Title :
30 GHz bandwidth 850 nm VCSEL with sub-100 fJ/bit energy dissipation at 25–50 Gbit/s
Author :
Haglund, E. ; Westbergh, P. ; Gustavsson, J.S. ; Haglund, E.P. ; Larsson, A. ; Geen, M. ; Joel, A.
Author_Institution :
Dept. of Microtechnol. & Nanosci., Chalmers Univ. of Technol., Göteborg, Sweden
Abstract :
A high-speed and energy-efficient oxide-confined 850 nm vertical-cavity surface-emitting laser (VCSEL) for optical interconnects is presented. A record-high modulation bandwidth of 30 GHz is reached for a 3.5 μm oxide aperture VCSEL, with 25 GHz bandwidth already at a bias current of 1.8 mA. The high bandwidth at low currents enables energy-efficient transmission with a dissipated heat energy in the VCSEL of <;100 fJ/bit at 25, 40 and 50 Gbit/s.
Keywords :
laser cavity resonators; optical interconnections; optical modulation; surface emitting lasers; VCSEL; bandwidth 30 GHz; bias current; bit rate 25 Gbit/s to 50 Gbit/s; current 1.8 mA; dissipated heat energy; energy dissipation; optical interconnects; record-high modulation bandwidth; size 3.5 mum; vertical-cavity surface-emitting laser; wavelength 850 nm;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2015.0785
