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Optical Engineering

Dual-stage superfluorescent fiber source with 1.16-W output power centered at 1561 nm
Author(s): Sheng-Ping Chen; Yi-Gang Li; Jian-Ping ZHU; Hua Wang; KeCheng Lu
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Paper Abstract

A 1.16-W superfluorescent fiber source (SFS) centered at 1561 nm with a 3-dB bandwidth of 8 nm has been achieved, under the pumping of a 3.56-W 976-nm laser diode array. The optical conversion efficiency reaches 32%. The source is constructed in a dual-stage configuration. The first stage is an ASE seed source with output power about 30 mW in the C band. The second stage is a backward-pumped high-power erbium-ytterbium-codoped double-clad fiber amplifier. An interesting phenomenon has been observed: low-power ASE seed source causes laser oscillation in the SFS, yet a relatively high-power ASE seed source prevents the SFS from lasing. The Rayleigh backscattering and the saturation effect of the amplifier are considered to explain the phenomenon.

Paper Details

Date Published: 1 May 2006
PDF: 4 pages
Opt. Eng. 45(5) 055003 doi: 10.1117/1.2202643
Published in: Optical Engineering Volume 45, Issue 5
Show Author Affiliations
Sheng-Ping Chen, Nankai Univ. (China)
Yi-Gang Li, Nankai Univ. (China)
Jian-Ping ZHU, Nankai Univ. (China)
Hua Wang, Nankai Univ. (China)
KeCheng Lu, Nankai Univ. (China)

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