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Research on All-optical Buffer System Based on Dual Loop Coupling

Author: LiuZuo
Tutor: ShengXinZhi
School: Beijing Jiaotong University
Course: Physical Electronics
Keywords: Optical Communication Technology Bicyclic coupled optical buffer A multi-wavelength signal buffer system A semiconductor optical amplifier Cross-gain modulation
CLC: TN929.1
Type: Master's thesis
Year: 2011
Downloads: 14
Quote: 0
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Abstract


In recent years , the development of optical communication technology very quickly , but at the network nodes , still need to first light signals into electrical signals for processing , electronic bottlenecks in the development of optical communication . Optical buffer , as a key component of the all-optical network , has become a hot research topic in the international . The bicyclic coupling all-optical the buffer (DLOB) has many of the advantages of compact structure, simple read and write operations , adjustable range . In this paper, on the basis of previous work , to build a multi-wavelength signal caching system , experimental study on which the presence of a number of issues . Completed the following major tasks : 1. Built multi - wavelength signal caching system , caching experiments successfully . Realized the eight wavelengths 2.5Gb / s signal cache 5 laps 8.91μs and four input wavelength signal by choosing one experiment cache 18 laps , and the experimental results were analyzed . 2 to erbium-doped fiber amplifier ( EDFA ) , the wavelength division multiplexer (WDM) and an adjustable attenuator (VOA) to form a feedback loop structure , to achieve the control of the size of the EDFA gain , the linear range and noise . Adjusting frame fiber grating reflection center wavelength of the fiber Bragg grating (FBG) is adjusted to achieve the purpose of adjusting the different wavelength signals in the input signal power equalization . Noise characteristics of semiconductor optical amplifier (SOA) , the gain saturation and cross-gain modulation effect experimental study the SOA power equalization and the role of experimental research . Cache experiment system to build a multi-wavelength signal components measured , clear the performance parameters ;

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Lightwave communications, laser communications
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