Tungsten disulfide-chitosan film as optical pulse and amplitude modulator in C-band region

Ahmad, Harith and Ooi, Shok Ing and Yusoff, Norazriena and Lim, Hwee San and MatJafri, Mohd Zubir and Thambiratnam, Kavintheran and Tiu, Zian Cheak (2019) Tungsten disulfide-chitosan film as optical pulse and amplitude modulator in C-band region. Laser Physics, 29 (10). p. 105102. ISSN 1054-660X, DOI https://doi.org/10.1088/1555-6611/ab3bcc.

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Official URL: https://doi.org/10.1088/1555-6611/ab3bcc


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.

Item Type: Article
Uncontrolled Keywords: amplitude modulation; chitosan; fibre lasers; pulse modulation; Q-switched; tungsten disulfide
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science > Department of Physics
Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 19 May 2020 01:51
Last Modified: 19 May 2020 01:51
URI: http://eprints.um.edu.my/id/eprint/24330

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