Abstract

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, $-21.7\mathrm{dB}$FWM conversion efficiency is achieved with 79 mW pump power. Thanks to the strong light confinement in SiC-on-insulator (SiCOI) waveguides with submicrometer cross-sectional dimensions, a high nonlinear parameter $w\gamma$ of $7.4\pm 0.9{\mathrm{W}}^{-1}{\mathrm{m}}^{-1}$ is obtained, from which the nonlinear refractive index ($n_2$) of 4H-SiC is estimated to be $(6.0\pm 0.6)\times {10}^{-19}{\mathrm{m}}^2/\mathrm{W}$ 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.

© 2019 Optical Society of America

High-confinement gallium nitride-on-sapphire waveguides for integrated nonlinear photonics

Erik Stassen, Minhao Pu, Elizaveta Semenova, Evgeniy Zavarin, Wsevolod Lundin, and Kresten Yvind
Opt. Lett. 44(5) 1064-1067 (2019)

High-Q microresonators integrated with microheaters on a 3C-SiC-on-insulator platform

Xi Wu, Tianren Fan, Ali A. Eftekhar, and Ali Adibi
Opt. Lett. 44(20) 4941-4944 (2019)

High-quality factor, high-confinement microring resonators in 4H-silicon carbide-on-insulator

Yi Zheng, Minhao Pu, Ailun Yi, Bingdong Chang, Tiangui You, Kai Huang, Ayman N. Kamel, Martin R. Henriksen, Asbjørn A. Jørgensen, Xin Ou, and Haiyan Ou
Opt. Express 27(9) 13053-13060 (2019)

Investigation of the electro-optic effect in high-Q 4H-SiC microresonators

Ruixuan Wang, Jingwei Li, Lutong Cai, and Qing Li
Opt. Lett. 48(6) 1482-1485 (2023)

Efficient wavelength conversion with low operation power in a Ta₂O₅-based micro-ring resonator

Chung-Lun Wu, Jen-Yang Huang, Ding-Hsin Ou, Ting-Wei Liao, Yi-Jen Chiu, Min-Hsiung Shih, Yuan-Yao Lin, Ann-Kuo Chu, and Chao-Kuei Lee
Opt. Lett. 42(23) 4804-4807 (2017)