Berlin 2015 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 92: VCSELs, optical interconnects and Si photonics
HL 92.2: Talk
Thursday, March 19, 2015, 16:00–16:15, EW 202
Record-large 23 GHz modulation bandwidth at 85°C of energy-efficient 980 nm VCSELs for optical interconnects — •Philip Moser1, Gunter Larisch1, Maya Volwahsen1, James Lott1, and Dieter Bimberg1,2 — 1Institut für Festkörperphysik und Zentrum für Nanophotonik, Technische Universität Berlin, Berlin, Deutschland — 2King Abdulaziz University, Jeddah, Saudi Arabia
Energy-efficient oxide-confined vertical-cavity surface-emitting lasers (VCSELs) emitting at 980 nm, particularly well suited for very short reach (< 2m) and ultra short-reach (< 2 mm) optical interconnects, are presented. At 85°C a record-large 23 GHz modulation bandwidth f3dB is achieved with a 5 *m oxide-aperture diameter VCSEL. At 25°C the maximum f3dB is 24.7 GHz. At lower currents before the saturation of f3dB our VCSELs are faster and more energy-efficient at 85°C than at 25°C, making them especially well suited for future optical interconnect technologies with terabit performance, high bandwidth density and low power dissipation.