Closely spaced dual-wavelength fiber laser using an ultranarrow bandwidth optical filter for low radio frequency generation

Ahmad, Harith and Razak, N.F. and Zulkifli, M.Z. and Muhammad, F.D. and Munajat, Y. and Harun, Sulaiman Wadi (2014) Closely spaced dual-wavelength fiber laser using an ultranarrow bandwidth optical filter for low radio frequency generation. Applied Optics, 53 (19). pp. 4123-4127. ISSN 0003-6935

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Abstract

A dual-wavelength (DW) fiber laser with a closely spaced single longitudinal mode (SLM) output is proposed and demonstrated. The proposed fiber laser utilizes a conventional fiber Bragg grating with a center wavelength of about 1546.8 nm in conjunction with an ultranarrow bandwidth tunable optical filter to generate the desired DW SLM output. Observations with a very high resolution optical spectrum analyzer, which was capable of achieving resolutions up to 0.16 pm, revealed detailed spectral characteristics not characteristically seen before. A channel spacing of up to 58 nm was realized, and spacing as small as 2 pm was achieved. The minimum channel spacing and its resulting beat frequency are the narrowest observed yet to the best of our knowledge for a DW fiber laser at room temperature.

Item Type: Article
Uncontrolled Keywords: Closely spaced dual-wavelength fiber laser; Ultranarrow bandwidth optical filter; Low radio frequency generation
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Dept of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 26 Oct 2015 05:18
Last Modified: 09 Oct 2018 05:18
URI: http://eprints.um.edu.my/id/eprint/14333

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