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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 28, Iss. 3 — Feb. 1, 2010
  • pp: 262–269

Coherence-Free Microwave Photonic Bandpass Filter Using a Frequency-Shifting Recirculating Delay Line

Cibby Pulikkaseril, Erwin H. W. Chan, and Robert A. Minasian

Journal of Lightwave Technology, Vol. 28, Issue 3, pp. 262-269 (2010)


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Abstract

A new microwave photonic filter that realizes a high-resolution bandpass filter response with coherence-free operation and without the limitations of phase-induced intensity noise is presented in this paper. It is based on a frequency-shifting recirculating delay line, which can simultaneously achieve a multitap, high-resolution filter and a very large suppression of noise, while also enabling the use of a conventional narrow-linewidth laser source without suffering from coherent interference effects. Experimental results demonstrate a filter $Q$ value of 200 and an SNR improvement of 40.3 dB compared to conventional recirculating delay line structures.

© 2010 IEEE

Citation
Cibby Pulikkaseril, Erwin H. W. Chan, and Robert A. Minasian, "Coherence-Free Microwave Photonic Bandpass Filter Using a Frequency-Shifting Recirculating Delay Line," J. Lightwave Technol. 28, 262-269 (2010)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-28-3-262

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