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

Volume

16

Issue

3

fYear

1998

fDate

3/1/1998 12:00:00 AM

Firstpage

428

Lastpage

432

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;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.661371

Filename

661371