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A tunable and reconfigurable microwave photonic filter based on two cascaded modulators and a dispersive medium
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2008 (English)In: Optics Communications, ISSN 0030-4018, E-ISSN 1873-0310, Vol. 281, no 22, 5550-5554 p.Article in journal (Refereed) Published
Abstract [en]

A novel tunable and reconfigurable microwave photonic filter based on two cascaded modulators and a dispersive medium is proposed, theoretically discussed and experimentally demonstrated. A single-wavelength LD and a modulator (either a Mach-Zehnder modulator or a phase modulator which can avoid the do bias drift problem) are used to obtain a multi-wavelength optical source. By adjusting the modulation frequency and the bias voltage on the modulators, the wavelength spacing and the relative amplitude of the optical tones change, thus making the filter tunable and reconfigurable. The experimental results show that the proposed filters have good tunability and reconfigurability and the mainlobe-to-sidelobe ratio of around 25 dB is achieved.

Place, publisher, year, edition, pages
2008. Vol. 281, no 22, 5550-5554 p.
Keyword [en]
Microwave photonics, Filter, Mach-Zehnder modulator, Phase modulator, Chromatic dispersion, bragg gratings
Identifiers
URN: urn:nbn:se:kth:diva-17909DOI: 10.1016/j.optcom.2008.08.006ISI: 000260285500008OAI: oai:DiVA.org:kth-17909DiVA: diva2:335954
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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