PDL and DGD Reduction in Bragg Gratings Using Twisted Fibers for the Inscription

Author

Bette, Sébastien ; Caucheteur, Christophe ; Garcia-Munoz, Victor ; Garcia-Olcina, Raimundo ; Wuilpart, Marc ; Sales, Salvador ; Capmany, Jose ; Mégret, Patrice

Author_Institution

Fac. Polytech. de Mons, Univ. of Mons, Mons, Belgium

Volume

21

Issue

22

fYear

2009

Firstpage

1689

Lastpage

1691

Abstract

We report the possibility to reduce the polarization-dependent loss (PDL) and the differential group delay (DGD) in fiber Bragg gratings (FBGs) by inducing polarization-mode coupling (PMC). To induce the PMC, the fiber is twisted before the inscription and then relaxed once the FBG is written. The theoretical concept as well as the simulation method used to study FBGs exhibiting PMC is detailed. The obtained results point out a significant decrease of the gratings´ PDL and DGD values. In addition, experimental results, in good agreement with the theory, demonstrate the possibility to implement this method in practice.

Keywords

Bragg gratings; optical fibre fabrication; optical fibre losses; optical fibre polarisation; differential group delay reduction; fiber Bragg gratings; polarization dependent loss reduction; polarization mode coupling; twisted fiber; Birefringence; Bragg gratings; manufacturing process; optical fibers; polarization;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2009.2031817

Filename

5268209