13 March 2013 Impact of the aperture diameter on the energy efficiency of oxide-confined 850 nm high speed VCSELs
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Abstract
A new record for energy-efficient oxide-confined 850 nm vertical-cavity surface-emitting lasers (VCSELs) particularly suited for optical interconnects is presented. Error-free performance at 25 Gb/s is achieved with only 56 fJ/bit of dissipated energy per quantum of information. The influence of the oxide-aperture diameter on the energy-efficiency of our VCSELs is determined by comparing the total and dissipated power versus the modulation bandwidth of devices with different aperture diameters. Trade-offs between various parameters such as threshold current, differential quantum efficiency, wall plug efficiency and differential resistance are investigated with respect to energy-efficiency. We show that our present single-mode VCSELs are more energy-efficient than our multimode ones.
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Philip Moser, Philip Moser, James A. Lott, James A. Lott, Philip Wolf, Philip Wolf, Gunter Larisch, Gunter Larisch, Hui Li, Hui Li, Nikolay N. Ledentsov, Nikolay N. Ledentsov, Dieter Bimberg, Dieter Bimberg, } "Impact of the aperture diameter on the energy efficiency of oxide-confined 850 nm high speed VCSELs", Proc. SPIE 8639, Vertical-Cavity Surface-Emitting Lasers XVII, 86390V (13 March 2013); doi: 10.1117/12.2002446; https://doi.org/10.1117/12.2002446
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