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Integrated optical module error code tester based on PAM4

A technology of bit error testing and optical modules, which is applied in the field of optical communication, can solve problems such as difficulty in ensuring high-speed signal integrity and large loss of PAM4 signals, so as to facilitate product market promotion, avoid signal integrity problems and economical problems, The effect of ensuring integrity

Active Publication Date: 2020-02-11
CHINA ELECTRONIS TECH INSTR CO LTD
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Problems solved by technology

At the same time, with the development of PAM4 technology, more and more optical modules begin to use PAM4 modulation to increase the transmission rate, and the SMA interface optical module error tester is separated from the interface circuit and the error test module, and the transmission rate is more than 50Gbps or the length is relatively long. When the PRBS pattern is long, there is a large loss in the PAM4 signal, and it is difficult to ensure the integrity of the high-speed signal even with expensive high-speed connection cables

Method used

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  • Integrated optical module error code tester based on PAM4
  • Integrated optical module error code tester based on PAM4
  • Integrated optical module error code tester based on PAM4

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Embodiment Construction

[0023] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0024] It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates that There are features, steps, operations, devices, components and / or combinations thereof.

[0025] As mentioned above in the present invention, in the process of using the optical module fo...

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Abstract

The invention discloses an integrated optical module error code tester based on PAM4. The integrated optical module error code tester comprises a main control unit, an interface unit and an upper computer. By integrating peripheral circuits such as a communication interface, a power supply circuit, an I / O interface and the like into a main control unit, the SoC performs power supply configurationand I / O signal definition according to different optical module types. The interface unit is connected with the main control unit through the pluggable connector, only the interface unit needs to be replaced when different optical module tests are carried out, and corresponding peripheral circuits do not need to be customized. The optical module interface circuit and the error code test module areboth integrated in the interface unit, and no cable is needed for connection, so that the loss in the test process is reduced, and NRZ / PAM4 signals with higher rate and PRBS code patterns with longerlength can be tested.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a PAM4-based integrated optical module error tester. Background technique [0002] With the large-scale application of big data, cloud computing and the Internet of Things, data traffic has grown rapidly. As a popular signal transmission technology for high-speed signal interconnection in next-generation data centers, PAM4 is widely used in 200G / 400G optical modules. In the formulation process of the new generation of 200G / 400G interface standards, the general demand is to increase the data rate of each pair of differential lines to more than 50Gbps. If NRZ modulation technology is still used, since each symbol period is less than 20ps, for The time margin of the transceiver chip and transmission link, as well as the board and wiring of the printed board are extremely demanding, so the adoption of PAM4 technology has almost become an inevitable trend. [0003] In t...

Claims

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Application Information

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IPC IPC(8): H04B10/079H04L1/20
CPCH04B10/07953H04B2210/517H04L1/203H04B10/0799H04B10/524H04B10/541
Inventor 钮鑫胡亚平黄文南李涛
Owner CHINA ELECTRONIS TECH INSTR CO LTD
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