Absorption efficiency of spiral shape double-clad fiber

Zi Hua Wang; Zhong Yin Xiao; Sheng Xu

doi:10.1117/12.635555

3 December 2005 Absorption efficiency of spiral shape double-clad fibers

Zi Hua Wang, Zhong Yin Xiao, Sheng Xu

Proceedings Volume 6019, Passive Components and Fiber-based Devices II; 601939 (2005) https://doi.org/10.1117/12.635555
Event: Asia-Pacific Optical Communications, 2005, Shanghai, China

Abstract

In this paper, we present a novel cross section shape DCF. Truncated from a circular DCF, the inner cladding of this DCF is bounded by two equal angular spiral curves. By using the concept of mean transverse path between successive encounters of the core, we developed a new method to calculate the absorption efficiency per unit fiber length. For a spiral shape DCF with the largest radius R=100μm , radius of doped core r₀=4μm , and the angle parameter of spiral curve θ=0.04 , we calculated the mean transverse path between successive encounters of the core l_r=2903μm . The corresponding l_c with other truncated shape cross section having the same cross sectional area is l_c=3454μm . Final results show that the absorption efficiency η increases 16% for our spiral shape DCF.

Citation Download Citation

Zi Hua Wang, Zhong Yin Xiao, and Sheng Xu "Absorption efficiency of spiral shape double-clad fibers", Proc. SPIE 6019, Passive Components and Fiber-based Devices II, 601939 (3 December 2005); https://doi.org/10.1117/12.635555

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