Please use this identifier to cite or link to this item: http://ktisis.cut.ac.cy/handle/10488/7101
Title: Numerical modeling of complex femtosecond laser inscribed fiber gratings: comparison with experiment
Authors: Kalli, Kyriacos 
Webb, David J. 
Zhang, Lin 
Koutsides, Charalambos 
Keywords: Fiber optics
Finite element method
Issue Date: 2011
Publisher: Spie Digital Library
Source: 21st International Conference on Optical Fiber Sensors;ON;15 -19 May 2011,Ottawa
Abstract: We present experimental studies and numerical modeling based on a combination of the Bidirectional Beam Propagation Method and Finite Element Modeling that completely describes the wavelength spectra of point by point femtosecond laser inscribed fiber Bragg gratings, showing excellent agreement with experiment. We have investigated the dependence of different spectral parameters such as insertion loss, all dominant cladding and ghost modes and their shape relative to the position of the fiber Bragg grating in the core of the fiber. Our model is validated by comparing model predictions with experimental data and allows for predictive modeling of the gratings. We expand our analysis to more complicated structures, where we introduce symmetry breaking; this highlights the importance of centered gratings and how maintaining symmetry contributes to the overall spectral quality of the inscribed Bragg gratings. Finally, the numerical modeling is applied to superstructure gratings and a comparison with experimental results reveals a capability for dealing with complex grating structures that can be designed with particular wavelength characteristics.
URI: http://ktisis.cut.ac.cy/handle/10488/7101
DOI: 10.1117/12.885124
Rights: © 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).
Appears in Collections:Δημοσιεύσεις σε συνέδρια/Conference papers

Show full item record

Page view(s)

16
Last Week
0
Last month
3
checked on Aug 24, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.