Polarization Switching Dependence of VCSEL on Variable Polarization Optical Feedback

Nazhan, Salam and Ghassemlooy, Zabih (2017) Polarization Switching Dependence of VCSEL on Variable Polarization Optical Feedback. IEEE Journal of Quantum Electronics, 53 (4). pp. 1-7. ISSN 0018-9197

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Official URL: https://doi.org/10.1109/JQE.2017.2718550

Abstract

In this paper, the influence of variable-angle polarization-rotated optical feedback on the polarization switching properties of vertical-cavity surface-emitting lasers (VCSELs) is investigated theoretically and experimentally. The optical feedback (OF) level and the rotated polarization angle θp of OF are considered. Two configurations of OF are used to re-injected parallel and orthogonal polarization modes back into the VCSEL. For the parallel OF, it is shown that polarization switching (PS) of VCSELs' modes can occur at a fixed feedback level and bias current with variable θp . However, in case of orthogonal optical feedback, PS occurs only at certain values of θp , particularly when the intensities of two polarization modes become comparable with each other. In the theoretical model for both OF conditions, there is good agreement between the experimental measurements and recent theoretical results reported in the literature.

Item Type: Article
Uncontrolled Keywords: Vertical-cavity surface emitting lasers (VCSELs), variable polarization angle, optical feedback, polarization switching (PS)
Subjects: F300 Physics
H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Becky Skoyles
Date Deposited: 03 Aug 2017 09:03
Last Modified: 30 Oct 2017 14:10
URI: http://nrl.northumbria.ac.uk/id/eprint/31488

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