Research Article | OPEN ACCESS
Effect of Er+3 Concentration on the Small Signal Gain Coefficient and the Gain in the Erbium Doped Fiber Amplifier
1O. Mahran, 1Mohammed S. Helmi, 1Gamal D. Roston, 2Naglaa El. Sayed and 2Engy M. Gerges
1Faculty of Science
2Faculty of Education, University of Alexandria, Egypt
Research Journal of Applied Sciences, Engineering and Technology 2014 15:3164-3170
Received: October 22, 2013 | Accepted: November 11, 2013 | Published: April 19, 2014
Abstract
The small signal gain coefficient and the gain of Erbium-Doped Fiber Amplifier (EDFA) in the wavelength range (1400-1700 nm) for different erbium concentrations and different amplifier lengths are calculated and studied. A core graded-index and erbium-doped concentration, are optimized for an EDFA in simplified two-level model. There is evidence to show that, the gain increases with the erbium concentration and the amplifier length. Where the relation between the gain and the amplifier length at different wavelengths is linear with the maximum gain at &lambda = 1530 nm. Also the temperature dependence of the small signal gain coefficient and the gain at the peak wavelength of EDFA was studied which shows, slightly increase in the values of both with temperature. The value of the signal wavelength was chosen in the gain window of EDFA at 1530 nm.
Keywords:
Core-index, EDFA, erbium concentration, gain, small signal gain coefficient,
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Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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