Open AccessDemonstration of a 3 mW threshold Er-doped random fiber laser based on a unique fiber Bragg grating
Author(s) -
Mathieu Gagné,
Raman Kashyap
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.17.019067
Subject(s) - fiber bragg grating , materials science , optics , fiber laser , laser linewidth , long period fiber grating , phosfos , grating , polarization maintaining optical fiber , laser , distributed feedback laser , blazed grating , dispersion shifted fiber , optoelectronics , photonic crystal fiber , plastic optical fiber , optical fiber , wavelength , fiber optic sensor , diffraction grating , physics
We demonstrate a novel random laser based on a single fiber Bragg grating. A long fiber Bragg grating fabrication technique allows the insertion of a large number of randomly distributed phase errors in the structure of the grating which induces light localization. By writing such a grating in a polarisation maintaining Er-doped fiber, a random laser is demonstrated by pumping the fiber with 976 and 1480 nm pump lasers. The number of emitted modes is observed to be a function of the length of the grating and of the pump power and single-mode operation is shown to be possible. The random fiber laser shows low-threshold (approximately 3 mW) and measured approximately 0.5 pm emission linewidth at a wavelength of around 1534 nm.