Improvement of the extinction ratio of a Mach Zehnder interferometer filter

A novel structure of a Mach–Zehnder interferometer filter is proposed and demonstrated. The interferometer is structured by adding an optical isolator to the two outputs of the conventional Mach–Zehnder interferometer. The characteristic of the transmission spectrum is studied theoretically and expe...

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Bibliographic Details
Published in:Microwave and optical technology letters 2004-09, Vol.42 (5), p.420-422
Main Authors: Huang, Yonglin, Dong, Xingfa, Li, Jie, Dong, Xiaoyi
Format: Article
Language:English
Subjects:
extinction ratio
filter
Mach-Zehnder interferometer
optical isolator
WDM
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Summary:A novel structure of a Mach–Zehnder interferometer filter is proposed and demonstrated. The interferometer is structured by adding an optical isolator to the two outputs of the conventional Mach–Zehnder interferometer. The characteristic of the transmission spectrum is studied theoretically and experimentally. The extinction ratio of the novel interferometer filter is improved greatly in comparison with that of a conventional Mach–Zehnder interferometer filter with the same parameters. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 42: 420–422, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20323
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.20323