Title :
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
fDate :
9/14/2000 12:00:00 AM
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;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20001158
