Development of nanoengineered thulium-doped fiber laser with low threshold pump power and tunable operating wavelength

Paul, M.C. and Dhar, A. and Das, S. and Latiff, A.A. and Ahmad, M.T. and Harun, Sulaiman Wadi (2015) Development of nanoengineered thulium-doped fiber laser with low threshold pump power and tunable operating wavelength. IEEE Photonics Journal, 7 (1). ISSN 1943-0655

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Abstract

A tunable and low-threshold thulium (Tm)-doped fiber (TDF) laser is demonstrated using a new silica-based nanoengineered TDF in a linear configuration, in conjunction with 1552-nm pumping. The TDF used in these experiments had a Tm-doped nanoengineering yttrium-alumina-silica glass core with a diameter of 13.43 mu m and 0. 21 NA, which is surrounded by a pure silica inner cladding with normal acrylate polymer resin coating. The nanoengineered TDF was fabricated using a modified chemical vapor deposition (MCVD) process, in conjunction with a solution-doping technique. The fabricated fiber shows an absorption loss of 165 dB/m at 793 nm. A maximum lasing slope efficiency of 26.2 was obtained at a 1910-nm wavelength using the fabricated fiber with an optimum length of 5 m. The maximum output power of 138 mW was achieved at the maximum pump power of 1100 mW. The lowest pump power threshold of 693 mW for a 1552-nm wavelength was obtained at a TDF length of 7 m. The operating wavelength of the laser could be continuously tuned from 1890 to 1910 nm with an optical signal-to-noise ratio better than 43 dB, whereas the slope efficiency of the laser varies from 16.4 to 19.7.

Item Type: Article
Additional Information: Cb5ou Times Cited:0 Cited References Count:10
Uncontrolled Keywords: Nano-engineered glass, thulium-doped fiber, tunable (tm)-doped fiber laser (tdfl), silica based tdfl,
Subjects: T Technology > T Technology (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 22 Jul 2015 01:21
Last Modified: 09 Oct 2018 04:30
URI: http://eprints.um.edu.my/id/eprint/13736

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