Device and method for recognizing spectrum amplitude code mark through frequency sweeping coherent detection

Abstract

The invention discloses an information treatment device which is mainly used for the generation, demodulation and reception of optical mark information in an optical mark exchange system, wherein the information treatment device comprises a mark generator, a frequency sweeping local oscillation light source and a mark detection and reception part. The frequency sweeping local oscillation light source mainly realizes the coherent detection recognition of a spectrum amplitude code mark via a distributed feedback laser with frequency demodulated through a sawtooth wave function and receives the mark through a balanced detection method. The spectrum amplitude code mark is recognized through the method, thus a recognition unit structure of the traditional spectrum amplitude code mark can be greatly simplified and the receiving quality of marked signals is improved, and the spectral loss of the system can be reduced effectively and the actual operability of the system is improved.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to an implementation method and device for identifying spectrum amplitude code marks based on coherent detection technology. Background technique [0002] Since the beginning of the 21st century, with the rapid development of Internet services, the explosive growth of IP data volume and business volume has put forward higher requirements for communication networks. Although the current transmission capacity of the optical communication backbone network has reached the Tb / s level, as an indispensable part of the optical communication network - the switching node still needs to perform optical / electrical / optical conversion and electrical domain processing for data packets. Since the speed of electronic exchange and electronic information processing has reached the limit, this greatly restricts the transmission speed of the existing communication network, resulting in an "electroni...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: to overcome the shortcomings of the existing SAC label switching network, the design and operation of the label recognition unit is complicated, the light splitting loss is too large, the cost is too high, and the implementation is difficult, etc., and a method of using coherent detection technology to identify A new method of SAC optical label exchange, so that the label recognition unit can avoid the loss of light splitting, the system structure is simple, and the implementation cost is low

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