Graphene oxide (GO) ultrathin film can be wafer-scale deposited by spin coating, can be patterned by laser interference lithography and oxygen plasma etching, can be thinned atomically (0.26 nm/min) and oxidized by ozone treatment, and is a relatively transparent and low-refractive-index material compared to pristine graphene. All those unique properties prompt us to realize a low-loss (), high-extinction-ratio (19 dB), and narrowband (0.425 nm) GO/silicon hybrid waveguide Bragg reflector by transferring 7-nm-thick GO gratings () atop a silicon strip waveguide. Unlike a sidewall-corrugated strip waveguide Bragg reflector that generally exhibits distorted corrugation profiles and is sensitive to fabrication errors, the as-realized GO-grating-covered strip waveguide Bragg reflector exhibits a stable reflecting wavelength and controllable reflection bandwidth that can be well predicted by numerical simulations.
© 2017 Optical Society of AmericaFull Article | PDF Article
17 November 2017: A typographical correction was made to the author listing.
More Like This
Zhengliang Ren, Qiang Kan, Guangzhao Ran, Chaoyuan Jin, Lijun Yuan, Xingyuan Wang, Li Tao, Hongyan Yu, Lianxue Zhang, Weixi Chen, Ke He, Ren-Min Ma, Jiaoqing Pan, and Wei Wang
Opt. Lett. 42(11) 2134-2137 (2017)
Huiye Qiu, Jianfei Jiang, Ping Yu, Tingge Dai, Jianyi Yang, Hui Yu, and Xiaoqing Jiang
Opt. Lett. 41(11) 2450-2453 (2016)
Huiye Qiu, Jianfei Jiang, Ping Yu, Jianyi Yang, Hui Yu, and Xiaoqing Jiang
Opt. Lett. 42(19) 3912-3915 (2017)