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Experimental investigation of noise in double-pass erbium-doped fiber amplifiers

✍ Scribed by A. W. Naji; M. S. Z. Abidin; M. H. Al-Mansoori; A. R. Faidz; M. A. Mahdi

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
87 KB
Volume
4
Category
Article
ISSN
1612-2011

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✦ Synopsis

In this paper, noise figure characteristics of doublepass amplifiers are investigated. Experimental analysis between single-pass and double-pass amplifications is discussed with 1480 nm pumping scheme. The noise figure penalty of the double-pass amplifier compared to single-pass amplifier is contributed by the generation of amplified spontaneous emission in backward direction with respect to the initial signal direction. Thus, the optical signal-to-noise ratio of the signal is degraded with the same amount of the noise figure penalty.

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