Title :
Dynamical noise in single-mode distributed feedback fiber lasers
Author_Institution :
Maritime Oper. Div., Defence Sci. & Technol. Organ., Edinburgh, Australia
Abstract :
The dynamics of erbium distributed feedback fiber lasers close to steady state is analyzed taking into account spatial hole burning and the nonuniform modefield distribution. A set of linearized equations is derived and used to obtain theoretical amplitude and frequency noise spectra for spontaneous emission noise and generic pump power noise. Analytic formula for important laser characteristics including pump slope efficiency and relaxation oscillation frequency are also obtained. It is found that the spatial distribution of the laser mode plays and important role in determining the output characteristics of the laser.
Keywords :
Bragg gratings; distributed feedback lasers; erbium; fibre lasers; laser modes; laser noise; optical hole burning; optical pumping; spontaneous emission; amplitude noise spectra; dynamical noise; frequency noise spectra; generic pump noise; laser mode; linearized equations; nonuniform modefield distribution; pump slope efficiency; relaxation oscillation frequency; single-mode distributed feedback fiber lasers; spatial distribution; spatial hole burning; spontaneous emission noise; Distributed feedback devices; Erbium-doped fiber lasers; Fiber lasers; Frequency; Laser feedback; Laser modes; Laser noise; Laser theory; Noise level; Pump lasers; DFB; Distributed feedback; erbium; fiber Bragg grating; laser modes; laser noise; lasers; optical fiber lasers; optical hole burning;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2004.833240
