4.5 Article

Noise Comparison of RF Photonic Filters Based on Coherent and Incoherent Multiwavelength Sources

Journal

IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 24, Issue 14, Pages 1236-1238

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2012.2201712

Keywords

Microwave photonic filters; noise measurement; optical frequency combs; phase noise

Funding

  1. Naval Postgraduate School under the National Security Science and Engineering Faculty Fellowship Program [N00244-09-1-0068]
  2. Marie Curie Fellowship [PIOF 234996]

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A filtered microwave photonic (MWP) link implemented with an optical frequency comb as a multitap optical source offers a significant improvement in noise characteristics when compared to a spectrally sliced broadband incoherent source with the same number of taps and identical tap delay. Our results show that frequency combs also enable a better use of the optical bandwidth for filtering with minimum noise-induced fluctuations. These results highlight the potential of optical frequency comb technology to operate over large distances in MWP filter links.

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