Investigation of polarization switching of VCSEL subject to intensity modulated and optical feedback

Nazhan, Salam, Ghassemlooy, Zabih, Busawon, Krishna and Gholami, Asghar (2015) Investigation of polarization switching of VCSEL subject to intensity modulated and optical feedback. Optics and Laser Technology, 75. pp. 240-245. ISSN 0030-3992

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Abstract

This study presents the results of an experimental investigation of the polarization switching (PS) of vertical-cavity surface-emitting lasers (VCSELs) using the so-called polarization-rotated optical feedback mechanism. In particular, the experiments is performed by changing the laser driving current, optical feedback (OF) level, modulation signal parameters, such as frequency, modulation-depth in order to assess their influences on the PS of VCSEL. We show that a smaller polarization angle θp is required to realize PS with increasing the level of OF. Moreover, for a fixed OF level and increased bias current a smaller θp is required to ensure PS. However, for a fixed OF and variable modulation parameters, both the frequency and modulation-depth lead to the elimination of PS over the entire range of measurement.

Item Type:	Article
Uncontrolled Keywords:	variable polarization optical feedback, polarization switching, modulation signal, vertical-cavity surface emitting lasers
Subjects:	F300 Physics H600 Electronic and Electrical Engineering
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User:	Ay Okpokam
Date Deposited:	01 Sep 2015 10:14
Last Modified:	12 Oct 2019 19:21
URI:	http://nrl.northumbria.ac.uk/id/eprint/23633

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