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19 January 2011 A SOA-based high Q microwave photonic filter
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Proceedings Volume 7986, Passive Components and Fiber-Based Devices VII; 79860W (2011)
Event: Asia Communications and Photonics Conference and Exhibition, 2010, Shanghai, Shanghai, China
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.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Enming Xu, Lipei Li, Fei Wang, Yuan Yu, Xiang Li, Xinliang Zhang, and Dexiu Huang "A SOA-based high Q microwave photonic filter", Proc. SPIE 7986, Passive Components and Fiber-Based Devices VII, 79860W (19 January 2011);

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