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- W3165400812 abstract "Microcombs-optical frequency combs generated in microresonators-have advanced tremendously in the past decade, and are advantageous for applications in frequency metrology, navigation, spectroscopy, telecommunications, and microwave photonics. Crucially, microcombs promise fully integrated miniaturized optical systems with unprecedented reductions in cost, size, weight, and power. However, the use of bulk free-space and fiber-optic components to process microcombs has restricted form factors to the table-top. Taking microcomb-based optical frequency synthesis around 1550 nm as our target application, here, we address this challenge by proposing an integrated photonics interposer architecture to replace discrete components by collecting, routing, and interfacing octave-wide microcomb-based optical signals between photonic chiplets and heterogeneously integrated devices. Experimentally, we confirm the requisite performance of the individual passive elements of the proposed interposer-octave-wide dichroics, multimode interferometers, and tunable ring filters, and implement the octave-spanning spectral filtering of a microcomb, central to the interposer, using silicon nitride photonics. Moreover, we show that the thick silicon nitride needed for bright dissipative Kerr soliton generation can be integrated with the comparatively thin silicon nitride interposer layer through octave-bandwidth adiabatic evanescent coupling, indicating a path towards future system-level consolidation. Finally, we numerically confirm the feasibility of operating the proposed interposer synthesizer as a fully assembled system. Our interposer architecture addresses the immediate need for on-chip microcomb processing to successfully miniaturize microcomb systems and can be readily adapted to other metrology-grade applications based on optical atomic clocks and high-precision navigation and spectroscopy." @default.
- W3165400812 created "2021-06-07" @default.
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- W3165400812 date "2021-05-26" @default.
- W3165400812 modified "2023-10-13" @default.
- W3165400812 title "Towards integrated photonic interposers for processing octave-spanning microresonator frequency combs" @default.
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- W3165400812 doi "https://doi.org/10.1038/s41377-021-00549-y" @default.
- W3165400812 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8155053" @default.
- W3165400812 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34039954" @default.
- W3165400812 hasPublicationYear "2021" @default.
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