Yu, S.
, Jung, H.
, Briles, T.
, Srinivasan, K.
and Papp, S.
(2019),
Photonic-crystal-reflector nano-resonators for Kerr-frequency combs, ACS Photonics, [online], https://doi.org/10.1021/acsphotonics.9b00578
(Accessed September 20, 2024)
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Photonic-crystal-reflector nano-resonators for Kerr-frequency combs
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Abstract
We demonstrate Kerr-frequency-comb generation with photonic-crystal-reflector (PCR) resonators, which is nanofabricated in a Fabry-Perot geometry. The group-velocity-dispersion (GVD) engineered photonic-crystal reflectors counteract the strong normal GVD of rectangular waveguide fabricated on a thin, 450-nm silicon nitride device layer. The reflectors provide the resonators with both the high optical quality factor and anomalous GVD required for Kerr-comb generation. We report design, fabrication, and characterization of devices in the 1550-nm wavelengths bands, including the GVD spectrum and quality factor. Moreover, we report Kerr-comb generation by exciting the devices with a continuous-wave laser. The versatility of PCRs enables a general design principle and a common device infrastructure for Kerr-nonlinear- resonator processes, opening new possibilities for manipulation of light. Visible and multi- spectral-band resonators appear to be natural extensions of the PCR approach.Citation
ACS Photonics
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Journals
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Keywords
frequency combs, integrated photonics, Kerr effect, nonlinear optics, photonic crystals
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Created July 8, 2019, Updated March 25, 2024