Title :
Bend loss in neodymium-doped fiber lasers
Author :
Swift, Colin I. ; Harris, Alun J.
Author_Institution :
Dept. of Electr. & Electron. Eng., Newcastle upon Tyne Univ., UK
fDate :
3/1/1998 12:00:00 AM
Abstract :
This paper is concerned with the effect of a fixed radius bend upon the operation of a neodymium-doped fiber laser at a wavelength of 1064 nm. In particular, the threshold power, slope efficiency, and cavity lifetime were measured over a range of bend radii and lengths. Oscillations were observed in the variation of the experimentally measured laser parameters with bend length over a range of bend radii which was explained by the finite thickness of the cladding. The results are explained theoretically with the aid of a model in which the pure bend loss coefficient is a parameter in the relevant laser equations and the finite thickness of the cladding is taken into account
Keywords :
bending; fibre lasers; laser cavity resonators; neodymium; optical fibre cladding; optical fibre theory; optical losses; 1064 nm; bend radii; cavity lifetime; cladding; finite thickness; fixed radius bend; laser parameters; neodymium-doped fiber laser; neodymium-doped fiber laser bend loss; oscillations; pure bend loss coefficient; relevant laser equations; slope efficiency; threshold power; Fiber lasers; Laser excitation; Laser modes; Laser theory; Length measurement; Loss measurement; Optical fiber communication; Optical fiber losses; Optical fibers; Pump lasers;
Journal_Title :
Lightwave Technology, Journal of
