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arXiv · 1512.01741

Hilbert Transform based Quadrature Hybrid RF Photonic Coupler via a Micro-Resonator Optical Frequency Comb Source

Thach G. Nguyen·Mehrdad Shoeiby·Sai T. Chu·Brent E. Little·Roberto Morandotti·Arnan Mitchell·David J. Moss
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Abstract

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.

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Thach G. Nguyen, Mehrdad Shoeiby, Sai T. Chu, Brent E. Little, Roberto Morandotti, Arnan Mitchell, David J. Moss. 2015-12-06. Hilbert Transform based Quadrature Hybrid RF Photonic Coupler via a Micro-Resonator Optical Frequency Comb Source. https://doi.org/10.1364/oe.23.022087

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