Title :
Circularly Polarized Optical Feedback Effects on the Polarization of VCSEL Emission
Author :
Qader, Abdulqader Abdullah ; Hong, Yanhua ; Shore, K. Alan
Author_Institution :
Sch. of Electron. Eng., Bangor Univ., Bangor, UK
fDate :
7/15/2012 12:00:00 AM
Abstract :
This letter investigates experimentally the effects of circularly polarized optical feedback (CPOF) on the polarization characteristics of vertical-cavity surface-emitting lasers (VCSELs). It is shown that CPOF imparts up to 30% circular polarization to the VCSEL emission. The degree of circular polarization acquired by the VCSEL emission is determined by the feedback power ratio and the VCSEL bias current. The effects of COPF have been compared to the influence of other species of linearly polarized optical feedback.
Keywords :
laser feedback; light polarisation; surface emitting lasers; VCSEL bias current; VCSEL emission; circular polarization; feedback power ratio; optical feedback; vertical-cavity surface-emitting lasers; Laser feedback; Optical attenuators; Optical feedback; Optical surface waves; Polarization; Vertical cavity surface emitting lasers; Circular polarization; optical feedback; semiconductor lasers; vertical-cavity surface-emitting lasers (VCSELs);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2200038
