A highly stable and switchable dual-wavelength laser using coupled microfiber Mach-Zehnder interferometer as an optical filter

Jasim, Ali Abdulhadi and Ahmad, Harith (2017) A highly stable and switchable dual-wavelength laser using coupled microfiber Mach-Zehnder interferometer as an optical filter. Optics & Laser Technology, 97. pp. 12-19. ISSN 0030-3992

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Official URL: https://doi.org/10.1016/j.optlastec.2017.06.004

Abstract

The generation and switching of dual-wavelength laser based on compact coupled microfiber Mach-Zehnder interferometer (CM-MZI) is reported. The CM-MZI is constructed by overlapping two portions of a single tapered optical fiber which has a diameter of 9 μm as to create multi-mode interference and also to produce spatial mode beating as to suppress mode competition in the homogeneous gain medium. The system is able to generate a dual-wavelength laser output that can be switched with the aid of the polarization rotation technique. Four dual-wavelength oscillation pairs are obtained from the interference fringe peaks of the CM-MZI comb filter with a switched channel spacing of 1.5 nm, 3.0 nm, and 6.0 nm. The wavelength spacing is stable at different pump powers. The lasing wavelength has a 3-dB linewidth of about 30 pm and peak-to-floor ration of about 55 dB at a pump power of 38 mW.

Item Type: Article
Uncontrolled Keywords: Tapered fiber; Mach-Zehnder interferometer; Dual-wavelength fiber laser; Switching
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Faculty of Science
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 20 Jul 2017 02:17
Last Modified: 11 Oct 2018 03:26
URI: http://eprints.um.edu.my/id/eprint/17533

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