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Low noise double pass L-band erbium-doped fiber amplifier
Authors:S. W. Harun   H. Ahmad
Affiliation:Photonics Laboratory, Department of Physics, University of Malaysia, Kuala Lumpur 50603, Malaysia
Abstract:A new double pass long wavelength band erbium-doped fiber amplifier with enhanced noise figure characteristics is demonstrated. The noise figure is improved by about 2.6 dB with the incorporation of broadband conventional-band fiber Bragg grating (FBG) in between the two segments of erbium-doped fiber. By incorporating both the pre-amplifier and the FBG, the noise figure is further improved, which varies from 4.0 to 5.0 dB in the flat gain region from 1570 to 1600 nm. The gain varies from 32.0 to 33.4 dB within this region. The new amplifier with high gain and low noise figure can be useful as an inline amplifier in a wavelength division multiplexing transmission system.
Keywords:Author Keywords: Erbium-doped fibre amplifier   L-band   Double pass EDFA   Optical communication   Noise figure improvement
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