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Proceedings Article

A SOA-based high Q microwave photonic filter

[+] Author Affiliations
Enming Xu

Nanjing Univ. of Posts and Telecommunications (China) and Huazhong Univ. of Science & Technology (China)

Lipei Li

Nanjing Univ. of Posts and Telecommunications (China)

Fei Wang, Yuan Yu, Xiang Li, Xinliang Zhang, Dexiu Huang

Huazhong Univ. of Science & Technology (China)

Proc. SPIE 7986, Passive Components and Fiber-Based Devices VII, 79860W (January 19, 2011); doi:10.1117/12.888333
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From Conference Volume 7986

  • Passive Components and Fiber-Based Devices VII
  • Perry P. Shum
  • Shanghai, China | December 08, 2010

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.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Enming Xu ; Lipei Li ; Fei Wang ; Yuan Yu ; Xiang Li, et al.
"A SOA-based high Q microwave photonic filter", Proc. SPIE 7986, Passive Components and Fiber-Based Devices VII, 79860W (January 19, 2011); doi:10.1117/12.888333; http://dx.doi.org/10.1117/12.888333


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