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

Salam Nazhan, Zabih Ghassemlooy, Krishna Busawon, Asghar Gholami

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

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.
Original languageEnglish
Pages (from-to)240-245
JournalOptics and Laser Technology
Volume75
DOIs
Publication statusPublished - 8 Aug 2015

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