, Volume 48, Issue 4, pp 491-497

A Setup for Investigating Induced Refractive Index Change in Optical Fibers at High Temperatures

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Abstract

An automated experimental setup for investigating the mechanisms of refractive index change in optical fibers at high temperatures is described. A resistive furnace that allows a section of an optical fiber to be heated from room temperature to 1200°C at a given rate was developed. The results from experiments on annealing gratings formed in a germanosilicate fiber with 14 mol % GeO2 in the fiber core are presented. The temperature stability of photoinduced fiber refractive index gratings at different demarcation energies was calculated on the basis of the data obtained.

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Translated from Pribory i Tekhnika Eksperimenta, No. 4, 2005, pp. 76–83.
Original Russian Text Copyright © 2005 by Bozhkov, Vasil’ev, Medvedkov, Grekov, Korolev.