Title :
Polarization characteristics of fiber DFB lasers related to sensing applications
Author :
Ronnekleiv, Erlend ; Ibsen, Morten ; Cowle, Gregory J.
Author_Institution :
Optoplan AS, Trondheim, Norway
fDate :
6/1/2000 12:00:00 AM
Abstract :
An experimental and theoretical investigation of how the polarization mode competition and beat frequency of Er-doped fiber distributed-feedback lasers depend on perturbations such as localized transverse forces, back reflections, or changes in pump polarization is reported. Good agreement between the experiments and a comprehensive theoretical model is obtained. Use of a dual-polarization laser as a transverse force sensor with a resolution on the order of 1-100 nN//spl radic/Hz above 20 Hz is also discussed.
Keywords :
distributed feedback lasers; fibre lasers; force measurement; force sensors; laser modes; measurement by laser beam; optical fibre polarisation; optical pumping; Er-doped fiber distributed-feedback lasers; back reflections; beat frequency; dual-polarization laser; fiber DFB lasers; localized transverse forces; optical sensors; polarization characteristics; polarization mode competition; pump polarization; sensing applications; theoretical model; transverse force sensor; Fiber lasers; Frequency; Laser excitation; Laser modes; Laser theory; Laser transitions; Optical fiber polarization; Optical fiber sensors; Optical reflection; Pump lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
