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A 40G optical transmission system bit error rate detection method and apparatus

A technology of optical transmission and bit error rate, applied in transmission systems, digital transmission systems, electromagnetic wave transmission systems, etc.

Inactive Publication Date: 2008-05-14
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But it can only test the system with 10Gb / s interface, but it can't do anything about the SFI-5 (Serdes Framer Interface Level 5) interface specified by the multi-source agreement (MSA) of the current 40Gb / s sending and receiving module.

Method used

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  • A 40G optical transmission system bit error rate detection method and apparatus
  • A 40G optical transmission system bit error rate detection method and apparatus
  • A 40G optical transmission system bit error rate detection method and apparatus

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Embodiment Construction

[0087] figure 1 A schematic diagram showing the circuit structure of the test device used for testing the bit error rate of the 40G optical transmission path by the method of the present invention. figure 1 The circuit in it includes several main parts, 2.5Gb / s bit error tester, 2.5Gb / s optical receiver, 2.5Gb / s optical transmitter, 16-bit shift register, selector, 40Gb / s sending and receiving module , 40Gb / s optical channel, control circuit. exist figure 1 In the circuit shown, the 2.5Gb / s optical receiver is used to convert the 2.5Gb / s optical signal sent by the 2.5Gb / s error tester into an electrical signal, and at the same time recover the 2.5GHz line clock; the 2.5Gb / s electrical signal 16 channels of parallel 2.5Gb / s data with different phases are generated through the 16-bit shift register; the 16 channels of 2.5Gb / s electrical signals are sent to the sending and receiving module for multiplexing and electrical / optical conversion, and the generated 40G optical The si...

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Abstract

The invention relates to a method and device of detecting optical-fiber transmission code error of 40 Gb / s SDH or NX40Gb / s DWDM system in high speed digital optical communication system, using common low-price 2.5 Gb / s code error tester to make 40 Gb / s optical transmission test, and also able to make code error property testing on 40 G transmit-receive module or 40 G SDH or DWDM device, besides, able to test SFI-5 interface and other devices. The circuit of the device is simple, low-cost and easy to implement.

Description

technical field [0001] The present invention relates to a 40Gb / s Synchronous Digital Hierarchy (SDH) or N×40Gb / s Dense Wavelength Division Multiplexing (DWDM) system optical fiber transmission error detection method in a high-speed digital optical communication system and an error detection method used in the method device. Background technique [0002] At present, the optical transmission systems put into commercial use are all 10Gb / s and lower rate optical transmission systems, and the test instruments that can provide optical transmission performance are all at 10Gb / s and lower rates. With the market's increasing requirements for the information capacity of transmission systems, the development of optical transmission systems based on 40Gb / s and above rates such as 80Gb / s and 160Gb / s has always been the goal that people are constantly pursuing. However, as the rate increases, the technical difficulties encountered are also increasing. In terms of optical transmission, d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/08H04B10/02H04B10/12H04B10/079H04L1/00
Inventor 吕建新杨名谢秋红
Owner FENGHUO COMM SCI & TECH CO LTD