DocumentCode :
783705
Title :
Study of ray propagation mechanisms in MultiStep index optical fibers with use in computational methods
Author :
Aldabaldetreku, Gotzon ; Durana, Gaizka ; Zubia, Joseba ; Arrue, Jon
Author_Institution :
Dept. of Electron. & Telecommun., Univ. of the Basque Country, Bilbao
Volume :
24
Issue :
10
fYear :
2006
Firstpage :
3770
Lastpage :
3778
Abstract :
A comprehensive analysis of the various ray propagation mechanisms that take place between the different layers of highly multimode multistep index (MSI) fibers is presented. A suitable analytical expression that allows the evaluation of the power fraction transferred from a certain layer to another one from rays undergoing either refraction or frustrated total internal reflection is provided. This expression is valid for any MSI fiber of any number of layers with a radially decreasing refractive index profile. Frustrated total internal reflection is originated as a consequence of the discontinuous refractive index profile inherent in this type of fibers, and unlike in step-index and graded-index fibers, it can also affect bound rays. Such an expression will allow determination of the remaining ray power along the fiber in each possible propagation state created as a consequence of this phenomenon. The approximations made will be of great benefit for computational purposes since they will lead to a considerable simplification in the numerical prediction of ray propagation in these fibers
Keywords :
light reflection; optical fibre theory; ray tracing; refractive index; frustrated total internal reflection; multistep index optical fibers; power fraction; ray propagation; refraction; refractive index; Equations; Geometrical optics; Optical computing; Optical fiber communication; Optical fibers; Optical propagation; Optical reflection; Optical refraction; Optical sensors; Refractive index; Frustrated total internal reflection; geometric optics; multistep index (MSI) optical fibers; ray tracing;
fLanguage :
English
Journal_Title :
Lightwave Technology, Journal of
Publisher :
ieee
ISSN :
0733-8724
Type :
jour
DOI :
10.1109/JLT.2006.881838
Filename :
1707842
Link To Document :
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