Asymptotic analysis of Bragg fibers and dielectric coaxial fibers

Yong Xu; Amnon Yariv

doi:10.1117/12.436012

30 July 2001 Asymptotic analysis of Bragg fibers and dielectric coaxial fibers

Yong Xu, Amnon Yariv

Proceedings Volume 4532, Active and Passive Optical Components for WDM Communication; (2001) https://doi.org/10.1117/12.436012
Event: ITCom 2001: International Symposium on the Convergence of IT and Communications, 2001, Denver, CO, United States

Abstract

Using an asymptotic matrix formalism, we analyze the guided modes of Bragg fibers and the dielectric coaxial fibers. In the asymptotic limit, the Bloch theorem can be applied to describe the optical field within the cladding layers, while the core region field is described by the exact solutions of Maxwell equations. From the asymptotic analysis, we derive an approximate expression for the radiation loss of Bragg fibers and dielectric coaxial fibers and give the number of Bragg pairs required to achieve 0.2dB/km radiation loss. The dispersions of the guided modes of Bragg fibers and dielectric coaxial fibers are calculated using both the asymptotic approach and the finite difference time domain method. The results obtained from these two approaches are shown to have excellent agreement. We use asymptotic analysis to calculate the dispersion parameter D of the guided dielectric coaxial fiber modes, which is found to be much larger than that of the conventional telecom fibers.

Citation Download Citation

Yong Xu and Amnon Yariv "Asymptotic analysis of Bragg fibers and dielectric coaxial fibers", Proc. SPIE 4532, Active and Passive Optical Components for WDM Communication, (30 July 2001); https://doi.org/10.1117/12.436012

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