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

Author(s):  
David Moss ◽  
mengxi tan ◽  
xingyuan xu ◽  
Jiayang Wu ◽  
Roberto Morandotti ◽  
...  

<p><b>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. </b></p> <p><a><b><i>Index Terms</i>—Microwave photonics, micro-ring resonators.</b></a></p>

2020 ◽  
Author(s):  
David Moss ◽  
mengxi tan ◽  
xingyuan xu ◽  
Jiayang Wu ◽  
Roberto Morandotti ◽  
...  

<p><b>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. </b></p> <p><a><b><i>Index Terms</i>—Microwave photonics, micro-ring resonators.</b></a></p>


2021 ◽  
Author(s):  
David Moss

Abstract 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 present our 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.


2020 ◽  
Author(s):  
David Moss

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.


2021 ◽  
Author(s):  
David Moss

<p>Soliton crystal micro-combs are powerful tools as sources of multiple wavelength channels for radio frequency (RF) signal processing. They offer a compact device footprint, large numbers of wavelengths, very high versatility, and wide Nyquist bandwidths. Here, we demonstrate integral order RF signal processing functions based on a soliton crystal micro-comb, including a Hilbert transformer and first- to third-order differentiators. We compare and contrast results achieved and the tradeoffs involved with varying comb spacing, tap design methods, as well as shaping methods. </p>


2021 ◽  
Author(s):  
David Moss

Integrated Kerr micro-combs are a powerful source of multiple wavelength channels for photonic radio frequency (RF) and microwave signal processing, particularly for transversal filter systems. They offer significant advantages featuring a compact device footprint, high versatility, large numbers of wavelengths, and wide Nyquist bands. We review progress photonic RF and microwave high bandwidth temporal signal processing based on Kerr micro-combs with comb spacings from 49GHz to 200GHz. We focus on integral and fractional Hilbert transforms, differentiators as well as integrators. The future potential of optical micro-combs for RF photonic applications in terms of functionality and ability to realize integrated solutions is also discussed.


2021 ◽  
Author(s):  
mengxi tan ◽  
xingyuan xu ◽  
David Moss

Abstract Soliton crystal micro-combs are powerful tools as sources of multiple wavelength channels for radio frequency (RF) signal processing. They offer a compact device footprint, large numbers of wavelengths, very high versatility, and wide Nyquist bandwidths. Here, we demonstrate integral order RF signal processing functions based on a soliton crystal micro-comb, including a Hilbert transformer and first- to third-order differentiators. We compare and contrast results achieved and the tradeoffs involved with varying comb spacing, tap design methods, as well as shaping methods.


2020 ◽  
Author(s):  
David Moss

Integrated Kerr micro-combs are a powerful source for generating multiple wavelength channels to achieve photonic radio frequency (RF) and microwave signal processing, particularly in the context of transversal filters. They offer competitive advantages including a compact device footprint, high versatility, large numbers of wavelengths, and wide Nyquist bands. Here, we review recent progress on Kerr micro-comb-based photonic RF and microwave high bandwidth temporal signal processing, including integral and fractional Hilbert transforms, differentiators as well as integrators. The strong potential of optical micro-combs for RF photonic applications in terms of functions and integrability is also discussed.


2021 ◽  
Author(s):  
David Moss

Integrated Kerr micro-combs are a powerful source of multiple wavelength channels for photonic radio frequency (RF) and microwave signal processing, particularly for transversal filter systems. They offer significant advantages featuring a compact device footprint, high versatility, large numbers of wavelengths, and wide Nyquist bands. We review progress photonic RF and microwave high bandwidth temporal signal processing based on Kerr micro-combs with comb spacings from 49GHz to 200GHz. We focus on integral and fractional Hilbert transforms, differentiators as well as integrators. The future potential of optical micro-combs for RF photonic applications in terms of functionality and ability to realize integrated solutions is also discussed.


2020 ◽  
Author(s):  
David Moss

Integrated Kerr micro-combs are a powerful source for generating multiple wavelength channels to achieve photonic radio frequency (RF) and microwave signal processing, particularly in the context of transversal filters. They offer competitive advantages including a compact device footprint, high versatility, large numbers of wavelengths, and wide Nyquist bands. Here, we review recent progress on Kerr micro-comb-based photonic RF and microwave high bandwidth temporal signal processing, including integral and fractional Hilbert transforms, differentiators as well as integrators. The strong potential of optical micro-combs for RF photonic applications in terms of functions and integrability is also discussed.


2020 ◽  
Author(s):  
David Moss

Integrated Kerr micro-combs are a powerful source for generating multiple wavelength channels to achieve photonic radio frequency (RF) and microwave signal processing, particularly in the context of transversal filters. They offer competitive advantages including a compact device footprint, high versatility, large numbers of wavelengths, and wide Nyquist bands. Here, we review recent progress on Kerr micro-comb-based photonic RF and microwave high bandwidth temporal signal processing, including integral and fractional Hilbert transforms, differentiators as well as integrators. The strong potential of optical micro-combs for RF photonic applications in terms of functions and integrability is also discussed.


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