8 May 2012 High-speed VCSELs for energy efficient computer interconnects
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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.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Philip Moser, Philip Moser, Philip Wolf, Philip Wolf, James A. Lott, James A. Lott, Gunter Larisch, Gunter Larisch, Alexey Payusov, Alexey Payusov, Alex Mutig, Alex Mutig, Waldemar Unrau, Waldemar Unrau, Nikolay N. Ledentsov, Nikolay N. Ledentsov, Werner Hofmann, Werner Hofmann, Dieter Bimberg, Dieter Bimberg, } "High-speed VCSELs for energy efficient computer interconnects", Proc. SPIE 8432, Semiconductor Lasers and Laser Dynamics V, 843202 (8 May 2012); doi: 10.1117/12.923054; https://doi.org/10.1117/12.923054

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