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  • Vol. 22, Iss. 23 — Dec. 1, 1997
  • pp: 1766–1768

Improvement of gain and noise figure by periodic bending of an erbium-doped fiber

A. H. Liang, H. Toda, and A. Hasegawa  »View Author Affiliations


Optics Letters, Vol. 22, Issue 23, pp. 1766-1768 (1997)
http://dx.doi.org/10.1364/OL.22.001766


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Abstract

The gain and noise figure can be improved by periodic bending of an erbium-doped fiber. Bending of 5.4 m at the beginning of an erbium-doped fiber results in a reduction of noise figure, a gain increment, and a reduction of forward amplified spontaneous emission of 5.1, 3.6, and 1.5 dB for a 1533-nm small signal; 4.0, 1.9, and 2.1 dB for a 1550-nm small signal; and 2.7, 0.9, and 1.8 dB for a 1560-nm small signal (-40 dBm), respectively. In addition, the periodic bending can operate an erbium-doped fiber amplifier at quantum-limited noise and enables its operation to be more stable.

© 1997 Optical Society of America

Citation
A. H. Liang, H. Toda, and A. Hasegawa, "Improvement of gain and noise figure by periodic bending of an erbium-doped fiber," Opt. Lett. 22, 1766-1768 (1997)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-22-23-1766


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