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Tungsten trioxide integrated all-fiber phase shifter


Citation

Affendy, N.B. and Abu Bakar, M.H. and Zainol Abidin, N.H. and Muhammad, F.D. and Mustapha Kamil, Y. (2023) Tungsten trioxide integrated all-fiber phase shifter. Optik, 281. art. no. 170795. ISSN 0030-4026

Abstract

This work proposes an all-fiber phase shifter based on tapered optical fiber spin coated with tungsten trioxide (WO3). Different WO3 coating thickness was tested by varying the spin coating time from 30 to 150 s at constant 1000 rpm. Evanescent field induced by the non-adiabatic taper generated thermal optic effect through interaction with the WO3 layer, which changed its refractive index and produced phase shifting effect. The optimum spin coating time of 120 s yielded maximum phase shift of 2.52 π with wavelength shift coefficient of 0.0859 nm/mW as 980 nm pump power was varied up to 220 mW. Integration of phase shifter in fiber laser cavity produced wavelength tuning with shift coefficient of about 0.06 nm/mW. This work presents a feasible all-fiber phase shifter with simple fabrication and operation that suits current need in communication field.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Faculty of Science
DOI Number: https://doi.org/10.1016/j.ijleo.2023.170795
Publisher: Elsevier BV
Keywords: Nanomaterial; Phase shifter; Thermal optic effect; Industry; Innovation and infrastructure
Depositing User: Mohamad Jefri Mohamed Fauzi
Date Deposited: 18 Nov 2024 03:22
Last Modified: 18 Nov 2024 03:22
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.ijleo.2023.170795
URI: http://psasir.upm.edu.my/id/eprint/108364
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