[20p-E215-1~6] 4.2 Photonics Devices, Photonic Integrated Circuit and Silicon Photonics

▲ [20p-E215-2] All-optical control of light functionality in WS₂-coated microfiber knot resonator with high sensitivity

〇(M2)Xiaoli Wang¹, Heyuan Guan¹, Guowei Chen¹, Zijian Zhang¹, Hanguang Li¹, Jiangmeng Jiang¹, Wenguo Zhu¹, Jianhui Yu¹, Huihui Lu¹, Wentao Qiu¹, Jiangli Dong¹, Yunhan Luo¹, Jun Zhang², Zhe Chen^1,2 (1.Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Jinan University, Guangzhou 510632, China, 2.Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, Jinan University, Guangzhou, 510632, China)

Keywords:Optical microfiber, Microfiber knot resonator, Fiber-optic sensing

This paper realizes an all-optical control of light functionality by coating few layered WS₂ nanosheets onto MKR. An external pump light power could quasi-linearly tune the transmitted power because of the tunable refractive index properties of WS₂. By using a violet and red pump power, we acquire a high sensitivity corresponding with the variation rate of the transmitted power. The rise time is about 0.1s which can be better.