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Optical Engineering • Open Access

Novel tunable microwave photonic notch filter with a variable polarization beamsplitter and a Hi-Bi coupler

Paper Abstract

We demonstrate a tunable microwave-photonic notch filter based on a variable polarization beamsplitter, a Hi-Bi coupler, and a variable time delay line. The configuration is free from the problems of optically coherent interference and chromatic dispersion. An expression for the filter transfer function is derived. Measured results match the calculated results and show a notch rejection greater than 35 dB. The notch frequency is continuously tunable by adjusting the time delay value. The scheme can operate over a wide range of optical carrier frequencies.

Paper Details

Date Published: 1 October 2005
PDF: 3 pages
Opt. Eng. 44(10) 100502 doi: 10.1117/1.2077287
Published in: Optical Engineering Volume 44, Issue 10
Show Author Affiliations
G. X. Ning, Nanyang Technological Univ. (Singapore)
Ping Shum, Nanyang Technological Univ. (Singapore)
Sheel Aditya, Nanyang Technological Univ. (Singapore)
Yandong Gong, Institute for Infocomm Research (Singapore)
Chao Lu, Institute for Infocomm Research (Singapore)


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