OP2 - Determination of the Effective Refractive Index of Various Single Mode Fibres for Fibre Bragg Grating Sensor Applications

Event
SENSOR+TEST Conferences 2009
2009-05-26 - 2009-05-28
Congress Center Nürnberg
Band
Proceedings OPTO 2009 & IRS² 2009
Chapter
OPTO Poster Session
Author(s)
F. Juelich, J. Roths - Munich University of Applied Sciences, Munich, Germany
Pages
119 - 124
DOI
10.5162/opto09/op2
ISBN
978-3-9810993-6-2
Price
free

Abstract

A method for determining the effective refractive index (new) of optical fibres with high accuracy is presented. The measurement principle is based on the inscription process of fibre Bragg gratings (FBG) into the optical fibres. Results of refractive index measurements at ~1535nm wavelength on standard telecommunication and speciality, photosensitive optical fibres are presented. The measured values of neff correlate with GeO2 dopant concentration inside the cores of the fibres. This measurement technique can have applications in process control for optical fibre manufacturing and in FBG production technology.

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