Wideband and flat-gain amplifier based on high concentration erbium-doped fibres in parallel double-pass configuration

Hamida, Belal Ahmed and Cheng, Xiau San and Harun, Sulaiman Wadi and Naji, Ahmed Wathik and Arof, Hamzah and Al-Khateeb, Wajdi Fawzi Mohammed and Khan, Sheroz and Ahmad, Harith (2012) Wideband and flat-gain amplifier based on high concentration erbium-doped fibres in parallel double-pass configuration. Quantum Electronics, 42 (3). pp. 241-243. ISSN 1063-7818, DOI https://doi.org/10.1070/QE2012v042n03ABEH014696.

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Abstract

A wideband and flat gain erbium-doped fibre amplifier (EDFA) is demonstrated using a hybrid gain medium of a zirconiabased erbium-doped fibre (Zr-EDF) and a high concentration erbium-doped fibre (EDF). The amplifier has two stages comprising a 2-m-long ZEDF and 9-m-long EDF optimised for C- and L-band operations, respectively, in a double-pass parallel configuration. A chirp fibre Bragg grating (CFBG) is used in both stages to ensure double propagation of the signal and thus to increase the attainable gain in both C- and L-band regions. At an input signal power of 0 dBm, a flat gain of 15 dB is achieved with a gain variation of less than 0.5 dB within a wide wavelength range from 1530 to 1605 nm. The corresponding noise figure varies from 6.2 to 10.8 dB within this wavelength region.

Item Type:	Article
Funders:	UNSPECIFIED
Additional Information:	Department of Electrical Engineering, Faculty of Engineering, University of Malaya
Uncontrolled Keywords:	double-pass amplifier; wideband amplifier; zirconia-based erbium-doped fibre
Subjects:	Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:	Faculty of Engineering
Depositing User:	Ms. Jamilah Salleh
Date Deposited:	31 Oct 2014 02:57
Last Modified:	02 Dec 2019 06:19
URI:	http://eprints.um.edu.my/id/eprint/10381

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