Tungsten disulfide coated side-polished fibre as polarisation state modulator in all-optical system

Document Type

Article

Publication Date

10-1-2022

Abstract

In this work, all-optical polarisation state modulation using a tungsten disulfide (WS2) coated side-polished fibre (SPF) as modulator is experimentally demonstrated. A bulk layer WS2 is exfoliated into a few-layer WS2 thin film using liquid phase exfoliation technique. The few-layer WS2 film is then coated onto a SPF to serve as an optical polarisation state modulator based on the thermo-optic effect. The rotation of the polarised signal light is controlled using a pump laser. Throughout the pump power range of 514.5 mW, the polarisation state of the polarised signal light has rotated similar to 70 degrees, with a minor ellipticity fluctuation of <6 degrees. The proposed experiment is carried out on the basis of the photon-modulate-photon principle and achieved all-optical modulation in a fibre laser system.

Keywords

Light polarisation, Modulation

Publication Title

IET Optoelectronics

Divisions

photonics

Funders

UOW Malaysia KDU [KDURG/2019/004],INTI International University and Colleges [INTI-FEQS01-13-2022]

Volume

16

Issue

5

Publisher

Institution of Engineering and Technology (IET)

Publisher Location

111 RIVER ST, HOBOKEN 07030-5774, NJ USA

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