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Device and method for automatically testing polarization extinction ratio of silicon photonic coherent receiver

A polarization extinction ratio, coherent receiver technology, applied in the field of optical communication, can solve the problems of low efficiency, cumbersome operation, time-consuming, etc., and achieve the effects of convenient operation, accurate test results, and simple structure

Inactive Publication Date: 2018-03-13
WUHAN TELECOMM DEVICES +1
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Problems solved by technology

However, the loss of coherent receiver based on silicon photonics is larger than that of traditional technology devices, and the photoelectric index of the device varies with wavelength; the polarization extinction ratio index of silicon photonics coherent receiver can be used to measure the immunity of the device. The polarization extinction ratio of the machine is manually tested, which requires an expensive single-wavelength tunable laser and a manual polarization controller, and then reads the current source display data through human eyes. The operation is cumbersome and the test results are low in accuracy and time-consuming. It is not high; so how to simply and accurately measure the polarization extinction ratio of silicon optical coherent receivers is extremely important for obtaining device indicators and subsequent large-scale mass production

Method used

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  • Device and method for automatically testing polarization extinction ratio of silicon photonic coherent receiver
  • Device and method for automatically testing polarization extinction ratio of silicon photonic coherent receiver
  • Device and method for automatically testing polarization extinction ratio of silicon photonic coherent receiver

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Embodiment

[0031] The present invention provides a device and method for automatically testing the polarization extinction ratio of a silicon optical coherent receiver. This scheme can realize the fully automatic test of the polarization extinction ratio index in the entire C-band of the silicon optical coherent receiver, and the required test environment does not require expensive equipment. Instrument, convenient test steps, excellent test accuracy.

[0032] The technical scheme adopted in the present invention: as figure 1 Shown is a structural schematic diagram of a device for automatically testing the polarization extinction ratio of a silicon optical coherent receiver disclosed by the present invention, and its structural block diagram is as follows:

[0033] In the block diagram, 1 is an adjustable broadband light source, 2 is an adjustable optical attenuator, 3 is an erbium-doped fiber amplifier, 4 is the first optical splitter, 5 is the first tunable filter, and 6 is the second ...

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Abstract

The invention relates to a testing device and method, belongs to the technical field of photo-communication, and particularly relates to a device and method for automatically testing a polarization extinction ratio of a silicon photonic coherent receiver. By the device and method, full-automated testing on a polarization extinction ratio index in a whole C waveband of the silicon photonic coherentreceiver can be realized, a required testing environment does not need precious instruments, testing steps are speedy, and testing precision is excellent.

Description

technical field [0001] The invention relates to a test device and method, which belong to the technical field of optical communication, in particular to a device and method for automatically testing the polarization extinction ratio of a silicon optical coherent receiver. Background technique [0002] With the great improvement of communication system signal transmission rate requirements and the application of digital signal processing and research on high-order optical modulation technology, coherent optical communication has become a research hotspot for high-speed and high-performance modern optical communication. Coherent optical communication not only greatly improves the spectral efficiency of the system, but also has better effects in terms of dispersion and nonlinear compensation and control due to the application of digital signal processing. The introduction of polarization multiplexing into the coherent detection system can further improve the system. In addition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/29
CPCH04B17/29
Inventor 黄敏陈宏刚胡蕾蕾龚正丁兰张博胡毅马卫东
Owner WUHAN TELECOMM DEVICES
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