Apparatus and method for generating spectral amplitude code label by using adjustable optical filter

Abstract

The invention discloses an apparatus and method for generating a spectral amplitude code label by using an adjustable optical filter and belongs to the technical field of optical communication. The apparatus comprises a frequency-sweeping laser source generating device, the adjustable optical filter, and an electro-optical modulator. The frequency-sweeping laser source generating device generates a frequency-sweeping laser source with constant power and operating frequency linearly varying with time and inputs the frequency-sweeping laser source into the adjustable optical filter. The frequency sweeping velocity of the frequency-sweeping laser source is consistent with electric label signal rate. The adjustable optical filter performs frequency selection on the frequency-sweeping laser source according to a preset frequency interval so as to obtain a SAC initial light source and input the SAC initial light source into the electro-optical modulator. The electro-optical modulator generates a SAC optical label signal after performing electric label signal modulation on the SAC initial light source. The method comprises: generating a frequency-sweeping laser source with constant power and operating frequency linearly varying with time based on the electric label signal; performing frequency selection on the frequency-sweeping laser source according to the preset frequency interval so as to obtain the SAC initial light source and then generating the SAC optical label signal based on same. The apparatus and the method are used by an optical label exchange system and are low in complexity and high in transmission rate.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a device and method for generating spectral amplitude code marks by using an adjustable optical filter. Background technique [0002] 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 "electronic bottleneck" in data processing and transmission...

AI Technical Summary

Problems solved by technology

This leads to the SAC optical tag signal switching system having too complex a tag recognition unit structure, the tag rate can never be increased to Gb / s, the implementation cost is too high, the optical splitting loss is too large, the system carries a payload rate that is too low, and the payload modulation method is single, etc. shortcoming

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