上海交通大学 区域光纤通信网与新型光通信系统国家重点实验室, 上海 200240
全光调制器在全光信号处理和通信等全光应用中起着重要的作用。主要研究了基于MoS2-PVA薄膜实现的全光调制器。此外, 也验证了WSe2-PVA薄膜也可实现全光调制。该器件利用热光效应, 结合偏振干涉实现了全光调制, 得到了长时间稳定输出的调制信号。将980 nm的脉冲信号作为控制光, MoS2或WSe2吸收光产生热量, 使薄膜的折射率发生改变, 从而改变1 550 nm信号光的偏振态, 实现980 nm控制光对1 550 nm光的调制。得到的MoS2-PVA薄膜全光调制器的上升沿时间为526 μs。
全光器件 非线性光学材料 光开关器件 相位调制 all-optical devices nonlinear optical materials optical switching devices phase modulation 红外与激光工程
2019, 48(1): 0103003
Author Affiliations
Abstract
State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
The all-optical approach plays an important role in ultrafast all-optical signal processing, and the all-fiber scheme has a wide application in optical communications. In this letter, we investigate an all-optical modulator using few-layer molybdenum disulfide (MoS2)-polyvinyl alcohol (PVA) thin films based on the thermo-optic effect and obtain a long-time stable modulated output by applying polarization interference. By absorbing the injected 980 nm pump (control light), MoS2 generates heat, changes the refractive index of MoS2, and modulates the polarization of light. The obtained thermal all-optical modulator has a rise time of 526 μs.
230.1150 All-optical devices 160.4330 Nonlinear optical materials 130.4815 Optical switching devices Chinese Optics Letters
2018, 16(2): 020003
