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G. NING1,* , J. Q. ZHOU1, P. SHUM1
We demonstrate a switchable microwave-photonic notch filter based on a half waveplate, a single-drive intensity modulator and 490 m high-birefringence (Hi-Bi) fiber. The low pass notch filter response can be switched to bandpass response and vice-versa by tuning the half waveplate. Thanks to the orthogonal states of polarization the Hi-Bi fiber, the configuration is free from the problems of optically coherent interference. An expression for the filter transfer function is derived. Measured results match the calculated results and show a notch rejection greater than 40 dB.
Microwave photonic, Switchable, Half waveplate, MZ intensity modulator, Optical signal processing.
G. NING, J. Q. ZHOU, P. SHUM, Switchable microwave photonic notch filter based on a half waveplate and a single-drive intensity modulator, Optoelectronics and Advanced Materials - Rapid Communications, 1, 11, November 2007, pp.588-590 (2007).
Submitted at: Oct. 22, 2007
Accepted at: Oct. 31, 2007
Optoelectronics and Advanced Materials - Rapid Communications
(2024): Impact Factor = 0.4 - Journal Citation Reports (Clarivate Analytics, 2025)
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