All fiber multiwavelength Tm-doped double-clad fiber laser assisted by four-wave mixing in highly nonlinear fiber and Sagnac loop mirror

Ahmad, Harith and Ahmed, Mahmoud Hazzaa M. and Samion, Muhamad Zharif and Harun, Sulaiman Wadi (2020) All fiber multiwavelength Tm-doped double-clad fiber laser assisted by four-wave mixing in highly nonlinear fiber and Sagnac loop mirror. Optics Communications, 456. p. 124589. ISSN 0030-4018

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Official URL: https://doi.org/10.1016/j.optcom.2019.124589

Abstract

A four-wave mixing (FWM) based multi-wavelength laser based on a double-cladding thulium-doped fiber laser (DC-TDFL) is proposed and demonstrated. A highly nonlinear fiber (HNLF) in conjunction with a Sagnac loop mirror formed by polarization maintaining fibers (PMFs) is used to induce the FWM effect as well as to mitigate gain-competition in the DC-TDFL. This increases the number of lasing wavelengths that can be generated. Approximately 35, 55, and 68 stable lasing lines are achieved within 10 dB, 20 dB, and 28 dB bandwidths by adjusting the polarization controllers. A uniform channel spacing of 0.38 nm is obtained with minimal wavelength drifts and power fluctuations of 0.056 nm and 2.8 dB. This is, to the best of the author's knowledge, the first demonstration of large numbers of lasing channels in the 1.97μm wavelength region from a DC-TDFL. © 2019

Item Type: Article
Uncontrolled Keywords: Fiber laser; Multiwavelength fiber laser; Double-cladding thulium-doped fiber laser
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Faculty of Science > Dept of Physics
Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre
Depositing User: Mr Jenal S
Date Deposited: 05 Jul 2013 09:06
Last Modified: 07 Nov 2019 08:18
URI: http://eprints.um.edu.my/id/eprint/6769

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