Wavelength-division multiplex network synchronous digital hierarchy optical channel performance detecting device

Abstract

The invention discloses a light channel property detecting device of wavelength division multiplex network SDH; it resolves problems that current WDM system can not provide multiple channel detection and more property detection. The light channel property detecting device of the invention includes at least one channel, every channel includes: high speed deserializing port which is used to pick up clock and data from data received, and convert high speed serial data to low speed parallel data; synchronous detection module which is used to synchronize the parallel data received by high speed deserializing port to output; spending process module which is used to process data received by synchronous detection module; random access memory module which is used to store the result of spending process module for reading of later process module. The invention realizes multiple channel detection at the same time, and supports more property detection, easy to update, it possesses characters of low cost, low power, and little volume and high reliability.

Description

technical field [0001] The invention relates to a synchronous digital series (Synchronous Digital Hierarchy, SDH) optical channel performance detection device, in particular to wavelength division multiplexing (Wave Division Multiplexing, WDM) transmission equipment in the communication field. Background technique [0002] With the continuous development of communication technology, not only the complexity of the communication system is getting higher and higher, but also people's requirements for communication are getting higher and higher, not only to be able to transmit business, but also to ensure the safe and efficient transmission of business; not only to know the business Communication quality also requires management and maintenance of the network. In a word, the requirements for Quality of Service (QOS) are getting higher and higher. [0003] SDH is an advanced transmission system developed in the 1990s and currently widely used. It adopts Time Division Multiplexin...

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Problems solved by technology

[0028] However, with the continuous development of the WDM system, people are not satisfied with the performance detection of B1 / J0, and hope to provide more performance monitoring such as MS AIS, K1 / K2 bytes, etc. The original system cannot meet the requirements of the system

[0029] If multi-channel monitoring is required, multiple B1 / J0 chips and multiple CDR (clock and data recovery) chips need to be used, which occupy a large area and consume a lot of power. At the same time, it is necessary to modify the FPGA logic and replace a larger FPGA module. 08

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