Effects of an auxiliary pump on the performance of TDFA

Abdul Rashid, Hairul Azhar and Abd Rahman, F. and Ahmad, H. (2008) Effects of an auxiliary pump on the performance of TDFA. Laser Physics, 18 (8). 977-982 . ISSN 1054-660X

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Official URL: http://link.springer.com/article/10.1134%2FS105466...

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
Subjects: T Technology > T Technology (General)
Q Science > QA Mathematics > QA75.5-76.95 Electronic computers. Computer science
Divisions: Faculty of Engineering (FOE)
Depositing User: Ms Suzilawati Abu Samah
Date Deposited: 09 Sep 2011 03:30
Last Modified: 21 Apr 2015 03:43
URI: http://shdl.mmu.edu.my/id/eprint/2286

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