Reconfigurable microwave photonic transversal filter based on an integrated optical micro-comb source

We investigate the application of integrated micro-combs in RF photonic systems and demonstrate a microwave photonic intensity differentiator based on a Kerr optical comb generated by a compact integrated micro-ring resonator. The on-chip Kerr optical comb is CMOS-compatible and contains a large number of comb lines, which can serve as a high-performance multi-wavelength source for the transversal filter, thus greatly reduce the cost, size, and complexity of the system. The operation principle is theoretically analyzed, and experimental demonstrations of fractional-, first-, second-, and third-order differentiation functions based on the principle are presented.

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Photonic RF and Microwave Photonic Channelizers based on Kerr Micro-combs

10.22541/au.163880748.87224586/v1 ◽

2021 ◽

Author(s):

David Moss

Keyword(s):

Signal Detection ◽

Recent Work ◽

Ring Resonator ◽

Microwave Signal ◽

Optical Frequency ◽

Potential Cost ◽

Microwave Photonic ◽

Wide Range ◽

Integrated Optical ◽

Reduced Complexity

We review recent work on broadband RF channelizers based on integrated optical frequency Kerr micro-combs combined with passive micro-ring resonator filters, with microcombs having channel spacings of 200GHz and 49GHz. This approach to realizing RF channelizers offers reduced complexity, size, and potential cost for a wide range of applications to microwave signal detection.

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High bandwidth RF and microwave photonic signal processing using Kerr micro-combs

10.22541/au.162307893.38500826/v1 ◽

2021 ◽

Author(s):

David Moss

Keyword(s):

Signal Processing ◽

Recent Progress ◽

Microwave Signal ◽

Hilbert Transforms ◽

Powerful Source ◽

Microwave Photonic ◽

Transversal Filter ◽

Large Numbers ◽

High Bandwidth

Integrated Kerr micro-combs, a powerful source of many wavelengths for photonic RF and microwave signal processing, are particularly useful for transversal filter systems. They have many advantages including a compact footprint, high versatility, large numbers of wavelengths, and wide bandwidths. We review recent progress on photonic RF and microwave high bandwidth temporal signal processing based on Kerr micro-combs with spacings from 49-200GHz. We cover integral and fractional Hilbert transforms, differentiators as well as integrators. The potential of optical micro-combs for RF photonic applications in functionality and ability to realize integrated solutions is also discussed.

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