Special Section on Microwave Photonics: Deep Interactions between Microwaves and Lightwaves

Reconfigurable microwave photonic filter based on polarization modulation

[+] Author Affiliations
Enming Xu, Peili Li

Nanjing University of Posts and Telecommunications, School of Opto-Electronic Engineering, No. 9 Wenyuan Road, Nanjing 210023, China

Shilong Pan

Nanjing University of Aeronautics and Astronautics, Key Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, 29 Yudao Street, Nanjing 210016, China

Opt. Eng. 55(3), 031120 (Dec 09, 2015). doi:10.1117/1.OE.55.3.031120
History: Received August 15, 2015; Accepted November 10, 2015
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Abstract.  A reconfigurable microwave photonic filter based on a polarization modulator (PolM) is proposed and experimentally demonstrated. The PolM together with a polarization controller (PC) and a polarization beam splitter (PBS) implements two complementary intensity modulations in two separated branches. Then, optical components are inserted in the two branches to realize a bandpass filter and an allpass filter, respectively. When the two branches are combined by a second PBS, a filter with a frequency response that equals the subtraction of the frequency responses of the allpass filter and bandpass filter is achieved. By adjusting the PCs placed before the second PBS, a notch filter with a tunable notch depth or a bandpass filter can be achieved.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Enming Xu ; Shilong Pan and Peili Li
"Reconfigurable microwave photonic filter based on polarization modulation", Opt. Eng. 55(3), 031120 (Dec 09, 2015). ; http://dx.doi.org/10.1117/1.OE.55.3.031120


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