Absorption efficiency of graded-index double-clad fiber

Sheng Xu; Zi Hua Wang

doi:10.1117/1.2147129

1 December 2005 Absorption efficiency of graded-index double-clad fiber

Sheng Xu, Zi Hua Wang

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Optical Engineering, Vol. 44, Issue 12, 125002 (December 2005). https://doi.org/10.1117/1.2147129

Abstract

The absorption efficiency of graded-index double-clad fiber lasers and amplifiers is investigated. As ray optics are no longer valid in the case of a graded index, a mode analysis method is used. The calculated results show that, in symmetric cases, absorption efficiency is higher with graded index than that with step index. In the case of an offset core, graded index can achieve the same absorption efficiency with a much smaller offset distance. Absorption efficiency for different graded-index profiles of the inner cladding is also studied and compared.

©(2005) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Sheng Xu and Zi Hua Wang "Absorption efficiency of graded-index double-clad fiber," Optical Engineering 44(12), 125002 (1 December 2005). https://doi.org/10.1117/1.2147129

Published: 1 December 2005

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KEYWORDS

Absorption

Cladding

Refractive index

Geometrical optics

Fiber amplifiers

Wave propagation

Optical engineering

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