Investigations on birefringence effects in polymer optical fiber Bragg gratings

X. Hu; D. Sáez-Rodríguez; O. Bang; D. J. Webb; C. Caucheteur

doi:10.1117/12.2054025

2 May 2014 Investigations on birefringence effects in polymer optical fiber Bragg gratings

X. Hu, D. Sáez-Rodríguez, O. Bang, D. J. Webb, C. Caucheteur

Proceedings Volume 9128, Micro-structured and Specialty Optical Fibres III; 91280Q (2014) https://doi.org/10.1117/12.2054025
Event: SPIE Photonics Europe, 2014, Brussels, Belgium

Abstract

Step-index polymer optical fiber Bragg gratings (POFBGs) and microstructured polymer optical fiber Bragg gratings (mPOFBGs) present several attractive features, especially for sensing purposes. In comparison to FBGs written in silica fibers, they are more sensitive to temperature and pressure because of the larger thermo-optic coefficient and smaller Young’s modulus of polymer materials. (M)POFBGs are most often photowritten in poly(methylmethacrylate) (PMMA) materials using a continuous-wave 325 nm HeCd laser. For the first time to the best of our knowledge, we study photoinduced birefringence effects in (m)POFBGs. To achieve this, highly reflective gratings were inscribed with the phase mask technique. They were then monitored in transmission with polarized light. For this, (m)POF sections a few cm in length containing the gratings were glued to angled silica fibers. Polarization dependent loss (PDL) and differential group delay (DGD) were computed from the Jones matrix eigenanalysis using an optical vector analyser. Maximum values exceeding several dB and a few picoseconds were obtained for the PDL and DGD, respectively. The response to lateral force was finally investigated. As it induces birefringence in addition to the photo-induced one, an increase of the PDL and DGD values were noticed.

Citation Download Citation

X. Hu, D. Sáez-Rodríguez, O. Bang, D. J. Webb, and C. Caucheteur "Investigations on birefringence effects in polymer optical fiber Bragg gratings", Proc. SPIE 9128, Micro-structured and Specialty Optical Fibres III, 91280Q (2 May 2014); https://doi.org/10.1117/12.2054025

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available