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Role of Suppressed Mode in the Polarization Switching Characteristics of Optically Injected VCSELs

Qader, A.A. and Hong, Y. and Shore, K.A. (2013) Role of Suppressed Mode in the Polarization Switching Characteristics of Optically Injected VCSELs. IEEE Journal of Quantum Electronics, 49 ((2)). pp. 205-210. DOI: 10.1109/JQE.2012.2233721

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Abstract

Polarization switching characteristics of birefringent vertical cavity surface emitting lasers (VCSELs) subject to polarized optical injection are investigated experimentally. The role of the suppressed mode of VCSELs in reducing the injected optical power required for polarization switching (PS) has been identified. For orthogonal optical injection, the minimum optical injection power (Pinj) to induce PS is found to occur at a frequency detuning (FD) of -11 GHz corresponding to the VCSEL birefringence. The value of the minimum Pinj reduced significantly with increasing bias current. The FD for PS is independent of the VCSEL bias current, injected power level, and a defined range of polarization angles of the injected light. However, for parallel optical injection, the minimum FD for PS is normally found to be positive and dependent on the VCSEL bias current and injected optical power.

Item Type: Article
Subjects: Research Publications
Departments: College of Physical and Applied Sciences > School of Electronic Engineering
Date Deposited: 09 Dec 2014 16:45
Last Modified: 23 Sep 2015 03:08
ISSN: 0018-9197
URI: http://e.bangor.ac.uk/id/eprint/989
Identification Number: DOI: 10.1109/JQE.2012.2233721
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