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A tunable single-passband microwave photonic filter with positive and negative taps using a fiber Mach-Zehnder interferometer and phase modulation
2010 (English)In: Optics and Laser Technology, ISSN 0030-3992, E-ISSN 1879-2545, Vol. 42, no 1, 81-84 p.Article in journal (Refereed) Published
Abstract [en]

In this paper, a tunable single-passband microwave photonic filter with positive and negative taps based on phase modulation and a fiber Mach-Zehnder interferometer (FMZI)) is presented, theoretically analyzed and experimentally demonstrated. The FMZI as the slicing filter results in a single-bandpass characteristic for the presented filter, and by using phase modulation, a number of negative taps are generated, thus making the baseband resonance suppressed, which is desirable for microwave photonic filter's application. The wavelength spacing of the FMZI can be tuned by employing an optical variable delay line, making the present filter continuously tunable. A tunable single-passband microwave photonic filter without baseband resonance is achieved in the experiment. The present filter shows an extinction ratio of up to similar to 20dB and good tuning linearity.

Place, publisher, year, edition, pages
2010. Vol. 42, no 1, 81-84 p.
Keyword [en]
Fiber Mach-Zehnder interferometer, Microwave photonics, Phase modulation
Identifiers
URN: urn:nbn:se:kth:diva-18850DOI: 10.1016/j.optlastec.2009.05.001ISI: 000270637100012OAI: oai:DiVA.org:kth-18850DiVA: diva2:336897
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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He, Sailing

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