WO2014101781A1 - 一种单纤双向光模块的测试系统及测试方法 - Google Patents

一种单纤双向光模块的测试系统及测试方法 Download PDF

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WO2014101781A1
WO2014101781A1 PCT/CN2013/090494 CN2013090494W WO2014101781A1 WO 2014101781 A1 WO2014101781 A1 WO 2014101781A1 CN 2013090494 W CN2013090494 W CN 2013090494W WO 2014101781 A1 WO2014101781 A1 WO 2014101781A1
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module
optical
tested
fiber
port
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PCT/CN2013/090494
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French (fr)
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李岩
穆磊
王飚
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武汉电信器件有限公司
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Publication of WO2014101781A1 publication Critical patent/WO2014101781A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/073Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an out-of-service signal
    • H04B10/0731Testing or characterisation of optical devices, e.g. amplifiers

Definitions

  • the present invention relates to the field of optical communications, and in particular, to a test system and a test method for a single-fiber bidirectional optical module.
  • the single-fiber bidirectional optical module is an optical module that uses one optical fiber for transmitting and receiving, in the production process of the optical module, the optical fiber needs to be replaced when testing the emission index and the receiving index, which causes inconvenience to the production, and may also pollute.
  • the fiber end face affects the test results.
  • the fiber replacement process also affects the test efficiency. If you can ensure that the single-fiber bidirectional optical module does not replace the optical fiber during the test, it will not only reduce the number of end face wipes, but also avoid end face contamination, and greatly improve production efficiency. Summary of the invention
  • the present invention provides a single-fiber bidirectional optical module test system and a test method based on a fiber optic circulator, that is, a fiber circulator is used to realize a single-fiber bidirectional optical module production test.
  • a test system for a single-fiber bidirectional optical module comprising: a BER tester, a light source, a module to be tested, a computer, a reducer, a fiber circulator, an optical splitter, an oscilloscope, and an optical power meter;
  • the BER tester, the module to be tested, the fiber circulator and the oscilloscope are sequentially connected, and the module to be tested is connected to the computer through a bus to implement a test system for transmitting parameters of the module;
  • the BER tester, the light source, the attenuator, the optical splitter, the optical fiber circulator, and the module to be tested are sequentially connected, the optical splitter is connected to the optical power meter, and the module to be tested is connected to the computer through the bus to implement a test system for receiving parameters of the module.
  • the fiber circulator has three ports a, b, and c, the optical splitter is connected to port a, the module to be tested is connected to port b, and the oscilloscope is connected to port c.
  • optical splitter is a 1 minute 2 optical splitter.
  • a method for testing a single-fiber bidirectional optical module comprising:
  • Step of testing the transmitting parameters of the module to be tested The BER tester sends an electrical signal to the module to be tested, and the light emitted from the module to be tested is input from the b port of the circulator, and the light is output to the oscilloscope by the c port with almost no loss (other ports) There is almost no light output at all, and the emitted parameters are read from the oscilloscope;
  • Step of testing the parameters to be tested by the module to be tested The errone meter emits an electrical signal to the light source, the light source illuminates through the attenuator, and the optical power meter reads the light power meter through the optical splitter, and the other light is input by the optical circulator a port. Almost without loss by b The port is output to the module to be tested (there is almost no light output at other ports), and the module to be tested converts the light into an electrical signal and returns it to the BER tester, which is used to test the receiving parameters;
  • the computer controls the module to be tested.
  • the single-fiber bidirectional optical module testing system and the testing method of the invention enable the optical module to receive both the emission index of the optical module and the receiving of the optical module during the testing process of the entire module without replacing the optical fiber.
  • the index effectively avoids the disadvantages caused by the measurement (such as end face pollution, etc.), which not only brings stability to the test results, but also improves the test efficiency.
  • Figure 1 shows the block diagram of the test system.
  • a test system for a single-fiber bidirectional optical module includes a BER tester, a light source, a module to be tested, a computer, an attenuator, a fiber circulator, a 1 minute 2 optical splitter, an oscilloscope, and an optical power meter; wherein, The code meter, the module to be tested, the fiber optic circulator and the oscilloscope are connected in turn, and the module to be tested is connected to the computer through the bus to realize the test system for transmitting the parameters of the module; the BER tester, the light source, the attenuator, the 1 minute 2 optical splitter, the optical fiber The circulator and the module to be tested are connected in sequence, and the 1:2 optical branching meter is connected to the optical power meter. The module to be tested is connected to the computer through the bus to realize the test system for receiving the parameters of the module.
  • the fiber optic circulator has three ports a, b, and c, the optical splitter is connected to the a port, the module to be tested is connected to the b port, and the oscilloscope is connected to the c port.
  • test principle and steps of the above test system are:
  • Step of testing the transmitting parameters of the module to be tested The BER tester sends an electrical signal to the module to be tested, and the light emitted from the module to be tested is input from the b port of the fiber circulator, and the light is output to the oscilloscope by the c port with almost no loss. , reading the transmitted parameters from the oscilloscope;
  • Steps of testing the parameters to be tested by the module to be tested The errone meter emits an electrical signal to the light source, the light source illuminates through the attenuator, and the optical power meter reads through the 1 minute 2 optical splitter, and the other path is made by the fiber circulator. a port input, the light is output to the module to be tested by the b port with almost no loss, and the module to be tested converts the light into an electrical signal and returns it to the errone meter, so that it is used for testing the connection.
  • the computer controls the module to be tested.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)

Abstract

本发明在于提供一种基于光纤环形器的单纤双向光模块测试系统和测试方法,该单纤双向光模块的测试系统包括误码仪、光源、待测模块、电脑、衰减器、光纤环形器、光分路器、示波器和光功率计,组成实现模块发射参数和接收参数的测试系统。采用本发明的测试系统和测试方法,使得在整过模块的测试过程中,不需要更换光纤,就可以既能测光模块的发射指标,又能测量光模块的接收指标,有效的避免了在测量中带来的不利因素(比如端面污染等),这样不仅对测试的结果带来稳定性,同时也提高了测试效率。

Description

一种单纤双向光模块的测试系统及测试方法 技术领域
本发明涉及光通信领域, 尤其涉及一种单纤双向光模块的测试系统及测试方法。
背景技术
因为单纤双向光模块是采用一根光纤进行收发的光模块, 所以在光模块生产过程中, 测试 发射指标和接收指标时需要更换光纤, 这样就给生产带来了不便, 而且还有可能污染光纤端面, 影响测试结果, 同时, 更换光纤过程也会影响测试效率。 如果能够保证单纤双向光模块在测试 过程中不更换光纤, 这样不仅会减少端面擦拭次数, 避免端面污染, 也会大大地提高生产效率。 发明内容
为解决上述问题, 本发明提供一种基于光纤环形器的单纤双向光模块测试系统和测试方 法, 即采用光纤环形器来实现单纤双向光模块生产测试。
本发明的技术方案是这样实现的:
一种单纤双向光模块的测试系统, 其特征在于: 包括误码仪、 光源、 待测模块、 电脑、 衰 减器、 光纤环形器、 光分路器、 示波器和光功率计;
其中, 误码仪、 待测模块、 光纤环形器和示波器依次连接, 待测模块通过总线连接到电脑, 实 现模块发射参数的测试系统;
误码仪、 光源、 衰减器、 光分路器、 光纤环形器、 待测模块依次连接, 光分路器连接光功 率计, 待测模块通过总线连接到电脑, 实现模块接收参数的测试系统。
进一步地, 所述光纤环形器有 a、 b、 c三个端口, 光分路器连接端口 a, 待测模块连接端 口 b, 示波器连接端口 c。
进一步地, 所述光分路器为 1分 2光分路器。
一种单纤双向光模块的测试方法, 其特征在于包括:
测试待测模块发射参数的步骤: 误码仪发出电信号给待测模块, 从待测模块发出的光从环形器 的 b端口输入, 光几乎毫无损失地由 c端口输出给示波器(其他端口处几乎没有光输出), 从示 波器中读出发射的参数;
测试待测模块接收参数的步骤: 误码仪发出电信号给光源, 光源发光经过衰减器衰减, 并 通过光分路器一路给光功率计读数, 另一路光由光环形器 a端口输入, 光几乎毫无损失地由 b 端口输出给待测模块 (其他端口处几乎没有光输出), 待测模块将光转换成电信号返回给误码 仪, 这样用来测试接收参数;
上述方法中, 电脑对待测模块进行控制。
采用本发明所述的单纤双向光模块测试系统和测试方法, 使得在整过模块的测试过程中, 不需要更换光纤, 就可以既能测光模块的发射指标, 又能测量光模块的接收指标, 有效的避免 了在测量中带来的不利因素(比如端面污染等), 这样不仅对测试的结果带来稳定性, 同时也提 高了测试效率。
附图说明
图 1 测试系统结构框图。
具体实施方式
下面通过实施例, 并结合附图, 对本发明的技术方案作进一步地说明, 显然, 所描述的实 施例仅仅是本发明的部分实施方式。
实施例 1
本发明的一种单纤双向光模块的测试系统, 包括误码仪、 光源、 待测模块、 电脑、 衰减器、 光纤环形器、 1分 2光分路器、 示波器和光功率计; 其中, 误码仪、 待测模块、 光纤环形器和 示波器依次连接, 待测模块通过总线连接到电脑, 实现模块发射参数的测试系统; 误码仪、 光 源、衰减器、 1分 2光分路器、光纤环形器、待测模块依次连接, 1 : 2光分路计器连接光功率计, 待测模块通过总线连接到电脑, 实现模块接收参数的测试系统。
光纤环形器有 a、 b、 c三个端口, 光分路器连接 a端口, 待测模块连接 b端口, 示波器连 接 c端口。
上述测试系统的测试原理和步骤为:
1、 测试待测模块发射参数的步骤: 误码仪发出电信号给待测模块, 从待测模块发出的光从 光纤环形器的 b端口输入, 光几乎毫无损失地由 c端口输出给示波器, 从示波器中读出发射的 参数;
2、 测试待测模块接收参数的步骤: 误码仪发出电信号给光源, 光源发光经过衰减器衰减, 并通过 1分 2光分路器一路给光功率计读数, 另一路光由光纤环形器 a端口输入, 光几乎毫无 损失地由 b端口输出给待测模块, 待测模块将光转换成电信号返回给误码仪, 这样用来测试接 收参数;
上述步骤中, 电脑对待测模块进行控制。
应理解, 上述实施例仅是为充分说明本发明而所举的较佳的实施例, 本发明的保护范围不 限于此。 本技术领域的技术人员在本发明基础上所作的等同替代或变换, 均在本发明的保护范 围之内。 本发明的保护范围以权利要求书为准。

Claims

权利要求书
1. 一种单纤双向光模块的测试系统, 其特征在于: 包括误码仪、 光源、 待测模块、 电脑、 衰 减器、 光纤环形器、 光分路器、 示波器和光功率计;
其中, 误码仪、 待测模块、 光纤环形器和示波器依次连接, 待测模块通过总线连接到电脑, 实 现模块发射参数的测试系统;
误码仪、 光源、 衰减器、 光分路器、 光纤环形器、 待测模块依次连接, 光分路器连接光功率计, 待测模块通过总线连接到电脑, 实现模块接收参数的测试系统。
2. 如权利要求 1所述的单纤双向光模块的测试系统, 其特征在于: 所述光纤环形器有 a、 b、 c 三个端口, 光分路器连接 a端口, 待测模块连接 b端口, 示波器连接 c端口。
3. 如权利要求 1所述的单纤双向光模块的测试系统, 其特征在于: 所述光分路器为 1分 2光 分路器。
4. 一种单纤双向光模块的测试方法, 其特征在于包括:
测试待测模块发射参数的步骤: 误码仪发出电信号给待测模块, 从待测模块发出的光从光纤环 形器 b端口输入, 光几乎毫无损失地由光纤环形器 c端口输出给示波器, 从示波器中读出发射 的参数;
测试待测模块接收参数的步骤: 误码仪发出电信号给光源, 光源发光经过衰减器衰减, 并通过 光分路器一路给光功率计读数, 另一路光由光纤环形器 a端口输入, 光几乎毫无损失地由光纤 环形器 b端口输出给待测模块, 待测模块将光转换成电信号返回给误码仪, 这样用来测试接收 参数。
PCT/CN2013/090494 2012-12-28 2013-12-26 一种单纤双向光模块的测试系统及测试方法 WO2014101781A1 (zh)

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CN103368641B (zh) * 2013-06-19 2016-03-02 中磊电子(苏州)有限公司 光纤网络单元的测试设备及测试方法
CN105812052B (zh) * 2016-05-19 2018-08-21 大连藏龙光电子科技有限公司 一种光模块校准系统及方法
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