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Research on the High Speed Tunable Optical Comb Filter and Its Control System

Author: ZhangFei
Tutor: JinXiaoFeng
School: Zhejiang University
Course: Physical Electronics
Keywords: Dimmable comb filter Transparent ferroelectric ceramics Drive control system USB communication
CLC: TN713
Type: Master's thesis
Year: 2010
Downloads: 112
Quote: 1
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Abstract


Optical comb filter as a special kind of wavelength selective light filter , optical fiber communication network is very extensive , including: multi-wavelength fiber laser , dense wavelength division multiplexing system multiplexing and demultiplexing , and photoelectric measurements , etc. . This thesis makes dynamic optical networking systems based on transparent ferroelectric ceramics , high-speed adjustable comb filter , the center wavelength and channel isolation rapid dynamic adjustable channel mobile switching and signal quick adjustment modified action more simple and effective . This paper presents a central wavelength and channel isolation of high-speed tunable optical comb filter working principle and structure of the program . Analysis of the optical path of the optical comb components between the match in order to improve the performance of the filter specific based on the completion of the development of tunable optical comb filter . Theoretically quantitative analysis of the crystal and the angle of the wave plate error isolation , and proposed that by controlling the drive voltage to the electro-optic crystal to compensate for the influence of the angle error , improve the comb filter channel isolation . This paper design a tunable optical comb filter drive control system to overcome the impact of the temperature of the center wavelength of the filter and channel isolation . The control system , the control chip on the characterization of the filter state of the probe light signal analysis and processing, and thereby control the drive voltage to maintain the stability of the center wavelength and isolation . Finally , experimental verification of the feasibility of the drive control system , to achieve a good temperature stability of the comb filter center wavelength . Compared with the traditional optical comb filter , the tunable optical comb filter has a simple structure , fast response , polarization independent , low insertion loss, stable and reliable performance .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Basic electronic circuits > Filtering techniques,the filter
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