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https://gnanaganga.inflibnet.ac.in:8443/jspui/handle/123456789/6744
Title: | Simple Approach to Calculate the Refractive Index Profile of Ion-Exchanged Waveguides |
Authors: | S. Sebastianl S. Berneschi |
Issue Date: | 2005 |
Publisher: | Optical Engineering |
Abstract: | In graded-index glass waveguides a key factor for the design of components and devices is usually the accurate determination of the refractive index profile as a function of depth. The problem of reconstructing the index profile using the measured effective refractive indices has been faced by several authors.Here we suggest a new expression, linear combination of two analytical functions, which is able to provide a good approximation of the solution of the differential equation that rules the thermal diffusion process. The use of this equation, in connection with the general approach of inverting the Wentzel-Kramer-Bruilloin (WKB) eigenvalue equation, leads to a simple, fast, and accurate computation of the refractive index profile obtained by ion exchange. The application of the method to various Ag-exchanged waveguides in different glass matrices, with better accuracy than most of the usual procedures, has been demonstrated. |
URI: | http://gnanaganga.inflibnet.ac.in:8080/jspui/handle/123456789/6744 |
Appears in Collections: | Articles to be qced |
Files in This Item:
File | Size | Format | |
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Simple approach to calculate the refractive index.pdf Restricted Access | 2.69 MB | Adobe PDF | View/Open Request a copy |
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