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An optical cross based multiplexing 40Gbps system and method thereof

A technology of multiplexing and optical crossover, applied in the field of optical communication systems, can solve problems such as data dislocation, and achieve the effect of simple implementation method

Inactive Publication Date: 2005-06-01
FENGHUO COMM SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the problem of data misalignment, the present invention proposes a method for solving data misalignment by using optical crossover, that is, performing data crossover in the optical domain

Method used

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  • An optical cross based multiplexing 40Gbps system and method thereof
  • An optical cross based multiplexing 40Gbps system and method thereof
  • An optical cross based multiplexing 40Gbps system and method thereof

Examples

Experimental program
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Embodiment Construction

[0030] The optical domain data cross unit provides a complete solution to the data misalignment problem in the bit interleaved multiplexing mode.

[0031] Its technical solutions are as Figure 4 As shown, the functional description of each component is as follows:

[0032] The 10Gbps frame processor at the sending end ① needs to insert the logical channel number for the 10Gbps signal of this channel to distinguish it from other channels. A logical channel identifier identifying the channel number can be inserted using a certain byte of the vacant overhead of the 10Gbps frame, for example, inserting 01H (hex) for channel 1, inserting 02H... for channel 2, and so on. It can also be realized in other ways, generally speaking, as long as the receiving end can distinguish the 4 signal data when receiving;

[0033] 4:1 multiplexer ②, complete the bit interleaved multiplexing of 4 channels of 10Gbps signals to form 40Gbps signals;

[0034] 1:4 splitter ③, complete the function of...

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Abstract

The present invention is bit interpolating and multiplexing method of forming 40 Gbps optical communication system. In the 40 Gbps signal receiving direction, four 10 Gbps electric signals are first shunted in the shunt and the 10 Gbps signals have channel dislocation. The four 10 Gbps electric signals are then processed in frame processor to detect the channel dislocation relation, which is maintained until the electric to optical conversion. The optical domain data crossing treatment locates in the last stage, that is after 10 Gbps electric to optical conversion, and through the data crossing in optical domain, the channel dislocation relation is corrected.

Description

technical field [0001] The present invention relates to an optical communication system and its method for forming 40Gbps signal by bit interleaving and multiplexing. Background technique [0002] In a high-speed optical communication system, high-speed signals are usually formed by interleaving and multiplexing time-division multiplexing (TDM) with several low-speed signals. For example, in the traditional SDH transmission network, the rate levels from bottom to top are STM-1, STM-4, STM-16, STM-64, STM-256..., and the corresponding rates are 155Mbit / s and 622Mbit / s respectively , 2488Mbit / s, 9.953Gbit / s, 39.812Gbit / s……. The STM-n (n>1) signal is obtained by performing 4:1 byte interleaved multiplexing (Byte Interleaved) on the STM-n-1 signal. Similar to the method of byte interleaved multiplexing, there is also a method of bit interleaved multiplexing. When multi-channel low-speed signals are multiplexed into high-speed signals, one bit from each channel of low-speed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J14/00
Inventor 曹云杨宁叶波徐俊波陈德华何建明
Owner FENGHUO COMM SCI & TECH CO LTD