Open AccessCO_2 laser writing of long-period fiber grating in photonic crystal fiber under tension
Author(s) -
H. W. Lee,
Kin Seng Chiang
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.004533
Subject(s) - photonic crystal fiber , materials science , optics , fiber bragg grating , fiber laser , long period fiber grating , phosfos , core (optical fiber) , plastic optical fiber , laser , polarization maintaining optical fiber , fiber , graded index fiber , optical fiber , optoelectronics , all silica fiber , fiber optic sensor , composite material , wavelength , physics
We demonstrate that the efficiency of CO(2) laser writing of long-period fiber gratings in a solid-core photonic crystal fiber (PCF) can be enhanced greatly by applying tension to the fiber during the writing process through the mechanism of frozen-in viscoelasticity. Using this mechanism, we are able to write strong gratings in PCFs with a dosage of CO(2) laser radiation low enough not to cause any significant fiber structure deformation.