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Proceedings Paper

Scaling issues in intra-cavity contacted oxide-aperture VCSELs for high-speed operation
Author(s): Young Min Song; Ki Soo Chang; Yong Tak Lee
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Paper Abstract

We investigate the influence of oxide aperture size on the performance of intracavity contacted oxide-aperture vertical-cavity surface-emitting lasers with asymmetric current injection. Several counteracting mechanisms are shown to result in size dependent behavior, which limits the performance of very small cavities. Reducing the oxide aperture is shown to improve the threshold current and the 3dB bandwidth. However, significant increase of optical losses is observed that is attributed to increase the threshold current density and to decrease the maximum output power. From the far-field measurement, we have shown that the smaller aperture VCSELs have large FWHM. Also, we have achieved the small signal modulation bandwidth of 10.3GHz with 4.5μm oxide aperture diameter at 9mA bias current.

Paper Details

Date Published: 6 October 2006
PDF: 8 pages
Proc. SPIE 6352, Optoelectronic Materials and Devices, 635215 (6 October 2006); doi: 10.1117/12.691212
Show Author Affiliations
Young Min Song, Gwangju Institute of Science and Technology (South Korea)
Ki Soo Chang, Gwangju Institute of Science and Technology (South Korea)
Yong Tak Lee, Gwangju Institute of Science and Technology (South Korea)

Published in SPIE Proceedings Vol. 6352:
Optoelectronic Materials and Devices
Yong Hee Lee; Fumio Koyama; Yi Luo, Editor(s)

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