Integrated frequency comb source based Hilbert transformer for wideband microwave photonic phase analysis

We demonstrate a photonic RF Hilbert transformer for broadband microwave in-phase and quadrature-phase generation based on an integrated frequency optical comb, generated using a nonlinear microring resonator based on a CMOS compatible, high-index contrast, doped-silica glass platform. The high qual...

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Bibliographic Details
Published in:Optics express 2015-08, Vol.23 (17), p.22087-22097
Main Authors: Nguyen, Thach G, Shoeiby, Mehrdad, Chu, Sai T, Little, Brent E, Morandotti, Roberto, Mitchell, Arnan, Moss, David J
Format: Article
Language:English
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Summary:We demonstrate a photonic RF Hilbert transformer for broadband microwave in-phase and quadrature-phase generation based on an integrated frequency optical comb, generated using a nonlinear microring resonator based on a CMOS compatible, high-index contrast, doped-silica glass platform. The high quality and large frequency spacing of the comb enables filters with up to 20 taps, allowing us to demonstrate a quadrature filter with more than a 5-octave (3 dB) bandwidth and an almost uniform phase response.
ISSN:1094-4087
1094-4087
DOI:10.1364/oe.23.022087