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Photonic RF spectral filters based on transversal filters with Kerr microcombs of varying free spectral ranges

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posted on 18.02.2020 by David Moss, mengxi tan, xingyuan xu, Jiayang Wu, Roberto Morandotti, Arnan Mitchell

Integrated Kerr microcombs are emerging as a powerful tool as sources of multiple wavelength channels for photonic RF and microwave signal processing mainly in the context of transversal filters. They offer a compact device footprint, very high versatility, large numbers of wavelengths, and wide Nyquist bands. Here, we review recent progress on Kerr microcomb-based photonic RF and microwave reconfigurable filters, based both on transversal filter methods and on RF to optical bandwidth scaling. We compare and contrast results achieved with wide comb spacing combs (200GHz) with more finely spaced (49GHz) microcombs. The strong potential of optical micro-combs for RF photonics applications in terms of functions and integrability is also discussed.

Index Terms—Microwave photonics, micro-ring resonators.

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Email Address of Submitting Author

dmoss@swin.edu.au

ORCID of Submitting Author

0000-0001-5195-1744

Submitting Author's Institution

swinburne university

Submitting Author's Country

Australia

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