Enhanced four-wave mixing with MoS <sub>2</sub> on a silicon waveguide
Yaojing Zhang, Li Tao, Yi Dan, Jianbin Xu, Hon Ki Tsang
Abstract
Abstract MoS 2 is a layered quasi-2D material that can enhance effective third-order optical nonlinearity of waveguides. In this paper, we measured the optical loss of MoS 2 on silicon waveguides and compared the conversion efficiencies of four-wave mixing (FWM) in silicon waveguides with and without MoS 2 on the top cladding. Hybrid integration of the few-layer MoS 2 produced about 4 dB enhancement in the idler output of FWM. The Kerr coefficient of MoS 2 was obtained as (2.7 ± 0.2) × 10 −16 m 2 W −1 . The refractive index of MoS 2 was obtained from the characteristics of grating couplers.
Topics & Concepts
Cladding (metalworking)Materials scienceFour-wave mixingSiliconGratingOpticsRefractive indexMixing (physics)WaveguideSilicon photonicsOptoelectronicsNonlinear opticsPhysicsLaserComposite materialQuantum mechanicsPhotonic and Optical DevicesAdvanced Fiber Laser TechnologiesAdvanced Fiber Optic Sensors