Optimization of Apodized Fiber Bragg Grating for Sensing Applications
Sunita P Ugale and V Mishra. Article: Optimization of Apodized Fiber Bragg Grating for Sensing Applications. IJCA Special Issue on Electronics, Information and Communication Engineering ICEICE(3):8-11, December 2011. Full text available. BibTeX
@article{key:article,
author = {Sunita P. Ugale and V. Mishra},
title = {Article: Optimization of Apodized Fiber Bragg Grating for Sensing Applications},
journal = {IJCA Special Issue on Electronics, Information and Communication Engineering},
year = {2011},
volume = {ICEICE},
number = {3},
pages = {8-11},
month = {December},
note = {Full text available}
}
Abstract
This paper presents the modeling and characterization of an Apodized optical fiber Bragg grating for maximum reflectivity and minimum side lobe power wastage and narrow spectral response. The modeling is based upon coupled mode theory together with transfer matrix method. This matrix approach is effective at treating a single grating as a series of separate gratings each having reduced overall length and different pitch lengths, and describing each with its own T-matrix.
FBG sensors are based on the fact that Bragg wavelength changes with change in pitch of the grating and the change in refractive index. Thus, any physical parameter which cause change in above mentioned parameters can be sensed using FBG. In optical sensing, the broad spectral response can result in poor sensitivity. In order to improve and to some extent to tailor the spectral response of FBG length, refractive index change, apodization and FWHM is optimized based upon maximum reflectivity criteria.
Reference
- R.Buczynski“Photonic Crystal Fibers”, Acta Physica Polonica, Vol. 106, PP 141-167, 2004.
- Jingyuan Wang, Chun Jiang, Weisheng Hu, MingyiGao, “ Modified design of photonic crystal fibers with flattened dispersion” Optics & Laser Technology, Vol. 38,PP 169–172,2006.
- M. Pourmahyabadi and Sh. Mohammad Nejad, “Numerical Analysis of Index-Guiding Photonic Crystal Fibers with Low Confinement Loss and Ultra-Flattened Dispersion by FDFD Method” Iranian Journal of Electrical & Electronic E 170 ngineering, Vol. 5,PP170-179,2009.
- Pierre Viale, SebastienFevrier, Frederic Gerome, HerveVilard, “Confinement Loss Computations in Photonic Crystal Fibres using a Novel Perfectly Matched Layer Design”Excerpt from the Proceedings of the COMSOL Multiphysics User's Conference 2005 Paris.
- P. AndrCs, A. Ferrando, E. Silvestre, J.J. Miret, and M.V. AndrCs “Dispersion and Polarization Propertiesin Photonic Crystal Fibers” ICTON, PP 98-103, 2002.
- Nihal AREED, “Ultra-Flattened Dispersion Honeycomb Lattice Photonic Crystal Fiber” Sciences of Electronic,Technologies of Information and Telecommunications,2009.