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

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3 Author(s)
Minhyup Song ; Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA ; Torres-Company, V. ; Weiner, A.M.

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.

Published in:

Photonics Technology Letters, IEEE  (Volume:24 ,  Issue: 14 )