Title :
Numerical analysis of multifrequency erbium-doped fibre ring laser employing periodic filter and frequency shifter
Author :
Karasek, M. ; Bellemare, A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Laval Univ., Que., Canada
fDate :
4/1/2000 12:00:00 AM
Abstract :
Numerical analysis of a recently proposed multifrequency erbium-doped ring laser employing a frequency periodic filter and frequency shifter is presented. The model is based on a homogeneously broadened three-level approximation of an erbium ion. The multifrequency operation is achieved by shifting the frequency of the amplified spontaneous emission (ASE) power circulating in the ring cavity by one wavelength slot each circulation period to prevent steady-state single-frequency laser operation. The effect of cavity loss, erbium-doped fibre (EDF) gain, direction of ASE circulation on lasing spectrum uniformity and output power is investigated
Keywords :
erbium; fibre lasers; laser cavity resonators; laser theory; optical fibre losses; ring lasers; superradiance; ASE circulation; Er-doped cavity loss fibre gain; amplified spontaneous emission power circulation; erbium ion; frequency shifter; homogeneously broadened three-level approximation; lasing spectrum uniformity; multifrequency erbium-doped fibre ring laser; multifrequency operation; numerical analysis; output power; periodic filter; steady-state single-frequency laser operation; wavelength;
Journal_Title :
Optoelectronics, IEE Proceedings -
DOI :
10.1049/ip-opt:20000286
