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Continuously Tunable Flat-Passband Microwave Photonic Notch Filter Based on Primary and Secondary Tap Distribution Impulse Response

Wang, Y., Chan, Erwin H. W., Wang, Xudong, Feng, Xinhuan and Guan, Bai-Ou (2015). Continuously Tunable Flat-Passband Microwave Photonic Notch Filter Based on Primary and Secondary Tap Distribution Impulse Response. IEEE Photonics Journal,7(1).

Document type: Journal Article
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IRMA ID 75039815xPUB824
Title Continuously Tunable Flat-Passband Microwave Photonic Notch Filter Based on Primary and Secondary Tap Distribution Impulse Response
Author Wang, Y.
Chan, Erwin H. W.
Wang, Xudong
Feng, Xinhuan
Guan, Bai-Ou
Journal Name IEEE Photonics Journal
Publication Date 2015
Volume Number 7
Issue Number 1
ISSN 1943-0655   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-84923247802
Total Pages 12
Place of Publication United States of America
Publisher Institute of Electrical and Electronics Engineers
HERDC Category C1 - Journal Article (DIISR)
Abstract Abstract:
A new microwave photonic signal processor that has the ability to realize a continuously tunable high-resolution notch filter response is presented. It is based on designing the filter impulse response to have a primary and secondary tap distribution. With a proper design on the tap amplitudes, the notch filter passband can be flattened. The filter notch frequency can be also continuously tuned by controlling the phase shift of the secondary taps via a diffraction-based Fourier-domain optical processor. The notch filter has a robust response and high signal-to-noise-ratio (SNR) performance. Experimental results demonstrate that the new microwave photonic notch filter can simultaneously realize a flat passband of only a 1-dB ripple, a large free spectral range of 4.7 GHz, and a notch depth of over 40 dB while tuning the notch frequency.
Keywords Frequency response
Microwave phontonics
Optical signal processing
DOI http://dx.doi.org/10.1109/JPHOT.2015.2393874   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)


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