1 May 2006 Dual-stage superfluorescent fiber source with 1.16-W output power centered at 1561 nm
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Optical Engineering, 45(5), 055003 (2006). doi:10.1117/1.2202643
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.
Sheng-Ping Chen, Yi-Gang Li, Jian-Ping ZHU, Hua Wang, KeCheng Lu, "Dual-stage superfluorescent fiber source with 1.16-W output power centered at 1561 nm," Optical Engineering 45(5), 055003 (1 May 2006). http://dx.doi.org/10.1117/1.2202643
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KEYWORDS
Backscatter

Fiber lasers

Optical amplifiers

Cladding

Semiconductor lasers

Wavelength division multiplexing

High power fiber amplifiers

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