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Proceedings Paper

Birefringence tuning of VCSELs
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Paper Abstract

Using the elasto-optic effect we increase the frequency difference between the two orthogonally polarized modes, the so-called birefringence splitting, in standard single-mode oxide-confined GaAs-based vertical-cavity surface-emitting lasers (VCSELs). The birefringence may play an important role in the realization of ultrafast polarization modulation for high-speed data transmission. For practical implementation it is necessary to miniaturize the strain-inducing mechanism for birefringence tuning in VCSELs. The goal is the realization of integrated structures on the VCSEL chip. In this paper we discuss our work on miniaturized bending devices as the next step in achieving extremely high birefringence splitting. Furthermore measurements with integrated hotspot structures on VCSEL chips were made to reach much smaller scales for birefringence fine-tuning.

Paper Details

Date Published: 28 April 2016
PDF: 6 pages
Proc. SPIE 9892, Semiconductor Lasers and Laser Dynamics VII, 989222 (28 April 2016); doi: 10.1117/12.2228091
Show Author Affiliations
Tobias Pusch, Univ. Ulm (Germany)
Marwan Bou Sanayeh, Notre Dame Univ., Louaize (Lebanon)
Markus Lindemann, Ruhr-Univ. Bochum (Germany)
Nils C. Gerhardt, Ruhr-Univ. Bochum (Germany)
Martin R. Hofmann, Ruhr-Univ. Bochum (Germany)
Rainer Michalzik, Univ. Ulm (Germany)

Published in SPIE Proceedings Vol. 9892:
Semiconductor Lasers and Laser Dynamics VII
Krassimir Panajotov; Marc Sciamanna; Angel Valle; Rainer Michalzik, Editor(s)

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