Open AccessFiber based polarization filter for radially and azimuthally polarized light
Author(s) -
Christoph Jocher,
César Jáuregui,
Christian Voigtländer,
Fabian Stutzki,
Stefan Nolte,
Jens Limpert,
Andreas Tünnermann
Publication year - 2011
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.19.019582
Subject(s) - optics , fiber bragg grating , polarization maintaining optical fiber , materials science , fiber laser , polarization (electrochemistry) , phosfos , photonic crystal fiber , optical fiber , numerical aperture , long period fiber grating , fiber optic sensor , physics , wavelength , chemistry
We demonstrate a new fiber based concept to filter azimuthally or radially polarized light. This concept is based on the lifting of the modal degeneracy that takes place in high numerical aperture fibers. In such fibers, the radially and azimuthally polarized modes can be spectrally separated using a fiber Bragg grating. As a proof of principle, we filter azimuthally polarized light in a commercially available fiber in which a fiber Bragg grating has been written by a femtosecond pulsed laser.