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Proceedings Paper

Ge-codoped laser fibers for mitigating stimulated Brillouin scattering in high power fiber amplifiers
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Paper Abstract

Rare-earth doped fibers for high power fiber amplifiers normally have a small refractive index difference between the core and inner cladding, but have a larger core diameter than conventional telecom fibers. We take advantage of this feature as well as the difference between the optical and acoustic waveguides and proposed several fiber designs to mitigate Stimulated Brillouin Scattering (SBS) to produce higher output powers. The numerical modeling showed that an increase in SBS threshold by 3-5 dB can be achieved using Ge-codopant while maintaining diffraction limited beam quality. The study also highlights the need to take into account the effects of minor refractive index profile variation in evaluating SBS performance.

Paper Details

Date Published: 19 January 2011
PDF: 6 pages
Proc. SPIE 7986, Passive Components and Fiber-Based Devices VII, 79860B (19 January 2011); doi: 10.1117/12.888050
Show Author Affiliations
Xin Chen, Corning Inc. (United States)
Ming-Jun Li, Corning Inc. (United States)
Anping Liu, Corning Inc. (United States)

Published in SPIE Proceedings Vol. 7986:
Passive Components and Fiber-Based Devices VII
Perry P. Shum, Editor(s)

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