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Proceedings Paper

High-speed VCSELs for energy efficient computer interconnects
Author(s): Philip Moser; Philip Wolf; James A. Lott; Gunter Larisch; Alexey Payusov; Alex Mutig; Waldemar Unrau; Nikolay N. Ledentsov; Werner Hofmann; Dieter Bimberg
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Paper Abstract

State-of-the-art vertical-cavity surface-emitting laser (VCSEL) based optical interconnects for application in high performance computers and data centers are reviewed. Record energy-efficient data transmission is demonstrated with 850 nm single-mode VCSELs for multimode optical fiber lengths up to 1 km at bit rates up to 25 Gb/s. Total power consumption of less than 100 fJ/bit is demonstrated for VCSELs for the first time. Extremely temperature stable 980-nm VCSELs show lasing up to 200 °C. Error-free 44 Gb/s operation at room temperature and 38 Gb/s up to 85 °C is achieved with these devices. We present record-high bit rates in a wide temperature range of more than 160 °C. Record energy-efficient data-transmission beyond 30 Gb/s is achieved at 25 °C for this wavelength range. In view of the high speed and advanced temperature stability we suggest long wavelength VCSELs for energy-efficient short and very short-distance optical interconnects for future high performance computers.

Paper Details

Date Published: 8 May 2012
PDF: 8 pages
Proc. SPIE 8432, Semiconductor Lasers and Laser Dynamics V, 843202 (8 May 2012); doi: 10.1117/12.923054
Show Author Affiliations
Philip Moser, Technische Univ. Berlin (Germany)
Philip Wolf, Technische Univ. Berlin (Germany)
James A. Lott, Vertically Integrated Systems GmbH (Germany)
Gunter Larisch, Technische Univ. Berlin (Germany)
Alexey Payusov, Technische Univ. Berlin (Germany)
St. Petersburg Academic Univ. (Russian Federation)
Alex Mutig, Technische Univ. Berlin (Germany)
Waldemar Unrau, Technische Univ. Berlin (Germany)
Nikolay N. Ledentsov, Vertically Integrated Systems GmbH (Germany)
Werner Hofmann, Technische Univ. Berlin (Germany)
Dieter Bimberg, Technische Univ. Berlin (Germany)
King Abdulaziz Univ. (Saudi Arabia)

Published in SPIE Proceedings Vol. 8432:
Semiconductor Lasers and Laser Dynamics V
Krassimir Panajotov; Marc Sciamanna; Angel Valle; Rainer Michalzik, Editor(s)

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