Effects of an auxiliary pump on the performance of TDFA

Emami, Siamak Dawazdah and Harun, Sulaiman Wadi and Rahman, Faidz Abd and Abdul-Rashid, Hairul Azhar and Ahmad, Harith (2008) Effects of an auxiliary pump on the performance of TDFA. Laser Physics, 18 (8). pp. 977-982. ISSN 1054-660X

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Official URL: https://doi.org/10.1134/S1054660X08080112

Abstract

An efficient fluoride-based thulium-doped fiber amplifier (TDFA) is theoretically demonstrated using a dual pumping scheme. Differential equations are solved directly in the theoretical analysis. An auxiliary pump at 1560 nm is used for ground-state absorption to enhance the excited-state absorption provided by the main pump of 1050 nm and, thus, to improve the gain and noise figure of the TDFA. A gain improvement of more than 10 dB is obtained at the 1470-nm region with the use of a 1560-nm pump at 20 mW. A small signal gain as high as 30 dB is obtained at this region with 100 mW of a 1050-nm pump and 20 mW of a 1560-nm pump using a 20-m of thulium-doped fiber. The corresponding noise figure is obtained at lower than 5 dB.

Item Type: Article
Uncontrolled Keywords: Absorption; Amplifiers (electronic); Difference equations; Differential equations; Differentiation (calculus); Electric network analysis; Fiber amplifiers; Fiber lasers; Fiber optics; Noise figure; Thulium
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Faculty of Science > Dept of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 28 Nov 2018 05:12
Last Modified: 08 Apr 2019 06:24
URI: http://eprints.um.edu.my/id/eprint/19743

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