Title :
External feedback optimization by means of polarization control in fiber Bragg grating stabilized 980-nm pump lasers
Author :
Pliska, Tomas ; Matuschek, Nicolai ; Mohrdiek, Stefan ; Hardy, Amos ; Harder, Christoph
Author_Institution :
Nortel Networks Opt. Components AG, Zurich, Switzerland
Abstract :
Effects of polarization change in the feedback provided by fiber Bragg gratings that stabilize 980-nm pump lasers are investigated. The effective feedback in the proper transverse-electric polarization is calculated from an easily measured parameter, describing the polarization at the fiber grating. This provides a useful experimental tool to investigate the effect of feedback loss due to polarization change that can occur in nonpolarization maintaining fibers. On the basis of our calculations, we give guidelines for optimum fiber layout to minimize polarization change.
Keywords :
Bragg gratings; laser feedback; laser transitions; light polarisation; optical fibre communication; optical losses; optical pumping; optimisation; semiconductor lasers; 980 nm; external feedback optimization; feedback loss; fiber Bragg grating stabilized pump lasers; fiber grating polarisation; nonpolarization maintaining fibers; optimum fiber layout; polarization change; polarization control; transverse-electric polarization; Bragg gratings; Erbium-doped fiber lasers; Fiber gratings; Laser excitation; Laser feedback; Laser stability; Laser transitions; Optical fiber polarization; Pump lasers; Semiconductor lasers;
Journal_Title :
Photonics Technology Letters, IEEE
