Erbium-Doped Fiber Laser With a Microfiber Coupled to Silica Microsphere

Sulaiman, Azlan and Harun, Sulaiman Wadi and Ahmad, Harith (2012) Erbium-Doped Fiber Laser With a Microfiber Coupled to Silica Microsphere. IEEE Photonics Journal, 4 (4). pp. 1065-1070. ISSN 1943-0655, DOI

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A compact erbium-doped fiber laser (EDFL) is demonstrated using a piece of 1.5-m-long erbium-doped fiber (EDF) with a microfiber coupled to a silica microsphere at the output end. A stable laser output is achieved due to the recirculation of amplified spontaneous emission (ASE) light inside the linear cavity and the incorporation of microsphere which serves as both a laser filtering element and a mirror. The laser operates at 1533.5 nm with a peak power of 7.7 dBm and an optical signal-to-noise ratio (OSNR) of around 24.4 dB with 980 nm pumping of 100 mW and a sphere diameter of 137 μm. The operating wavelength can be tuned down from 1533.4 to 1531.24 nm by changing the sphere diameter from 108.3 to 190.0 μm. The highest Q-factor of 12760 is obtained at the smallest sphere diameter of 108.3 μm.

Item Type: Article
Funders: University of Malaya: HIR-MOHE under Grant D000009-16001
Uncontrolled Keywords: Erbium-doped fiber laser (EDFL); Microsphere; Tapered fiber
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Faculty of Science > Department of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 07 Jan 2019 06:48
Last Modified: 07 Jan 2019 06:48

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