Journal article
4H-SiC microring resonators for nonlinear integrated photonics
Nanophotonic Devices, Department of Photonics Engineering, Technical University of Denmark1
Centre of Excellence for Silicon Photonics for Optical Communications, Centers, Technical University of Denmark2
Diode Lasers and LED Systems, Department of Photonics Engineering, Technical University of Denmark3
Department of Photonics Engineering, Technical University of Denmark4
Chinese Academy of Sciences5
We demonstrate enhanced four-wave mixing (FWM) in high-quality factor, high-confinement 4H-SiC microring resonators via continuous-wave FWM. With the large power buildup effect of the microring resonator, −21.7 dB FWM conversion efficiency is achieved with 79 mW pump power. Thanks to the strong light confinement in SiC-oninsulator (SiCOI) waveguides with submicrometer crosssectional dimensions, a high nonlinear parameter wγ of 7.4 0.9 W−1 m−1 is obtained, from which the nonlinear refractive index (n2) of 4H-SiC is estimated to be 6.0 0.6 × 10−19 m2∕W at the telecom wavelengths.
Besides, we are able to engineer the dispersion of a SiCOI waveguide to achieve 3 dB FWM conversion bandwidth of more than 130 nm. This work represents a step toward enabling all-optical signal processing functionalities using highly nonlinear SiCOI waveguides.
Language: | English |
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Year: | 2019 |
Pages: | 5784-87 |
ISSN: | 15394794 and 01469592 |
Types: | Journal article |
DOI: | 10.1364/OL.44.005784 |
ORCIDs: | 0000-0003-0163-9255 , Pu, Minhao and Ou, Haiyan |