Multiwavelength erbium-doped fibre laser based on a high-birefringence fibre loop mirror

Author

Dong, X.P. ; Li, Shenping ; Chiang, K.S. ; Ng, M.N. ; Chu, B.C.B.

Author_Institution

Dept. of Electron. Eng., Xiamen Univ., China

Volume

36

Issue

19

fYear

2000

fDate

9/14/2000 12:00:00 AM

Firstpage

1609

Lastpage

1610

Abstract

A novel multiwavelength fibre laser is proposed, which is based on a fibre loop mirror formed by a high-birefringence (HiBi) fibre, a polarisation controller, and a directional coupler. By setting the polarisation controller properly, the HiBi fibre loop mirror acts as a polarisation-independent wavelength filter. With this configuration, the wavelength spacing of the laser can be varied accurately by adjusting the length of the HiBi fibre. Experimentally, by cooling the erbium-doped fibre with liquid nitrogen to reduce its homogeneous linewidth, stable emission at 16 wavelengths with a spacing of 0.8 nm and an amplitude variation of <5 dB was achieved

Keywords

birefringence; erbium; fibre lasers; laser beams; laser cooling; laser mirrors; optical directional couplers; optical fibre couplers; optical fibre filters; optical fibre polarisation; Er-doped fibre; Er-doped fibre laser; N₂; amplitude variation; cooling; directional coupler; fibre loop mirror; high-birefringence fibre; high-birefringence fibre loop mirror; homogeneous linewidth; liquid N₂; multiwavelength fibre laser; polarisation controller; polarisation-independent wavelength filter; spacing; stable emission; wavelength spacing;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:20001158

Filename

871143