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Proceedings Paper

A SOA-based high Q microwave photonic filter
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Paper Abstract

We propose and experimentally demonstrate a novel all-optical microwave filter with high quality factor (Q). It is based on a recirculating delay line (RDL) loop in which a semiconductor optical amplifier (SOA) is followed by a tunable narrow-band optical filter and a 1x2 10:90 optical coupler. Converted signal used as a negative tap is generated through wavelength conversion employing the cross-gain modulation (XGM) of the amplified spontaneous emission (ASE) spectrum of the SOA. The converted signal can circulate in the RDL loop so that the proposed filter realizes a high Q factor response after photo-detection. The 1x2 10:90 coupler is employed to extract 10% optical power from the loop as output. A frequency response with a high Q factor of 543, a rejection ratio of 40 dB is experimentally demonstrated.

Paper Details

Date Published: 19 January 2011
PDF: 6 pages
Proc. SPIE 7986, Passive Components and Fiber-Based Devices VII, 79860W (19 January 2011); doi: 10.1117/12.888333
Show Author Affiliations
Enming Xu, Nanjing Univ. of Posts and Telecommunications (China)
Huazhong Univ. of Science & Technology (China)
Lipei Li, Nanjing Univ. of Posts and Telecommunications (China)
Fei Wang, Huazhong Univ. of Science & Technology (China)
Yuan Yu, Huazhong Univ. of Science & Technology (China)
Xiang Li, Huazhong Univ. of Science & Technology (China)
Xinliang Zhang, Huazhong Univ. of Science & Technology (China)
Dexiu Huang, Huazhong Univ. of Science & Technology (China)


Published in SPIE Proceedings Vol. 7986:
Passive Components and Fiber-Based Devices VII
Perry P. Shum, Editor(s)

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