Pal, Mrinmay and Paul, Mukul Chandra and Dhar, A and Pal, A and Sen, Ranjan and Dasgupta, Kamal and Bhadra, Shyamal Kumar (2007) Investigation of the optical gain and noise figure for multi-channel amplification in EDFA under optimized pump condition. Optics Communication, 273 (2). pp. 407-412. ISSN 0030-4018

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Abstract

We present the results of an investigation of optical gain and noise figure for simultaneous multi-channel amplification of an erbium doped fibre amplifier (EDFA) under optimized pump condition. Different pump configurations with varying input signal levels show interesting features on gain flatness. In the experiment, population inversion along the fibre length which determines the gain-spectra and noise characteristics of the amplifier is adjusted through optimized fibre length and injected pump power in order to minimize the gain-tilt at C-band. It is observed that bi-directional pumping manifests the best combination of low noise and high gain of EDFA which are useful as in-line repeaters in WDM network. We obtain 30 +/- 1.5 dB intrinsically flat small signal gain from 1538 nm to 1558 nm band of wavelength with noise figure < 4 dB for 16-channel simultaneous amplification in a single stage EDFA without gain flattening filter

Item Type:	Article
Subjects:	Processing Science
Divisions:	Fiber Optics and Photonics
Depositing User:	Namita Dutta
Date Deposited:	30 Jan 2012 10:18
Last Modified:	29 Feb 2012 12:48
URI:	http://cgcri.csircentral.net/id/eprint/527

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