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Proceedings Paper

Amplified spontaneous emissions in the double-clad Er:Yt co-doped fiber
Author(s): Guijin Xia; Qiang Fang; Jumei Zhang; Meng Liang; Jihong Liu
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Paper Abstract

In order to achieve higher output powers, double-clad fibers (DCF's) are widely used by optical fiber lasers and amplifiers. In this paper, we present a comprehensive mathematical model for the novel multi-mode (MM) double-clad (DC) Er: Yb co-doped hexagonal fiber, Based on the rate and propagation equations, the pump light and forward and backward-amplified spontaneous emissions (ASE±) light transmission in the fiber are analyzed numerically and measured. The simulative and experimental results show that pump power was absorbed almost completely when the length of the fiber is about 3.5~4 m, the suitable length of the fiber in optical fiber lasers is 2~2.5 m. and the 2 m long fiber emits at 1535 and 1543 nm simultaneously, and the peak-value wavelength of ASE+ changes to the long wavelength with the increase of the pump power. The results investigated are useful for the design of optical fiber lasers.

Paper Details

Date Published: 5 December 2005
PDF: 7 pages
Proc. SPIE 6019, Passive Components and Fiber-based Devices II, 601945 (5 December 2005); doi: 10.1117/12.633456
Show Author Affiliations
Guijin Xia, Xi'an Institute of Optics and Precision Mechanics (China)
Qiang Fang, Xi'an Posts and Telecommunication Institute (China)
Jumei Zhang, Xi'an Communication Institute (China)
Meng Liang, Xi'an Posts and Telecommunication Institute (China)
Jihong Liu, Xi'an Posts and Telecommunication Institute (China)

Published in SPIE Proceedings Vol. 6019:
Passive Components and Fiber-based Devices II
Yan Sun; Jianping Chen; Sang Bae Lee; Ian H. White, Editor(s)

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