Tungsten disulfide-chitosan film as optical pulse and amplitude modulator in C-band region
Document Type
Article
Publication Date
1-1-2019
Abstract
A tungsten disulfide (WS2)-Chitosan film based optical modulator for operation in the C-band region is demonstrated. The integration of the WS2-Chitosan film into an erbium doped fiber laser cavity reveals high optical pulse and amplitude modulation efficiency due to the substantial nonlinear absorption properties of the WS2-Chitosan film. The strong thermo-optic effect exhibited by the WS2-Chitosan film enables optical amplitude modulation, with modulation efficiencies of 0.10 dB mW-1 over a pump power ranging from 0.01 mW to 130.10 mW. The proposed WS2-Chitosan based optical modulator has significant potential for integration and application into a multitude of optoelectronic systems. © 2019 Astro Ltd.
Keywords
amplitude modulation, chitosan, fibre lasers, pulse modulation, Q-switched, tungsten disulfide
Divisions
PHYSICS,photonics
Publication Title
Laser Physics
Volume
29
Issue
10
Publisher
IOP Publishing