个范围，进而在所述相干光模块的接收端光功率在所述第一范围的情况下，采用所述第一曲线关系对所述相干光模块进行定标；在所述相干光模块的接收端光功率在所述第二范围的情况下，采用所述第二曲线关系对所述相干光模块进行定标，该定标过程不依赖于PD，通过分段函数标定整个收端光功率范围内得到的上报曲线，从而提高整个光功率范围内上报精度。其中，前述相干光模块的定标装置中的一些名词在上述相干光模块的定标方法中已经解释在此不再赘述。
本公开提供一种计算机可读介质，其上存储有计算机程序，所述计算机程序处理器被处理器执行时实现上述方法实施例的步骤，而前述的存储介质包括：移动存储设备、只读存储器(ROM，Read-Only Memory)、随机存取存储器 (RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
本公开实施例还提供一种相干光模块的定标设备，包括：处理器和用于存储能够在处理器上运行的计算机程序的存储器，其中，所述处理器用于运行所述计算机程序时，执行存储在存储器中的上述方法实施例的步骤。
图8是本公开实施例一种相干光模块的定标设备的硬件结构示意图，该相干光模块的定标设备30包括：至少一个处理器301和存储器302；可选地，所述相干光模块的定标设备30还可包括至少一个通信接口303；相干光模块的定标设备30中的各个组件可通过总线系统304耦合在一起，可理解，总线系统304用于实现这些组件之间的连接通信。总线系统304除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图8中将各种总线都标为总线系统304。
可以理解，存储器302可以是易失性存储器或非易失性存储器，也可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(ROM，Read Only Memory)、可编程只读存储器(PROM，Programmable Read-Only Memory)、可擦除可编程只读存储器(EPROM，Erasable Programmable Read-Only Memory)、电可擦除可编程只读存储器(EEPROM，Electrically Erasable Programmable Read-Only Memory)、磁性随机存取存储器(FRAM，ferromagnetic random access memory)、快闪存储器(Flash Memory)、磁表面存储器、光盘、或只读光盘(CD-ROM，Compact Disc Read-Only Memory)；磁表面存储器可以是磁盘存储器或磁带存储器。易失性存储器可以是随机存取存储器(RAM，Random Access Memory)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(SRAM，Static Random Access Memory)、同步静态随机存取存储器(SSRAM，Synchronous Static Random Access Memory)、动态随机存取存储器(DRAM，Dynamic Random Access Memory)、同步动态随机存取存储器(SDRAM，Synchronous Dynamic Random Access Memory)、双倍数据速率同步动态随机存 取存储器(DDRSDRAM，Double Data Rate Synchronous Dynamic Random Access Memory)、增强型同步动态随机存取存储器(ESDRAM，Enhanced Synchronous Dynamic Random Access Memory)、同步连接动态随机存取存储器(SLDRAM，SyncLink Dynamic Random Access Memory)、直接内存总线随机存取存储器(DRRAM，Direct Rambus Random Access Memory)。本公开实施例描述的存储器302旨在包括但不限于这些和任意其它适合类型的存储器。
本公开实施例中的存储器302用于存储各种类型的数据以支持相干光模块的定标设备30的操作。这些数据的示例包括：用于在相干光模块的定标设备30上操作的任何计算机程序，如获得基于所述第一图像和所述第二图像确定所述待检测隧道衬砌存在缺陷的里程范围等，实现本公开实施例方法的程序可以包含在存储器302中。
上述本公开实施例揭示的方法可以应用于处理器301中，或者由处理器301实现。处理器301可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器301中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器301可以是通用处理器、数字信号处理器(DSP，Digital Signal Processor)，或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。处理器301可以实现或者执行本公开实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本公开实施例所公开的方法的步骤，可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于存储介质中，该存储介质位于存储器302，处理器301读取存储器中的信息，结合其硬件完成前述方法的步骤。
在示例性实施例中，相干光模块的定标设备30可以被一个或多个应用专用集成电路(ASIC，Application Specific Integrated Circuit)、DSP、可编程逻辑器件(PLD，Programmable Logic Device)、复杂可编程逻辑器件(CPLD，Complex Programmable Logic Device)、现场可编程门阵列(FPGA，Field-Programmable Gate Array)、通用处理器、控制器、微控制器(MCU，Micro Controller Unit)、 微处理器(Microprocessor)、或其他电子元件实现，用于执行上述方法。
在本申请所提供的几个实施例中，应该理解到，所揭露的设备和方法，可以通过其它的方式实现。以上所描述的设备实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，如：多个单元或组件可以结合，或可以集成到另一个系统，或一些特征可以忽略，或不执行。另外，所显示或讨论的各组成部分相互之间的耦合、或直接耦合、或通信连接可以是通过一些接口，设备或单元的间接耦合或通信连接，可以是电性的、机械的或其它形式的。
上述作为分离部件说明的单元可以是、或也可以不是物理上分开的，作为单元显示的部件可以是、或也可以不是物理单元，即可以位于一个地方，也可以分布到多个网络单元上；可以根据实际的需要选择其中的部分或全部单元来实现本实施例方案的目的。
另外，在本公开各实施例中的各功能单元可以全部集成在一个处理单元中，也可以是各单元分别单独作为一个单元，也可以两个或两个以上单元集成在一个单元中；上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
本领域普通技术人员可以理解：实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成，前述的程序可以存储于一计算机可读取存储介质中，该程序在执行时，执行包括上述方法实施例的步骤；而前述的存储介质包括：移动存储设备、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
或者，本公开上述集成的单元如果以软件功能模块的形式实现并作为独立的产品销售或使用时，也可以存储在一个计算机可读取存储介质中。基于这样的理解，本公开实施例的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机、服务器、或者网络 设备等)执行本公开各个实施例所述方法的全部或部分。而前述的存储介质包括：移动存储设备、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应以所述权利要求的保护范围为准。

Claims (12)

  1. 一种相干光模块的定标方法，其中所述方法包括：
    获得第一曲线关系和第二曲线关系；所述第一曲线关系表示所述相干光模块对应接收端光功率范围内功率增益上报电压与接收端光功率的关系；所述功率增益上报电压用于衡量所述相干光模块中集成相干接收机输出的电压幅度；所述第二曲线关系表示所述相干光模块对应接收端光功率范围内目标设置电压与接收端光功率的关系；所述目标设置电压用于调整所述相干光模块中集成相干接收机输出的电压幅度；
    基于所述第一曲线关系和所述第二曲线关系确定第一光功率；所述第一光功率用于将所述接收端光功率范围分为两个范围；所述两个范围中的第一范围为大于所述接收端光功率范围的下限值小于所述第一光功率；所述两个范围中的第二范围为大于等于所述第一光功率小于所述接收端光功率范围的上限值；
    基于所述第一光功率确定所述相干光模块的定标方式；所述定标方式包括：在所述相干光模块的接收端光功率在所述第一范围的情况下，采用所述第一曲线关系对所述相干光模块进行定标；在所述相干光模块的接收端光功率在所述第二范围的情况下，采用所述第二曲线关系对所述相干光模块进行定标。
  2. 根据权利要求1所述的方法，其中，所述采用所述第一曲线关系对所述相干光模块进行定标，包括：
    获取满足所述第一曲线关系的多组第一数据；
    对所述多组第一数据进行拟合处理，获得所述第一范围内的第一定标函数；
    所述采用所述第二曲线关系对所述相干光模块进行定标，包括：
    获取满足所述第二曲线关系的多组第二数据；
    对所述多组第二数据进行拟合处理，获得所述第二范围内的第二定标函 数。
  3. 根据权利要求1所述的方法，其中，所述获得第一曲线关系和第二曲线关系，包括：
    在所述相干光模块对应接收端光功率范围内、对入射光的光功率进行调节处理，并将调节后的每束入射光进行分光处理，获得每束入射光对应的第一入射光和第二入射光；所述入射光为所述相干光模块的接收端接收的光束；
    获得每束入射光对应的第一入射光对应的光功率；
    获得每束入射光对应的第二入射光对应的功率增益上报电压和目标设置电压；
    根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的功率增益上报电压确定所述第一曲线关系；
    根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的目标设置电压确定所述第二曲线关系。
  4. 根据权利要求1所述的方法，其中，所述获得第一曲线关系和第二曲线关系，包括：
    在所述相干光模块对应接收端光功率范围内、对入射光的光功率进行衰减处理，并将衰减后的每束入射光进行分光处理，获得每束入射光对应的第一入射光和第二入射光；所述入射光为所述相干光模块的接收端接收的光束；
    获得每束入射光对应的第一入射光对应的光功率；
    获得每束入射光对应的第二入射光对应的功率增益上报电压和目标设置电压；
    根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的功率增益上报电压确定所述第一曲线关系；
    根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的目标设置电压确定所述第二曲线关系。
  5. 根据权利要求1所述的方法，其中，所述获得第一曲线关系和第二曲线关系之前，所述方法还包括：
    对所述相干光模块进行初始化处理；所述初始化处理包括：将所述相干光模块对应接收端光功率调节至所述接收端光功率范围的上限值。
  6. 一种相干光模块的定标装置，其中，所述装置包括：获得单元、确定单元和定标单元，其中：
    所述获得单元，配置为获得第一曲线关系和第二曲线关系；所述第一曲线关系表示所述相干光模块对应接收端光功率范围内功率增益上报电压与接收端光功率的关系；所述功率增益上报电压用于衡量所述相干光模块中集成相干接收机输出的电压幅度；所述第二曲线关系表示所述相干光模块对应接收端光功率范围内目标设置电压与接收端光功率的关系；所述目标设置电压用于调整所述相干光模块中集成相干接收机输出的电压幅度；
    所述确定单元，配置为基于所述获得单元获得的所述第一曲线关系和所述第二曲线关系确定第一光功率；所述第一光功率用于将所述接收端光功率范围分为两个范围；所述两个范围中的第一范围为大于所述接收端光功率范围的下限值小于所述第一光功率；所述两个范围中的第二范围为大于等于所述第一光功率小于所述接收端光功率范围的上限值；
    所述定标单元，配置为基于所述确定单元确定的所述第一光功率确定所述相干光模块的定标方式；所述定标方式包括：在所述相干光模块的接收端光功率在所述第一范围的情况下，采用所述第一曲线关系对所述相干光模块进行定标；在所述相干光模块的接收端光功率在所述第二范围的情况下，采用所述第二曲线关系对所述相干光模块进行定标。
  7. 根据权利要求6所述的装置，其中，所述定标单元，还配置为获取满足所述第一曲线关系的多组第一数据；对所述多组第一数据进行拟合处理，获得所述第一范围内的第一定标函数；以及获取满足所述第二曲线关系的多组第二数据；对所述多组第二数据进行拟合处理，获得所述第二范围内的第二定标函数。
  8. 根据权利要求6所述的装置，其中，所述获得单元，还配置为在所述相干光模块对应接收端光功率范围内、对入射光的光功率进行调节处理，并 将调节后的每束入射光进行分光处理，获得每束入射光对应的第一入射光和第二入射光；所述入射光为所述相干光模块的接收端接收的光束；获得每束入射光对应的第一入射光对应的光功率；获得每束入射光对应的第二入射光对应的功率增益上报电压和目标设置电压；根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的功率增益上报电压确定所述第一曲线关系；根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的目标设置电压确定所述第二曲线关系。
  9. 根据权利要求6所述的装置，其中，所述获得单元，还配置为在所述相干光模块对应接收端光功率范围内、对入射光的光功率进行衰减处理，并将衰减后的每束入射光进行分光处理，获得每束入射光对应的第一入射光和第二入射光；所述入射光为所述相干光模块的接收端接收的光束；获得每束入射光对应的第一入射光对应的光功率；获得每束入射光对应的第二入射光对应的功率增益上报电压和目标设置电压；根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的功率增益上报电压确定所述第一曲线关系；根据对应于相同入射光的第一入射光对应的光功率和第二入射光对应的目标设置电压确定所述第二曲线关系。
  10. 根据权利要求6所述的装置，其中，所述装置还包括：处理单元，配置为对所述相干光模块进行初始化处理；所述初始化处理包括：将所述相干光模块对应接收端光功率调节至所述接收端光功率范围的上限值。
  11. 一种光模块的定标设备，其中，所述光模块的定标设备包括：处理器和配置为存储能够在处理器上运行的计算机程序的存储器，其中，所述处理器配置为运行所述计算机程序时，执行权利要求1至5任一项所述方法的步骤。
  12. 一种计算机可读存储介质，其上存储有计算机程序，其中，所述计算机程序被至少一个处理器执行时实现如权利要求1至5中任一项所述方法的步骤。
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