| Wavelength Channel Bandwidth of Wavelength—Selective Devices |
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| 引用本文： | XIAOYan－ping WUYa－ming.Wavelength Channel Bandwidth of Wavelength—Selective Devices[J].上海大学学报(英文版),2001,5(1):48-52. |
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| 作者姓名： | XIAOYan－ping WUYa－ming |
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| 作者单位： | SchoolofCommunicationandInformationEngineering,ShanghaiUniversity,Shanghai200072,China |
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| 基金项目： | theNationalNaturalScienceFoundationofChina!
(6 97770 14 )，theQimingxingProjectofShanghaiMunicipal
CommissionofScienceandTec |
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| 摘 要： | Narrow bandwidth is a crocial factor in a high-performance wavelength-selective device(WSD).There are many different expressions to estimate bandwidths of many different WSDs.In this paper,we derive an important rule that the differential time delay between two coupling modes is the most important factor deciding the wavelength channel bandwidth for several different WSDs.This rule reveals that larger differential time delay between two coupling modes results in higher discrimination level of the operating wavelength.Based on the rule .a novel design of wavelength-selective coupler that has a bandwidth narrower than normal couplers is presented.
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| 关 键 词： | 光通信系统 波长导管带度 波长选择器件 |
| 收稿时间： | 7 April 2000 |
Wavelength channel bandwidth of wavelength-selective devices |
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| Yan-ping Xiao Master Candidate,Ya-ming Wu.Wavelength channel bandwidth of wavelength-selective devices[J].Journal of Shanghai University(English Edition),2001,5(1):48-52. |
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| Authors: | Yan-ping Xiao Master Candidate Ya-ming Wu |
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| Institution: | School of communication and Information Engineering, Shanghai University, |
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| Abstract: | Narrow bandwidth is a crucial factor in a high performance wavelength selective device(WSD). There are many different expressions to estimate bandwidths of many different WSDs. In this paper, we derive an important rule that the differential time delay between two coupling modes is the most important factor deciding the wavelength channel bandwidth for several different WSDs. This rule reveals that larger differential time delay between two coupling modes results in higher discrimination level of the operating wavelength. Based on the rule, a novel design of wavelength selective coupler that has a bandwidth narrower than normal couplers is presented. |
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| Keywords: | wavelength channel bandwidth wavelength selective device(WSD) differential time delay |
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