Title :
Analysis of multiple wavelength DFB fiber lasers
Author :
Løvseth, Sigurd Weidemann ; Stepanov, Dmitrii Yu
Author_Institution :
Dept. of Phys. Electron., Norwegian Univ. of Sci. & Technol., Trondheim, Norway
fDate :
6/1/2001 12:00:00 AM
Abstract :
The behavior of multiwavelength distributed feedback fiber lasers is simulated in a comprehensive numerical model. Multiple fundamental modes can coexist, even though the coupling coefficients of their respective refractive index gratings are not equal, due to induced dynamic gain gratings. We have investigated the effect on the lasing state of variations in coupling strengths, gain parameters, grating Bragg frequency separation, relative phase between the gratings, length of the structure relative to the beat lengths between the gratings, grating center phase-shift errors, and saturation level of the UV-induced refractive index change
Keywords :
distributed feedback lasers; fibre lasers; laser modes; laser theory; optical saturation; UV-induced refractive index change; comprehensive numerical model; coupling coefficients; fundamental modes; gain parameters; grating Bragg frequency separation; grating center phase-shift errors; induced dynamic gain gratings; multiple wavelength DFB fiber lasers; multiwavelength distributed feedback fiber lasers; refractive index gratings; saturation level; Bragg gratings; Distributed feedback devices; Erbium-doped fiber lasers; Fiber gratings; Fiber lasers; Frequency; Laser feedback; Laser modes; Optical fiber polarization; Optical fibers;
Journal_Title :
Quantum Electronics, IEEE Journal of
