Abstract:Induced photon correlations are directly demonstrated by exploring two coupled nonlinear processes in an integrated device. Using orthogonally polarized modes within an integrated microring cavity, phase matching of two different nonlinear four‐wave mixing processes is achieved simultaneously, wherein both processes share one target frequency mode, while their other frequency modes differ. The overlap of these modes leads to the coupling of both nonlinear processes, producing photon correlations. The nature of… Show more
“…This offers huge advantages over more conventional approaches including discrete multiple laser wavelength sources. Many breakthroughs have been reported with Kerr micro-combs, from innovative mode-locked lasers [49][50][51][52] to quantum optical photonic chips [53][54][55][56][57][58][59][60][61], ultrahigh bandwidth optical fiber data transmission [62][63][64], optical neural networks [65][66][67], integrated optical frequency synthesizers [68] and more, and have been extensively reviewed [47, 69 -76]. The success of these new CMOS platforms has motivated the search for even higher performing CMOS compatible platforms including as amorphous silicon [77] and silicon rich silicon nitride [78], searching for the ideal combination of low linear and nonlinear loss together with a high nonlinearity.…”
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.
“…This offers huge advantages over more conventional approaches including discrete multiple laser wavelength sources. Many breakthroughs have been reported with Kerr micro-combs, from innovative mode-locked lasers [49][50][51][52] to quantum optical photonic chips [53][54][55][56][57][58][59][60][61], ultrahigh bandwidth optical fiber data transmission [62][63][64], optical neural networks [65][66][67], integrated optical frequency synthesizers [68] and more, and have been extensively reviewed [47, 69 -76]. The success of these new CMOS platforms has motivated the search for even higher performing CMOS compatible platforms including as amorphous silicon [77] and silicon rich silicon nitride [78], searching for the ideal combination of low linear and nonlinear loss together with a high nonlinearity.…”
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.
“…They offer significant advantages over more traditional multi-wavelength sources. Many innovative applications have been reported based on integrated Kerr micro-combs, from filter-driven mode-locked lasers [49][50][51][52] to quantum optical photonic chips [53][54][55][56][57][58][59][60][61], ultrahigh bandwidth optical fiber data transmission [62][63][64], optical neural networks [65][66][67], integrated optical-frequency synthesizers [68]. Micro-combs have been extensively reviewed [47,[69][70][71][72][73][74][75][76].…”
“…They are generated by optical parametric oscillation in monolithic micro-ring resonators (MRRs) and offer significant advantages over more traditional multi-wavelength sources. Many cutting-RF and microwave photonic high bandwidth signal processing based on Kerr micro-comb sources Mengxi Tan, 1 Xingyuan Xu, 1,* Jiayang Wu, 1 Roberto Morandotti, 2 Arnan Mitchell, 3 and David J. Moss 1 edge applications have been demonstrated based on CMOS-compatible micro-combs, ranging from filter-driven modelocked lasers [49][50][51][52] to quantum physics [53][54][55][56][57][58][59][60][61]. Most recently, Kerr micro-combs have demonstrated their enormous potential as sources for ultrahigh bandwidth coherent optical fiber communications [62][63][64], optical neural networks [65][66][67], optical frequency synthesis [68], and have been reviewed extensively [47, 69 -76].…”
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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