Numerical Approach to Modeling and Characterization of Refractive Index Changes for a Long-Period Fiber Grating Fabricated by Femtosecond Laser

Numerical Approach to Modeling and Characterization of Refractive Index Changes for a Long-Period Fiber Grating Fabricated by Femtosecond Laser

A 3D finite element model constructed to predict the intensity-dependent refractive index profile induced by femtosecond laser radiation is presented. A fiber core irradiated by a pulsed laser is modeled as a cylinder subject to predefined boundary conditions using COMSOL5.2 Multiphysics commercial...

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Bibliographic Details
Main Authors: Akram Saad, Yonghyun Cho, Farid Ahmed, Martin Byung-Guk Jun
Format: Article
Language:English
Published: MDPI AG 2016-11-01
Series:Materials
Subjects:
refractive index
Gaussian beam
femtosecond laser
LPFG model
beam envelop
grating period
grating length
index sensor
Online Access:http://www.mdpi.com/1996-1944/9/11/941

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http://www.mdpi.com/1996-1944/9/11/941

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