Designing graded-index plastic optical fibers from two-step-core fibers by thermal diffusion of dopants

Alexandar Djordjevich; Svetislav Savovic

doi:10.1117/1.2048742

1 September 2005 Designing graded-index plastic optical fibers from two-step-core fibers by thermal diffusion of dopants

Alexandar Djordjevich, Svetislav Savovic

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Optical Engineering, Vol. 44, Issue 9, 095003 (September 2005). https://doi.org/10.1117/1.2048742

Abstract

We investigate the process of generating graded-index plastic optical fibers by thermal diffusion of dopants in multistep-core fibers formed by layered extrusion. The layer thicknesses and their dopant concentrations are varied for two-step-core fibers to determine the values that, after the completion of the diffusion process, result in a desired dopant distribution optimized for maximum bandwidth of graded-index fibers. Our solution of the relevant diffusion equation by the explicit finite-difference method is verified against an analytical solution from the literature and two cases of fibers with diffused profiles, one with a two-step and the other with six-step core. The conclusions reached provide a guideline for the design of graded-index plastic fibers and enable prediction of the fiber bandwidth.

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

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Alexandar Djordjevich and Svetislav Savovic "Designing graded-index plastic optical fibers from two-step-core fibers by thermal diffusion of dopants," Optical Engineering 44(9), 095003 (1 September 2005). https://doi.org/10.1117/1.2048742

Published: 1 September 2005

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