Title :
Birefringence effect of optical fiber laser with intracore fiber Bragg grating
Author :
Douay, M. ; Feng, T. ; Bernage, P. ; Niay, P. ; Delevaque, E. ; Georges, T.
Author_Institution :
Lab. de Dynamique Moleculaire et Photonique, Univ. des Sci. et Technol. de Lille, Villeneuve d´´Ascq, France
Abstract :
The spectra of Nd/sup 3+/- and Pr/sup 3+/-doped fibre lasers utilizing an intracore Bragg grating reflector written at 1.08- mu m Bragg wavelength and a dichroic mirror for cavity feedback have been investigated under 0.6-GHz resolution. Two oscillating frequencies corresponding to two orthogonal linear polarization states of laser emission were observed. The frequencies and orientations of the two linearly polarized emissions could be changed by varying the fiber birefringence with an inline polarization controller. A phenomenological model is proposed to explain the experimental results.<>
Keywords :
birefringence; dichroism; diffraction gratings; feedback; fibre lasers; laser accessories; laser cavity resonators; mirrors; neodymium; praseodymium; 1.08 micron; Bragg grating reflector; Bragg wavelength; IR; Nd/sup 3+/-doped fibre lasers; Pr/sup 3+/-doped fibre lasers; cavity feedback; dichroic mirror; fiber birefringence; fibre laser spectra; inline polarization controller; intracore fiber Bragg grating; laser emission; linearly polarized emissions; optical fiber laser; orthogonal linear polarization states; oscillating frequencies; resolution; Birefringence; Bragg gratings; Fiber gratings; Fiber lasers; Frequency; Laser feedback; Mirrors; Neodymium; Optical fiber polarization; Optical fibers;
Journal_Title :
Photonics Technology Letters, IEEE
