A SOA-based high Q microwave photonic filter

Enming Xu; Lipei Li; Fei Wang; Yuan Yu; Xiang Li; Xinliang Zhang; Dexiu Huang

doi:10.1117/12.888333

19 January 2011 A SOA-based high Q microwave photonic filter

Enming Xu, Lipei Li, Fei Wang, Yuan Yu, Xiang Li, Xinliang Zhang, Dexiu Huang

Proceedings Volume 7986, Passive Components and Fiber-Based Devices VII; 79860W (2011) https://doi.org/10.1117/12.888333
Event: Asia Communications and Photonics Conference and Exhibition, 2010, Shanghai, Shanghai, China

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.

Citation Download Citation

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); https://doi.org/10.1117/12.888333

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