Compact and wide-band bismuth-based erbium-doped fibre amplifier based on two-stage and double-pass approaches

Cheng, X.S. and Hamida, B.A. and Naji, A.W. and Arof, Hamzah and Ahmad, Harith and Harun, Sulaiman Wadi (2012) Compact and wide-band bismuth-based erbium-doped fibre amplifier based on two-stage and double-pass approaches. IET Optoelectronics, 6 (3). pp. 127-130. ISSN 1751-8768

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Abstract

In this study, a wide-band erbium-doped fibre amplifier (EDFA) operating in both C- and L-band wavelength regions is demonstrated based on two-stage and double-pass approaches. The amplifier employs two pieces of 21 and 46 cm long bismuthbased EDFs (Bi-EDFs) optimised for C- and L-band operations, respectively, which are pumped by 1480 nm laser diode and its performances are investigated in both parallel and linear configurations. Wide-band operation is achieved in both configurations that covers from 1525 to 1620 nm. Compared with the linear Bi-EDFA, the parallel Bi-EDFA provides a higher attainable gain especially for small input signal. At input signal power of 230 dBm, the average gains of the parallel Bi-EDFA are obtained at approximately 20 dB with gain variation of +2.5 dB within the wavelength region from 1530 to 1605 nm. At the input signal power of 0 dBm, the average gains of approximately 10 dB with a gain variation of +2 dB within 1540 to 1620 nm region are obtained by both parallel and linear Bi-EDFAs. The noise figures for both configurations are maintained below 10 dB in the wavelength region from 1535 to 1620 nm. The noise figures are mainly because of spurious reflection in the cavity and high reflection of amplified spontaneous emission (ASE) from the end face.

Item Type: Article
Additional Information: Department of Electrical Engineering, Faculty of Engineering, University of Malaya
Uncontrolled Keywords: Bismuth; erbium; laser noise; optical communication equipment; optical fibre amplifiers; optical pumping; superradiance
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Ms. Jamilah Salleh
Date Deposited: 04 Nov 2014 06:28
Last Modified: 02 Jan 2019 02:58
URI: http://eprints.um.edu.my/id/eprint/10386

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