Analysis of Induced-Birefringence Effects on Fiber Bragg Gratings

✍ Scribed by Rachid Gafsi; Mahmoud A. El-Sherif

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 241 KB
• Volume: 6
• Category: Article
• ISSN: 1068-5200
• DOI: 10.1006/ofte.2000.0333

✦ Synopsis

This paper reports the birefringence effects on fiber Bragg grating FBG in sensors, optical communications systems, and devices. We have studied and analyzed the optical and mechanical property changes of FBG when the grating zone is subjected to a static transverse load in the case of plane strain and stress. The results presented for plane strain confirm the calculations established in previous research work. We extended these calculations for plane stress and used coupled-mode theory to deduce the reflection spectra of the disturbed FBG. Results were in good agreement with previous published results for plane strain. The simulated results show that the Bragg reflection wavelength changes for the x-polarization and the y-polarization are much more significant for plane stress than for plane strain. Moreover, the Bragg reflection wavelength variation is much more important for x-polarization than for y-polarization for both plane strain and plane stress. This research holds implications for the improved integration of these devices into smart structures and materials as well as optical communications systems and devices.