Gain Improvement in Two-stage L-Band EDFA with Incorporation of Fiber Bragg Grating

Harun, Sulaiman Wadi and Ahmad, Harith (2005) Gain Improvement in Two-stage L-Band EDFA with Incorporation of Fiber Bragg Grating. Journal of Optical Communications, 26 (5). pp. 198-200. ISSN 0173-4911

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Official URL: http://dx.doi.org/10.1515/JOC.2005.26.5.198

Abstract

The gain improvement in two-stage long wavelength band erbium doped fiber amplifier (L-band EDFA) is demonstrated by incorporation of broadband C-band fiber Bragg grating (FBG). The FBG is used to reflect the unwanted backward C-band ASE from second stage back into the system. The proposed technique has improved the small signal gain from 19.6 dB to 23.5 dB compared to those of an amplifier without the FBG. Besides gain improvement, this technique also reduces noise figure and the maximum noise figure improvement of 1.8 dB was obtained at input signal power of 0 dBm. At wavelength range from 1570 to 1600 nm, the gain of the proposed amplifier varies from 20.0 to 28.5 dB. The flat-gain is expected to be obtained by optimization of EDF length and pump powers. The corresponding noise figures are varied from 4.8 to 5.2 dB.

Item Type: Article
Uncontrolled Keywords: Doping (additives); Erbium; Light amplifiers; Optimization; Signal processing; Spurious signal noise
Subjects: Q Science > Q Science (General)
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: 11 Oct 2018 09:06
Last Modified: 11 Oct 2018 09:06
URI: http://eprints.um.edu.my/id/eprint/19659

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