WO2022033062A1 - Device for adjusting wavelength - Google Patents

Device for adjusting wavelength Download PDF

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Publication number
WO2022033062A1
WO2022033062A1 PCT/CN2021/087306 CN2021087306W WO2022033062A1 WO 2022033062 A1 WO2022033062 A1 WO 2022033062A1 CN 2021087306 W CN2021087306 W CN 2021087306W WO 2022033062 A1 WO2022033062 A1 WO 2022033062A1
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WIPO (PCT)
Prior art keywords
wavelength
optical signal
power
light source
lens
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PCT/CN2021/087306
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French (fr)
Chinese (zh)
Inventor
汪锋
余洋
赵洁
高建河
郑庆立
郭玲
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武汉光迅科技股份有限公司
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Publication of WO2022033062A1 publication Critical patent/WO2022033062A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/572—Wavelength control
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/0014—Monitoring arrangements not otherwise provided for
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
    • H01S3/0085—Modulating the output, i.e. the laser beam is modulated outside the laser cavity
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/1305—Feedback control systems
    • 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
    • H04B10/40—Transceivers
    • 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
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters

Definitions

  • the present application relates to the technical field of optical communication, and in particular, to a device for adjusting wavelength.
  • wavelength-tunable light sources With the rapid development of optical communication technology, the application of wavelength-tunable light sources is more and more extensive, such as wavelength-tunable lasers. Therefore, how to simply and efficiently realize the wavelength tunability of the light source is a problem that needs to be solved.
  • the embodiment of the present application provides a device for adjusting wavelength, which can simply and efficiently realize wavelength tunability of a light source.
  • the embodiment of the present application provides a device for adjusting wavelength, including:
  • a light source configured to generate a first optical signal
  • a filter element coated with a film layer configured to filter the backscattered light signal of the first light signal
  • a backlight monitoring detector configured to detect the power of the backscattered light signal after passing through the filter element, where the power is related to the wavelength of the first light signal
  • a photodetector configured to detect the power of the second optical signal output by the element other than the device for adjusting the wavelength.
  • the light source comprises: a wavelength tunable laser.
  • the transmittance of the filter element to the backscattered light signal of the first optical signal is related to the wavelength of the first optical signal.
  • the device further comprises: a connector
  • the connector is connected to the element, and the second optical signal generated by the element is incident on the photodetector through the connector.
  • the device further includes: a first lens configured to convert the second optical signal input through the connector into a parallel light beam.
  • the device further includes a beam splitter configured to fully reflect the second optical signal through the first lens to the photodetector.
  • the device further includes: a second lens, the second lens is disposed between the beam splitter and the photodetector, and is configured to reflect the second light reflected by the beam splitter Signals are aggregated.
  • the device further includes:
  • a third lens where the third lens is configured to converge the first optical signal generated by the light source, so that the converged first optical signal is output to an element outside the device.
  • the light source, the filter, and the backlight monitoring detector are packaged within a housing.
  • the light source, the filter, and the backlight monitoring detector are located on the same optical axis.
  • the power variation detected by the backlight monitoring detector includes: a first power variation and a second power variation
  • the first power variation is related to the wavelength variation of the first optical signal
  • the second power variation is related to the initial power of the optical signal generated by the light source.
  • the power variation detected by the backlight monitoring detector is equal to the sum of the product of the first parameter and the first power variation and the product of the second parameter and the second power variation.
  • the device for adjusting wavelength includes: a light source, configured to generate a first optical signal; filtering; a backlight monitoring detector configured to detect the power of the backscattered optical signal after passing through the filter element, the power being related to the wavelength of the first optical signal, and a photodetector configured to detect the power used for the first optical signal
  • the power of the second optical signal output by components other than the wavelength-adjusting device is adjusted.
  • the device for adjusting the wavelength since the power detected by the backlight monitoring detector is related to the wavelength of the optical signal generated by the light source, the device for adjusting the wavelength provided by the embodiments of the present application can be based on the power detected by the backlight monitoring detector The wavelength of the optical signal generated by the light source is adjusted to realize the adjustment of the wavelength of the optical signal generated by the light source.
  • the device for adjusting the wavelength provided in the embodiment of the present application can also receive a second optical signal input by an element other than the device for adjusting the wavelength, so as to realize simultaneous emission and reception of the optical signal; that is, the implementation of the present application
  • the device for adjusting the wavelength used in the example is a single receiving port transceiver integrated device (Bi-Directional Optical Sub-Assembly, BOSA).
  • FIG. 1 is a schematic diagram of an optional structure of a device for adjusting wavelengths provided by an embodiment of the present application
  • FIG. 2 is a schematic diagram of the relationship between the wavelength variation of the optical signal and the power variation caused by the wavelength variation according to an embodiment of the present application;
  • FIG. 3 is a schematic diagram of another optional structure of a device for adjusting wavelengths provided by an embodiment of the present application.
  • Fig. 4 is another optional structural schematic diagram of the device for adjusting wavelength provided by the embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a device for adjusting wavelength in the related art.
  • the adjustable optical module has the ability to cover the wavelength range of tens of nanometers in one model, which greatly simplifies the type and quantity of optical module inventory; and can flexibly adjust the wavelength of the optical module, Realize the dynamic redistribution of optical network architecture and service traffic, which greatly saves fiber resources. Therefore, adjusting the wavelength of the optical module has become a research hotspot.
  • tunable optical modules include wavelength-tunable lasers, but the high cost of wavelength-tunable lasers limits their use. Therefore, how to reduce the production cost of the dimmable module and simplify the packaging of the dimmable module has become a key factor for the wide use of the dimmable module.
  • An embodiment of the present application provides a device for adjusting wavelength, and an optional structure of the device 100 for adjusting wavelength, as shown in FIG. 1 , includes:
  • the light source 101 is configured to generate a first optical signal.
  • the light source 101 is a wavelength-tunable light source; such as a wavelength-tunable laser.
  • the filter element 102 coated with the film layer is configured to filter the backscattered light signal of the first light signal
  • the filter element 102 coated with the film layer has different transmittances for optical signals of different wavelengths. For example, after the optical signal with the first wavelength passes through the film-coated filter element 102, A% of the optical signal can pass through the film-coated filter element 102; the light with the second wavelength After the signal passes through the film-coated filter element 102 , B% of the optical signal can pass through the film-coated filter element 102 .
  • the backlight monitoring detector 103 is configured to detect the power of the backscattered light signal after passing through the filter element, where the power is related to the wavelength of the first light signal.
  • the backscattered light signal of the first optical signal transmitted by the filter element detected by the backlight monitoring detector 103 The magnitude of the power is related to the wavelength of the first optical signal.
  • the power of the first optical signal generated by the light source is X
  • the filter element detected by the backlight monitoring detector 103 The power of the backscattered light signal of the transmitted first light signal is M; in the case where the wavelength of the first light signal is the second wavelength, the backscattered light signal detected by the backlight monitoring detector 103 is transmitted through the filter element
  • the power of the backscattered optical signal of the last first optical signal is N.
  • the light source 101 , the film-coated filter element 102 and the backlight monitoring detector 103 are located on the same optical axis, that is, the light source 101 , the film-coated filter element 103 102 and the backlight monitoring detector 103 are arranged on a coaxial platform.
  • the light source 101 , the filter element 102 coated with the film layer and the backlight monitoring detector 103 are packaged in a housing.
  • the power variation detected by the backlight monitoring detector 103 includes: a first power variation and a second power variation
  • the first power variation is related to the wavelength variation of the first optical signal
  • the second power variation is related to the bias and modulation current of the light source.
  • the power variation detected by the backlight monitoring detector 103 is equal to the sum of the product of the first parameter and the first power variation and the product of the second parameter and the second power variation;
  • the following formula P ⁇ *P1+ ⁇ *P2;
  • P is the power change amount detected by the backlight monitoring detector 103;
  • P1 is the power change amount caused by the wavelength change of the first optical signal, that is, the first power change amount;
  • P2 is the bias of the light source and the variation of the power caused by the modulation current, that is, the second power variation.
  • ⁇ is the first parameter, and ⁇ is the second parameter.
  • the amount of power variation caused by the bias and modulation current of the light source is compensated by adjusting the power of the first optical signal generated by the light source.
  • the relationship between the wavelength change of the first optical signal and the power change (first power change) caused by the wavelength change can be separately calculated, and then the light source can be adjusted inversely through the wavelength adjustment function. wavelength. Then calculate the power variation (second power variation) caused by the bias of the light source and the modulation current, and adjust the power of the light source to compensate for the variation of the power caused by the bias of the light source and the modulation current. In this way, the proportional relationship between the first power change amount and the second power change amount can be further calculated, and then the first parameter and the second parameter can be calculated.
  • a standard wavelength light source can be used to determine the relationship between the wavelength change of the optical signal and the power change caused by the wavelength change, and store the relationship between the wavelength change of the optical signal and the power change caused by the wavelength change. Relationship. The relationship between the wavelength change of the optical signal and the power change caused by the wavelength change can be shown in FIG. 2 . As the wavelength increases, the power attenuation increases linearly, that is, the backlight monitoring detector 103 receives The power of the optical signal becomes smaller. Of course, in some embodiments, the relationship between the wavelength change of the optical signal and the power change caused by the wavelength change may also be: as the wavelength increases, the power attenuation decreases linearly, that is, the backlight monitoring detector 103 The power of the received optical signal becomes larger.
  • the function of the backlight monitoring detector 103 may be implemented by an MPD.
  • the embodiment of the present application further provides another device for adjusting wavelength, and another optional structure of the device 100 for adjusting wavelength, as shown in FIG. 3 , in the device for adjusting wavelength shown in FIG. 1 .
  • a photodetector 105, a first lens 106, a beam splitter 107, a second lens 108, a connector 109, and a third lens 110 are added.
  • the photodetector 105 is configured to detect the power of the second optical signal output by components other than the device 100 for adjusting the wavelength.
  • the connector 109 is configured to be connected to an element other than the device 100 for adjusting the wavelength, so that the optical signal generated by the light source 101 is incident on the element through the connector 109, and/or all The optical signal generated by the element is incident to the device 100 for adjusting wavelength through the connector 109 .
  • the connector 109 may be in the form of a pin, a solid connector, or other optical fiber connectors.
  • the first lens 106 is configured to convert the second optical signal input through the connector 109 into a parallel light beam. After the parallel light beam is incident on the beam splitter 107, the incident surface of the beam splitter 107 is completely reflected and then incident on the second lens 108; after the second lens 108 converges the incident parallel light, it is incident on the photodetector device 105.
  • the beam splitting mirror 107 may be composed of one beam splitting element as shown in FIG. 3 , or may be composed of two beam splitting elements as shown in FIG. 4 , or multiple beam splitting elements.
  • the first lens 106 and the second lens 108 improve the efficiency of the photodetector 105 in detecting the power of the second optical signal.
  • the second optical signal is completely reflected by the beam splitter 107, so that the device 100 for adjusting the wavelength can completely isolate the received second optical signal and the outputted first optical signal.
  • the third lens 110, the third lens 110 is configured to convert the convergent light beam output by the light source 101 into a parallel light beam.
  • the third lens 110 and the film-coated filter element 102 are located on both sides of the light source 101 on the same optical axis.
  • the light source 101 is configured to generate a first optical signal.
  • the light source 101 is a wavelength-tunable light source; such as a wavelength-tunable laser.
  • the filter element 102 coated with a film layer is configured to filter the backscattered light signal of the first light signal.
  • the filter element 102 coated with the film layer has different transmittances for optical signals of different wavelengths. For example, after the optical signal with the first wavelength passes through the film-coated filter element 102, A% of the optical signal can pass through the film-coated filter element 102; the light with the second wavelength After the signal passes through the film-coated filter element 102 , B% of the optical signal can pass through the film-coated filter element 102 .
  • the backlight monitoring detector 103 is configured to detect the power of the backscattered light signal after passing through the filter element, where the power is related to the wavelength of the first light signal.
  • the backscattered light signal of the first optical signal transmitted by the filter element detected by the backlight monitoring detector 103 The magnitude of the power is related to the wavelength of the first optical signal.
  • the power of the first optical signal generated by the light source is X
  • the filter element detected by the backlight monitoring detector 103 The power of the backscattered light signal of the transmitted first light signal is M; in the case where the wavelength of the first light signal is the second wavelength, the backscattered light signal detected by the backlight monitoring detector 103 is transmitted through the filter element
  • the power of the backscattered optical signal of the last first optical signal is N.
  • the photodetector 105 is configured to detect the power of the second optical signal output by the elements other than the device 100 for adjusting the wavelength.
  • the light source 101 , the film-coated filter element 102 and the backlight monitoring detector 103 are located on the same optical axis, that is, the light source 101 , the film-coated filter element 103 102 and the backlight monitoring detector 103 are arranged on a coaxial platform.
  • the light source 101, the filter element 102 coated with the film layer and the backlight monitoring detector 103 are packaged in a housing.
  • the power variation detected by the backlight monitoring detector 103 includes: a first power variation and a second power variation
  • the first power variation is related to the wavelength variation of the first optical signal
  • the second power variation is related to the bias and modulation current of the light source.
  • the power variation detected by the backlight monitoring detector 103 is equal to the sum of the product of the first parameter and the first power variation and the product of the second parameter and the second power variation;
  • the following formula P ⁇ *P1+ ⁇ *P2;
  • P is the power change amount detected by the backlight monitoring detector 103;
  • P1 is the power change amount caused by the wavelength change of the first optical signal, that is, the first power change amount;
  • P2 is the bias of the light source and the variation of the power caused by the modulation current, that is, the second power variation.
  • ⁇ is the first parameter, and ⁇ is the second parameter.
  • the amount of power variation caused by the bias and modulation current of the light source is compensated by adjusting the power of the first optical signal generated by the light source.
  • the relationship between the wavelength change of the first optical signal and the power change (first power change) caused by the wavelength change can be separately calculated, and then the light source can be adjusted inversely through the wavelength adjustment function. wavelength. Then calculate the power variation (second power variation) caused by the bias of the light source and the modulation current, and adjust the power of the light source to compensate for the variation of the power caused by the bias of the light source and the modulation current. In this way, the proportional relationship between the first power change amount and the second power change amount can be further calculated, and then the first parameter and the second parameter can be calculated.
  • a standard wavelength light source can be used to determine the relationship between the wavelength change of the optical signal and the power change caused by the wavelength change, and store the relationship between the wavelength change of the optical signal and the power change caused by the wavelength change. Relationship. The relationship between the wavelength change of the optical signal and the power change caused by the wavelength change can be shown in FIG. 2 . As the wavelength increases, the power attenuation increases linearly, that is, the backlight monitoring detector 103 receives The power of the optical signal becomes smaller. Of course, in some embodiments, the relationship between the wavelength change of the optical signal and the power change caused by the wavelength change may also be: as the wavelength increases, the power attenuation decreases linearly, that is, the backlight monitoring detector 103 The power of the received optical signal becomes larger.
  • the function of the backlight monitoring detector 103 may be implemented by an MPD, and the function of the photodetector 105 may be implemented by a PD.
  • the light source 101, the backlight monitoring detector 103, and the filter element 102 coated with a film layer can be packaged in a housing, the photodetector 105 can be packaged in a housing, and the connector 109 can be enclosed in a housing.
  • the first lens 106 , the beam splitter 107 , the second lens 108 and the third lens 110 can be arranged on the same optical platform; according to the types of the above-mentioned components, they can be welded or coupled to the platform.
  • the device for adjusting the wavelength provided by the embodiment of the present application may include two light emission ports, and the two light emission ports may be respectively provided with a backlight monitoring detector and a photodetector to detect the power of the emitted light signal; therefore, this
  • the device for adjusting the wavelength actually provided by the application embodiment is a BOSA.
  • the device for adjusting the wavelength provided in the embodiment of the present application requires fewer components, lower manufacturing process difficulty, lower manufacturing cost and relatively low cost. high productivity.

Abstract

Provided is a device for adjusting a wavelength. The device for adjusting a wavelength comprises: a light source, which is configured to generate a first light signal; a filtering element, which is plated with a film layer, and is configured to filter a backscattered light signal of the first light signal; and a backlight monitoring detector, which is configured to measure the power of the backscattered light signal which has passed through the filtering element, wherein the power is related to the wavelength of the first light signal.

Description

一种用于调节波长的器件A device for adjusting wavelengths
相关申请的交叉引用CROSS-REFERENCE TO RELATED APPLICATIONS
本申请基于申请号为202010814299.X、申请日为2020年8月13日的中国专利申请提出，并要求中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。This application is based on the Chinese patent application with the application number of 202010814299.X and the application date of August 13, 2020, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is incorporated herein by reference.
技术领域technical field
本申请涉及光通信技术领域，尤其涉及一种用于调节波长的器件。The present application relates to the technical field of optical communication, and in particular, to a device for adjusting wavelength.
背景技术Background technique
随着光通信技术的飞速发展，波长可调谐的光源的应用越来越广泛，波长可调谐的光源如波长可调谐的激光器。因此，如何简单、高效的实现光源的波长可调谐是需要解决的问题。With the rapid development of optical communication technology, the application of wavelength-tunable light sources is more and more extensive, such as wavelength-tunable lasers. Therefore, how to simply and efficiently realize the wavelength tunability of the light source is a problem that needs to be solved.
发明内容SUMMARY OF THE INVENTION
本申请实施例提供一种用于调节波长的器件，能够简单、高效的实现光源的波长可调谐。The embodiment of the present application provides a device for adjusting wavelength, which can simply and efficiently realize wavelength tunability of a light source.
本申请实施例的技术方案是这样实现的：The technical solutions of the embodiments of the present application are implemented as follows:
本申请实施例提供一种用于调节波长的器件，包括：The embodiment of the present application provides a device for adjusting wavelength, including:
光源，配置为产生第一光信号；a light source configured to generate a first optical signal;
镀有膜层的滤波元件，配置为对所述第一光信号的背散射光信号进行滤波；a filter element coated with a film layer, configured to filter the backscattered light signal of the first light signal;
背光监测探测器，配置为检测经所述滤波元件后的背散射光信号的功率，所述功率与所述第一光信号的波长有关；a backlight monitoring detector, configured to detect the power of the backscattered light signal after passing through the filter element, where the power is related to the wavelength of the first light signal;
光电探测器，配置为检测所述用于调节波长的器件之外的元件输出的第二光信号的功率。a photodetector, configured to detect the power of the second optical signal output by the element other than the device for adjusting the wavelength.
在一些实施例中，所述光源包括：波长可调谐的激光器。In some embodiments, the light source comprises: a wavelength tunable laser.
在一些实施例中，所述滤波元件对所述第一光信号的背散射光信号的透过率与所述第一光信号的波长有关。In some embodiments, the transmittance of the filter element to the backscattered light signal of the first optical signal is related to the wavelength of the first optical signal.
在一些实施例中，所述器件还包括：连接器；In some embodiments, the device further comprises: a connector;
所述连接器与所述元件连接，所述元件产生的第二光信号经所述连接器入射至所述光电探测器。The connector is connected to the element, and the second optical signal generated by the element is incident on the photodetector through the connector.
在一些实施例中，所述器件还包括：第一透镜，所述第一透镜配置为将经所述连接器输入的第二光信号转化为平行光束。In some embodiments, the device further includes: a first lens configured to convert the second optical signal input through the connector into a parallel light beam.
在一些实施例中，所述器件还包括：分光镜，所述分光镜配置为将经所述第一透镜的第二光信号全部反射至所述光电探测器。In some embodiments, the device further includes a beam splitter configured to fully reflect the second optical signal through the first lens to the photodetector.
在一些实施例中，所述器件还包括：第二透镜，所述第二透镜设置于所述分光镜与所述光电探测器之间，配置为对经所述分光镜反射后的第二光信号进行汇聚。In some embodiments, the device further includes: a second lens, the second lens is disposed between the beam splitter and the photodetector, and is configured to reflect the second light reflected by the beam splitter Signals are aggregated.
在一些实施例中，所述器件还包括：In some embodiments, the device further includes:
第三透镜，所述第三透镜配置为将所述光源产生的第一光信号进行汇聚，以使汇聚后的第一光信号输出至所述器件之外的元件。A third lens, where the third lens is configured to converge the first optical signal generated by the light source, so that the converged first optical signal is output to an element outside the device.
在一些实施例中，所述光源、所述滤光片和所述背光监测探测器封装于壳体内。In some embodiments, the light source, the filter, and the backlight monitoring detector are packaged within a housing.
在一些实施例中，所述光源、所述滤光片和所述背光监测探测器位于同一光学轴线上。In some embodiments, the light source, the filter, and the backlight monitoring detector are located on the same optical axis.
在一些实施例中，所述背光监测探测器检测到的功率变化量包括：第一功率变化量和第二功率变化量；In some embodiments, the power variation detected by the backlight monitoring detector includes: a first power variation and a second power variation;
所述第一功率变化量与所述第一光信号的波长变化有关，所述第二功率变化量与所述光源产生的光信号的初始功率有关。The first power variation is related to the wavelength variation of the first optical signal, and the second power variation is related to the initial power of the optical signal generated by the light source.
在一些实施例中，所述背光监测探测器检测到的功率变化量等于第一参数与所述第一功率变化量的乘积，与第二参数与所述第二功率变化量的乘积之和。In some embodiments, the power variation detected by the backlight monitoring detector is equal to the sum of the product of the first parameter and the first power variation and the product of the second parameter and the second power variation.
本申请实施例提供的用于调节波长的器件，所述器件包括：光源，配置为产生第一光信号；镀有膜层的滤波元件，配置为对所述第一光信号的背散射光 信号进行滤波；背光监测探测器，配置为检测经所述滤波元件后的背散射光信号的功率，所述功率与所述第一光信号的波长有关，光电探测器，配置为检测所述用于调节波长的器件之外的元件输出的第二光信号的功率。如此，由于所述背光监测探测器检测到的功率与所述光源产生的光信号的波长有关，使得本申请实施例提供的用于调节波长的器件能够根据所述背光监测探测器检测到的功率调整所述光源产生的光信号的波长，实现对所述光源产生的光信号的波长的调节。并且，本申请实施例提供的用于调节波长的器件还能够接收所述用于调节波长的器件之外的元件输入的第二光信号，实现对光信号的同时发射和接收；即本申请实施例提供用的用于调节波长的器件为单接收口收发一体器件(Bi-Directional Optical Sub-Assembly，BOSA)。The device for adjusting wavelength provided by the embodiment of the present application includes: a light source, configured to generate a first optical signal; filtering; a backlight monitoring detector configured to detect the power of the backscattered optical signal after passing through the filter element, the power being related to the wavelength of the first optical signal, and a photodetector configured to detect the power used for the first optical signal The power of the second optical signal output by components other than the wavelength-adjusting device is adjusted. In this way, since the power detected by the backlight monitoring detector is related to the wavelength of the optical signal generated by the light source, the device for adjusting the wavelength provided by the embodiments of the present application can be based on the power detected by the backlight monitoring detector The wavelength of the optical signal generated by the light source is adjusted to realize the adjustment of the wavelength of the optical signal generated by the light source. In addition, the device for adjusting the wavelength provided in the embodiment of the present application can also receive a second optical signal input by an element other than the device for adjusting the wavelength, so as to realize simultaneous emission and reception of the optical signal; that is, the implementation of the present application The device for adjusting the wavelength used in the example is a single receiving port transceiver integrated device (Bi-Directional Optical Sub-Assembly, BOSA).
附图说明Description of drawings
图1为本申请实施例提供的用于调节波长的器件的一种可选结构示意图；FIG. 1 is a schematic diagram of an optional structure of a device for adjusting wavelengths provided by an embodiment of the present application;
图2为本申请实施例光信号的波长变化量与波长变化导致的功率变化量之间的关系示意图；2 is a schematic diagram of the relationship between the wavelength variation of the optical signal and the power variation caused by the wavelength variation according to an embodiment of the present application;
图3为本申请实施例提供的用于调节波长的器件的又一种可选结构示意图；3 is a schematic diagram of another optional structure of a device for adjusting wavelengths provided by an embodiment of the present application;
图4为本申请实施例提供的用于调节波长的器件的另一种可选结构示意图；Fig. 4 is another optional structural schematic diagram of the device for adjusting wavelength provided by the embodiment of the present application;
图5为相关技术中用于调节波长的器件的结构示意图。FIG. 5 is a schematic structural diagram of a device for adjusting wavelength in the related art.
具体实施方式detailed description
以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.
随着可动态配置光网络架构的发展，可调光模块具备一个型号覆盖几十纳米波长范围的能力，极大地简化了光模块库存的种类和数量；并且，可以灵活的调节光模块的波长，实现光网络架构和业务流量的动态重分配，极大地节省 光纤资源。因此，调节光模块的波长便成为一研究热点。With the development of the dynamically configurable optical network architecture, the adjustable optical module has the ability to cover the wavelength range of tens of nanometers in one model, which greatly simplifies the type and quantity of optical module inventory; and can flexibly adjust the wavelength of the optical module, Realize the dynamic redistribution of optical network architecture and service traffic, which greatly saves fiber resources. Therefore, adjusting the wavelength of the optical module has become a research hotspot.
常用的可调光模块包括波长可调谐激光器，但是波长可调谐激光器的高成本限制了其使用范围。因此，如何降低可调光模块的生成成本、简化可调光模块的封装则成为可调光模块被广泛使用的关键因素。Commonly used tunable optical modules include wavelength-tunable lasers, but the high cost of wavelength-tunable lasers limits their use. Therefore, how to reduce the production cost of the dimmable module and simplify the packaging of the dimmable module has become a key factor for the wide use of the dimmable module.
本申请实施例提供一种用于调节波长的器件，所述用于调节波长的器件100的一种可选结构，如图1所示，包括：An embodiment of the present application provides a device for adjusting wavelength, and an optional structure of the device 100 for adjusting wavelength, as shown in FIG. 1 , includes:
光源101，配置为产生第一光信号。The light source 101 is configured to generate a first optical signal.
在一些实施例中，所述光源101为波长可调的光源；如波长可调谐的激光器。In some embodiments, the light source 101 is a wavelength-tunable light source; such as a wavelength-tunable laser.
镀有膜层的滤波元件102，配置为对所述第一光信号的背散射光信号进行滤波；.The filter element 102 coated with the film layer is configured to filter the backscattered light signal of the first light signal;
在一些实施例中，所述镀有膜层的滤波元件102对不同波长的光信号的透过率不同。举例来说，具有第一波长的光信号经所述镀有膜层的滤波元件102之后，有A％的光信号能够透过所述镀有膜层的滤波元件102；具有第二波长的光信号经所述镀有膜层的滤波元件102之后，有B％的光信号能够透过所述镀有膜层的滤波元件102。In some embodiments, the filter element 102 coated with the film layer has different transmittances for optical signals of different wavelengths. For example, after the optical signal with the first wavelength passes through the film-coated filter element 102, A% of the optical signal can pass through the film-coated filter element 102; the light with the second wavelength After the signal passes through the film-coated filter element 102 , B% of the optical signal can pass through the film-coated filter element 102 .
背光监测探测器103，配置为检测经所述滤波元件后的背散射光信号的功率，所述功率与所述第一光信号的波长有关。The backlight monitoring detector 103 is configured to detect the power of the backscattered light signal after passing through the filter element, where the power is related to the wavelength of the first light signal.
在一些实施例中，在所述光源产生的第一光信号的功率固定的情况下，所述背光监测探测器103检测到的经所述滤波元件透射后的第一光信号的背散射光信号的功率的大小与所述第一光信号的波长有关。举例来说，所述光源产生的第一光信号的功率为X，在所述第一光信号的波长为第一波长的情况下，所述背光监测探测器103检测到的经所述滤波元件透射后的第一光信号的背散射光信号的功率为M；在所述第一光信号的波长为第二波长的情况下，所述背光监测探测器103检测到的经所述滤波元件透射后的第一光信号的背散射光信号的功率为N。In some embodiments, under the condition that the power of the first optical signal generated by the light source is fixed, the backscattered light signal of the first optical signal transmitted by the filter element detected by the backlight monitoring detector 103 The magnitude of the power is related to the wavelength of the first optical signal. For example, the power of the first optical signal generated by the light source is X, and when the wavelength of the first optical signal is the first wavelength, the filter element detected by the backlight monitoring detector 103 The power of the backscattered light signal of the transmitted first light signal is M; in the case where the wavelength of the first light signal is the second wavelength, the backscattered light signal detected by the backlight monitoring detector 103 is transmitted through the filter element The power of the backscattered optical signal of the last first optical signal is N.
在一些实施例中，所述光源101、所述镀有膜层的滤波元件102和所述背 光监测探测器103位于同一光学轴线上，即所述光源101、所述镀有膜层的滤波元件102和所述背光监测探测器103设置于在同轴平台上。In some embodiments, the light source 101 , the film-coated filter element 102 and the backlight monitoring detector 103 are located on the same optical axis, that is, the light source 101 , the film-coated filter element 103 102 and the backlight monitoring detector 103 are arranged on a coaxial platform.
在一些实施例中，所述光源101、所述镀有膜层的滤波元件102和所述背光监测探测器103封装于一个壳体内。In some embodiments, the light source 101 , the filter element 102 coated with the film layer and the backlight monitoring detector 103 are packaged in a housing.
在一些实施例中，所述背光监测探测器103检测到的功率变化量包括：第一功率变化量和第二功率变化量；In some embodiments, the power variation detected by the backlight monitoring detector 103 includes: a first power variation and a second power variation;
所述第一功率变化量与所述第一光信号的波长变化有关，所述第二功率变化量与所述光源的偏置和调制电流有关。The first power variation is related to the wavelength variation of the first optical signal, and the second power variation is related to the bias and modulation current of the light source.
在一些实施中，所述背光监测探测器103检测到的功率变化量等于第一参数与所述第一功率变化量的乘积，与第二参数与所述第二功率变化量的乘积之和；如下公P＝α*P1+β*P2；In some implementations, the power variation detected by the backlight monitoring detector 103 is equal to the sum of the product of the first parameter and the first power variation and the product of the second parameter and the second power variation; The following formula P=α*P1+β*P2;
其中，P为所述背光监测探测器103检测到的功率变化量；P1为所述第一光信号的波长变化导致的功率变化量，即第一功率变化量；P2为所述光源的偏置和调制电流导致的功率的变化量，即第二功率变化量。α为第一参数，β为第二参数。这里，所述光源的偏置和调制电流导致功率的变化量通过调整所述光源产生的第一光信号的功率进行补偿。Among them, P is the power change amount detected by the backlight monitoring detector 103; P1 is the power change amount caused by the wavelength change of the first optical signal, that is, the first power change amount; P2 is the bias of the light source and the variation of the power caused by the modulation current, that is, the second power variation. α is the first parameter, and β is the second parameter. Here, the amount of power variation caused by the bias and modulation current of the light source is compensated by adjusting the power of the first optical signal generated by the light source.
在具体实施时，可先单独计算出所述第一光信号的波长变化量与波长变化导致的功率变化量(第一功率变化量)之间的关系，进而通过波长调节功能来反向调节光源的波长。再计算出光源的偏置和调制电流导致的功率的变化量(第二功率变化量)，通过调整所述光源的功率来补偿光源的偏置和调制电流导致的功率的变化量。如此，能够进一步计算出第一功率变化量和第二功率变化量之间的比例关系，进而能够计算出第一参数和第二参数。During specific implementation, the relationship between the wavelength change of the first optical signal and the power change (first power change) caused by the wavelength change can be separately calculated, and then the light source can be adjusted inversely through the wavelength adjustment function. wavelength. Then calculate the power variation (second power variation) caused by the bias of the light source and the modulation current, and adjust the power of the light source to compensate for the variation of the power caused by the bias of the light source and the modulation current. In this way, the proportional relationship between the first power change amount and the second power change amount can be further calculated, and then the first parameter and the second parameter can be calculated.
在具体实施时，可以先采用标准波长的光源确定光信号的波长变化量与波长变化导致的功率变化量之间的关系，并存储光信号的波长变化量与波长变化导致的功率变化量之间的关系。所述光信号的波长变化量与波长变化导致的功率变化量之间的关系，可以如图2所示，随着波长的增长，功率衰减量呈线性变大，即背光监测探测器103接收到的光信号的功率变小。当然，在一些实施 例中，光信号的波长变化量与波长变化导致的功率变化量之间的关系也可以是：随着波长的增长，功率衰减量呈线性变小，即背光监测探测器103接收到的光信号的功率变大。In specific implementation, a standard wavelength light source can be used to determine the relationship between the wavelength change of the optical signal and the power change caused by the wavelength change, and store the relationship between the wavelength change of the optical signal and the power change caused by the wavelength change. Relationship. The relationship between the wavelength change of the optical signal and the power change caused by the wavelength change can be shown in FIG. 2 . As the wavelength increases, the power attenuation increases linearly, that is, the backlight monitoring detector 103 receives The power of the optical signal becomes smaller. Of course, in some embodiments, the relationship between the wavelength change of the optical signal and the power change caused by the wavelength change may also be: as the wavelength increases, the power attenuation decreases linearly, that is, the backlight monitoring detector 103 The power of the received optical signal becomes larger.
在一些实施例中，所述背光监测探测器103的功能可以由MPD实现。In some embodiments, the function of the backlight monitoring detector 103 may be implemented by an MPD.
本申请实施例还提供又一种用于调节波长的器件，所述用于调节波长的器件100的又一种可选结构，如图3所示，在图1所示的用于调节波长的器件100的基础上，增加了光电探测器105、第一透镜106、分光镜107、第二透镜108、连接器109、第三透镜110。The embodiment of the present application further provides another device for adjusting wavelength, and another optional structure of the device 100 for adjusting wavelength, as shown in FIG. 3 , in the device for adjusting wavelength shown in FIG. 1 . On the basis of the device 100, a photodetector 105, a first lens 106, a beam splitter 107, a second lens 108, a connector 109, and a third lens 110 are added.
其中，所述光电探测器105，配置为检测所述用于调节波长的器件100之外的元件输出的第二光信号的功率。Wherein, the photodetector 105 is configured to detect the power of the second optical signal output by components other than the device 100 for adjusting the wavelength.
所述连接器109，配置为与所述用于调节波长的器件100之外的元件连接，使所述光源101产生的光信号经所述连接器109入射至所述元件，和/或使所述元件产生的光信号经所述连接器109入射至所述用于调节波长的器件100。The connector 109 is configured to be connected to an element other than the device 100 for adjusting the wavelength, so that the optical signal generated by the light source 101 is incident on the element through the connector 109, and/or all The optical signal generated by the element is incident to the device 100 for adjusting wavelength through the connector 109 .
在一些实施例中，所述连接器109的形态可以是插针，也可以是固态连接器，还可以是其他光纤类的连接器。In some embodiments, the connector 109 may be in the form of a pin, a solid connector, or other optical fiber connectors.
所述第一透镜106，配置为将经所述连接器109输入的第二光信号转换为平行光束。所述平行光束入射至分光镜107之后，在所述分光镜107的入射面全部反射后入射至第二透镜108；所述第二透镜108将入射的平行光汇聚后，入射至所述光电探测器105。The first lens 106 is configured to convert the second optical signal input through the connector 109 into a parallel light beam. After the parallel light beam is incident on the beam splitter 107, the incident surface of the beam splitter 107 is completely reflected and then incident on the second lens 108; after the second lens 108 converges the incident parallel light, it is incident on the photodetector device 105.
在一些实施例中，所述分光镜107可以由如图3所示的一个分光元件构成，也可由如图4所示的两个分光元件构成，或者有多个分光元件构成。In some embodiments, the beam splitting mirror 107 may be composed of one beam splitting element as shown in FIG. 3 , or may be composed of two beam splitting elements as shown in FIG. 4 , or multiple beam splitting elements.
本申请实施例中，通过第一透镜106和第二透镜108提高了所述光电探测器105检测所述第二光信号功率的效率。通过分光镜107对所述第二光信号全部反射，实现了所述用于调节波长的器件100对接收的第二光信号和输出的第一光信号的完全隔离。In this embodiment of the present application, the first lens 106 and the second lens 108 improve the efficiency of the photodetector 105 in detecting the power of the second optical signal. The second optical signal is completely reflected by the beam splitter 107, so that the device 100 for adjusting the wavelength can completely isolate the received second optical signal and the outputted first optical signal.
第三透镜110，所述第三透镜110配置为将所述光源101输出的汇聚光束转换为平行光束。所述第三透镜110与所述镀有膜层的滤波元件102位于处于 同一光学轴线的所述光源101的两侧。The third lens 110, the third lens 110 is configured to convert the convergent light beam output by the light source 101 into a parallel light beam. The third lens 110 and the film-coated filter element 102 are located on both sides of the light source 101 on the same optical axis.
本申请实施例中，光源101，配置为产生第一光信号。In this embodiment of the present application, the light source 101 is configured to generate a first optical signal.
在一些实施例中，所述光源101为波长可调的光源；如波长可调谐的激光器。In some embodiments, the light source 101 is a wavelength-tunable light source; such as a wavelength-tunable laser.
镀有膜层的滤波元件102，配置为对所述第一光信号的背散射光信号进行滤波。The filter element 102 coated with a film layer is configured to filter the backscattered light signal of the first light signal.
在一些实施例中，所述镀有膜层的滤波元件102对不同波长的光信号的透过率不同。举例来说，具有第一波长的光信号经所述镀有膜层的滤波元件102之后，有A％的光信号能够透过所述镀有膜层的滤波元件102；具有第二波长的光信号经所述镀有膜层的滤波元件102之后，有B％的光信号能够透过所述镀有膜层的滤波元件102。In some embodiments, the filter element 102 coated with the film layer has different transmittances for optical signals of different wavelengths. For example, after the optical signal with the first wavelength passes through the film-coated filter element 102, A% of the optical signal can pass through the film-coated filter element 102; the light with the second wavelength After the signal passes through the film-coated filter element 102 , B% of the optical signal can pass through the film-coated filter element 102 .
背光监测探测器103，配置为检测经所述滤波元件后的背散射光信号的功率，所述功率与所述第一光信号的波长有关。The backlight monitoring detector 103 is configured to detect the power of the backscattered light signal after passing through the filter element, where the power is related to the wavelength of the first light signal.
在一些实施例中，在所述光源产生的第一光信号的功率固定的情况下，所述背光监测探测器103检测到的经所述滤波元件透射后的第一光信号的背散射光信号的功率的大小与所述第一光信号的波长有关。举例来说，所述光源产生的第一光信号的功率为X，在所述第一光信号的波长为第一波长的情况下，所述背光监测探测器103检测到的经所述滤波元件透射后的第一光信号的背散射光信号的功率为M；在所述第一光信号的波长为第二波长的情况下，所述背光监测探测器103检测到的经所述滤波元件透射后的第一光信号的背散射光信号的功率为N。In some embodiments, under the condition that the power of the first optical signal generated by the light source is fixed, the backscattered light signal of the first optical signal transmitted by the filter element detected by the backlight monitoring detector 103 The magnitude of the power is related to the wavelength of the first optical signal. For example, the power of the first optical signal generated by the light source is X, and when the wavelength of the first optical signal is the first wavelength, the filter element detected by the backlight monitoring detector 103 The power of the backscattered light signal of the transmitted first light signal is M; in the case where the wavelength of the first light signal is the second wavelength, the backscattered light signal detected by the backlight monitoring detector 103 is transmitted through the filter element The power of the backscattered optical signal of the last first optical signal is N.
光电探测器105，配置为检测所述用于调节波长的器件100之外的元件输出的第二光信号的功率。The photodetector 105 is configured to detect the power of the second optical signal output by the elements other than the device 100 for adjusting the wavelength.
在一些实施例中，所述光源101、所述镀有膜层的滤波元件102和所述背光监测探测器103位于同一光学轴线上，即所述光源101、所述镀有膜层的滤波元件102和所述背光监测探测器103设置于在同轴平台上。In some embodiments, the light source 101 , the film-coated filter element 102 and the backlight monitoring detector 103 are located on the same optical axis, that is, the light source 101 , the film-coated filter element 103 102 and the backlight monitoring detector 103 are arranged on a coaxial platform.
在一些实施例中，所述光源101、所述镀有膜层的滤波元件102和所述背 光监测探测器103封装于一个壳体内。In some embodiments, the light source 101, the filter element 102 coated with the film layer and the backlight monitoring detector 103 are packaged in a housing.
在一些实施例中，所述背光监测探测器103检测到的功率变化量包括：第一功率变化量和第二功率变化量；In some embodiments, the power variation detected by the backlight monitoring detector 103 includes: a first power variation and a second power variation;
所述第一功率变化量与所述第一光信号的波长变化有关，所述第二功率变化量与所述光源的偏置和调制电流有关。The first power variation is related to the wavelength variation of the first optical signal, and the second power variation is related to the bias and modulation current of the light source.
在一些实施中，所述背光监测探测器103检测到的功率变化量等于第一参数与所述第一功率变化量的乘积，与第二参数与所述第二功率变化量的乘积之和；如下公P＝α*P1+β*P2；In some implementations, the power variation detected by the backlight monitoring detector 103 is equal to the sum of the product of the first parameter and the first power variation and the product of the second parameter and the second power variation; The following formula P=α*P1+β*P2;
其中，P为所述背光监测探测器103检测到的功率变化量；P1为所述第一光信号的波长变化导致的功率变化量，即第一功率变化量；P2为所述光源的偏置和调制电流导致的功率的变化量，即第二功率变化量。α为第一参数，β为第二参数。这里，所述光源的偏置和调制电流导致功率的变化量通过调整所述光源产生的第一光信号的功率进行补偿。Among them, P is the power change amount detected by the backlight monitoring detector 103; P1 is the power change amount caused by the wavelength change of the first optical signal, that is, the first power change amount; P2 is the bias of the light source and the variation of the power caused by the modulation current, that is, the second power variation. α is the first parameter, and β is the second parameter. Here, the amount of power variation caused by the bias and modulation current of the light source is compensated by adjusting the power of the first optical signal generated by the light source.
在具体实施时，可先单独计算出所述第一光信号的波长变化量与波长变化导致的功率变化量(第一功率变化量)之间的关系，进而通过波长调节功能来反向调节光源的波长。再计算出光源的偏置和调制电流导致的功率的变化量(第二功率变化量)，通过调整所述光源的功率来补偿光源的偏置和调制电流导致的功率的变化量。如此，能够进一步计算出第一功率变化量和第二功率变化量之间的比例关系，进而能够计算出第一参数和第二参数。During specific implementation, the relationship between the wavelength change of the first optical signal and the power change (first power change) caused by the wavelength change can be separately calculated, and then the light source can be adjusted inversely through the wavelength adjustment function. wavelength. Then calculate the power variation (second power variation) caused by the bias of the light source and the modulation current, and adjust the power of the light source to compensate for the variation of the power caused by the bias of the light source and the modulation current. In this way, the proportional relationship between the first power change amount and the second power change amount can be further calculated, and then the first parameter and the second parameter can be calculated.
在具体实施时，可以先采用标准波长的光源确定光信号的波长变化量与波长变化导致的功率变化量之间的关系，并存储光信号的波长变化量与波长变化导致的功率变化量之间的关系。所述光信号的波长变化量与波长变化导致的功率变化量之间的关系，可以如图2所示，随着波长的增长，功率衰减量呈线性变大，即背光监测探测器103接收到的光信号的功率变小。当然，在一些实施例中，光信号的波长变化量与波长变化导致的功率变化量之间的关系也可以是：随着波长的增长，功率衰减量呈线性变小，即背光监测探测器103接收到的光信号的功率变大。In specific implementation, a standard wavelength light source can be used to determine the relationship between the wavelength change of the optical signal and the power change caused by the wavelength change, and store the relationship between the wavelength change of the optical signal and the power change caused by the wavelength change. Relationship. The relationship between the wavelength change of the optical signal and the power change caused by the wavelength change can be shown in FIG. 2 . As the wavelength increases, the power attenuation increases linearly, that is, the backlight monitoring detector 103 receives The power of the optical signal becomes smaller. Of course, in some embodiments, the relationship between the wavelength change of the optical signal and the power change caused by the wavelength change may also be: as the wavelength increases, the power attenuation decreases linearly, that is, the backlight monitoring detector 103 The power of the received optical signal becomes larger.
在一些实施例中，所述背光监测探测器103的功能可以由MPD实现，所述光电探测器105的功能可以由PD实现。In some embodiments, the function of the backlight monitoring detector 103 may be implemented by an MPD, and the function of the photodetector 105 may be implemented by a PD.
需要说明的是，本申请上述各实施例中，光源101、背光监测探测器103、镀有膜层的滤波元件102可封装于一个壳体内，光电探测器105可封装于一个壳体内，连接器109可封装于一个壳体内。第一透镜106、分光镜107、第二透镜108和第三透镜110可设置于同一个光学平台上；如根据上述元件的种类不同，可焊接或耦合连接到平台上。It should be noted that, in the above-mentioned embodiments of the present application, the light source 101, the backlight monitoring detector 103, and the filter element 102 coated with a film layer can be packaged in a housing, the photodetector 105 can be packaged in a housing, and the connector 109 can be enclosed in a housing. The first lens 106 , the beam splitter 107 , the second lens 108 and the third lens 110 can be arranged on the same optical platform; according to the types of the above-mentioned components, they can be welded or coupled to the platform.
本申请实施例提供的用于调节波长的器件可以包括两个光发射端口，两个光发射端口可以分别设置背光监测探测器器和光电探测器，以检测发射的光信号的功率；因此，本申请实施例实际提供的用于调节波长的器件为一种BOSA。与相关技术中图5所示的用于调节波长的器件相比，本申请实施例提供的用于调节波长的器件需要较少的元件、较低的制作工艺难度、较低的制作成本和较高的产能。The device for adjusting the wavelength provided by the embodiment of the present application may include two light emission ports, and the two light emission ports may be respectively provided with a backlight monitoring detector and a photodetector to detect the power of the emitted light signal; therefore, this The device for adjusting the wavelength actually provided by the application embodiment is a BOSA. Compared with the device for adjusting the wavelength shown in FIG. 5 in the related art, the device for adjusting the wavelength provided in the embodiment of the present application requires fewer components, lower manufacturing process difficulty, lower manufacturing cost and relatively low cost. high productivity.
以上所述，仅为本申请的具体实施方式，但本申请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申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims (12)

  1. 一种用于调节波长的器件，所述器件包括：A device for adjusting a wavelength, the device comprising:
    光源，配置为产生第一光信号；a light source configured to generate a first optical signal;
    镀有膜层的滤波元件，配置为对所述第一光信号的背散射光信号进行滤波；a filter element coated with a film layer, configured to filter the backscattered light signal of the first light signal;
    背光监测探测器，配置为检测经所述滤波元件后的背散射光信号的功率，所述功率与所述第一光信号的波长有关。The backlight monitoring detector is configured to detect the power of the backscattered light signal after passing through the filter element, and the power is related to the wavelength of the first light signal.
  2. 根据权利要求1所述的器件，其中，所述光源包括：波长可调谐的激光器。The device of claim 1, wherein the light source comprises a wavelength tunable laser.
  3. 根据权利要求1所述的器件，其中，所述滤波元件对所述第一光信号的背散射光信号的透过率与所述第一光信号的波长有关。The device of claim 1, wherein the transmittance of the filter element to the backscattered light signal of the first optical signal is related to the wavelength of the first optical signal.
  4. 根据权利要求1所述的器件，其中，所述器件还包括：连接器和光电探测器；The device of claim 1, wherein the device further comprises: a connector and a photodetector;
    所述连接器与所述元件连接，所述元件产生的第二光信号经所述连接器入射至所述光电探测器；The connector is connected to the element, and the second optical signal generated by the element is incident to the photodetector through the connector;
    所述光电探测器，配置为检测所述用于调节波长的器件之外的元件输出的第二光信号的功率。The photodetector is configured to detect the power of the second optical signal output by the element other than the device for adjusting the wavelength.
  5. 根据权利要求4所述的器件，其中，所述器件还包括：第一透镜，所述第一透镜配置为将经所述连接器输入的第二光信号转化为平行光束。The device of claim 4, wherein the device further comprises: a first lens configured to convert the second optical signal input through the connector into a parallel light beam.
  6. 根据权利要求5所述的器件，其中，所述器件还包括：分光镜，所述分光镜配置为将经所述第一透镜的第二光信号全部反射至所述光电探测器。6. The device of claim 5, wherein the device further comprises: a beam splitter configured to fully reflect the second optical signal through the first lens to the photodetector.
  7. 根据权利要求6所述的器件，其中，所述器件还包括：第二透镜，所述第二透镜设置于所述分光镜与所述光电探测器之间，配置为对经所述分光镜反射后的第二光信号进行汇聚。The device according to claim 6, wherein the device further comprises: a second lens, the second lens is disposed between the beam splitter and the photodetector, and is configured to reflect the beam passing through the beam splitter The latter second optical signal is aggregated.
  8. 根据权利要求1所述的器件，其中，所述器件还包括：The device of claim 1, wherein the device further comprises:
    第三透镜，所述第三透镜配置为将所述光源产生的第一光信号进行汇聚，以使汇聚后的第一光信号输出至所述器件之外的元件。A third lens, where the third lens is configured to converge the first optical signal generated by the light source, so that the converged first optical signal is output to an element outside the device.
  9. 根据权利要求1所述的器件，其中，所述光源、所述滤光片和所述背光监测探测器封装于壳体内。The device of claim 1, wherein the light source, the filter, and the backlight monitoring detector are packaged within a housing.
  10. 根据权利要求1至9任一项所述的器件，其中，所述光源、所述滤光片和所述背光监测探测器位于同一光学轴线上。9. The device of any one of claims 1 to 9, wherein the light source, the filter and the backlight monitoring detector are located on the same optical axis.
  11. 根据权利要求1至9任一项所述的器件，其中，所述背光监测探测器检测到的功率变化量包括：第一功率变化量和第二功率变化量；The device according to any one of claims 1 to 9, wherein the power variation detected by the backlight monitoring detector comprises: a first power variation and a second power variation;
    所述第一功率变化量与所述第一光信号的波长变化有关，所述第二功率变化量与所述光源的偏置和调制电流有关。The first power variation is related to the wavelength variation of the first optical signal, and the second power variation is related to the bias and modulation current of the light source.
  12. 根据权利要求11所述的器件，其中，所述背光监测探测器检测到的功率变化量等于第一参数与所述第一功率变化量的乘积，与第二参数与所述第二功率变化量的乘积之和。The device according to claim 11, wherein the power variation detected by the backlight monitoring detector is equal to the product of the first parameter and the first power variation, and the second parameter and the second power variation The sum of the products of .
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