Title :
Modeling of polarization-mode competition in fiber DFB lasers
Author :
Rønnekleiv, Erlend ; Zervas, Michael N. ; Kringlebotn, Jon Thomas
Author_Institution :
Optoelectron. Res. Centre, Southampton Univ., UK
fDate :
9/1/1998 12:00:00 AM
Abstract :
A comprehensive model for steady-state analysis of polarization-mode competition in fiber distributed feedback (DFB) lasers is presented. Effects of polarization-dependent grating nonuniformities, polarization-dependent grating strength, coupling between the linear polarization states due to twist or Faraday rotation, back reflections, cross saturation from serially multiplexed lasers, as well as spatially and polarization-dependent gain hole burning are covered by the model. Regimes of single and dual polarization operation are identified for different types of polarization imperfections in the cavity. The output powers of the individual modes and the magnitudes of the hole-burning mechanisms are also calculated anti discussed
Keywords :
Faraday effect; diffraction gratings; distributed feedback lasers; fibre lasers; laser cavity resonators; laser modes; laser theory; optical hole burning; optical saturation; Faraday rotation; back reflections; cross saturation; dual polarization operation; fiber DFB laser modelling; linear polarization state coupling; output powers; polarization imperfections; polarization-dependent gain hole burning; polarization-dependent grating nonuniformities; polarization-dependent grating strength; polarization-mode competition; serially multiplexed lasers; single polarization operation; spatially-dependent gain hole burning; steady-state analysis; twist; Distributed feedback devices; Fiber lasers; Gratings; Laser feedback; Laser modes; Optical coupling; Optical fiber polarization; Optical reflection; Power generation; Steady-state;
Journal_Title :
Quantum Electronics, IEEE Journal of
