Open AccessEnergy‐efficient and temperature‐stable oxide‐confined 980 nm VCSELs operating error‐free at 38 Gbit/s at 85°C
Author(s) -
Li H.,
Wolf P.,
Moser P.,
Larisch G.,
Mutig A.,
Lott J.A.,
Bimberg D.
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2013.3941
Subject(s) - gigabit , vertical cavity surface emitting laser , materials science , optoelectronics , laser , chip , optics , wavelength , bandwidth (computing) , physics , telecommunications , computer science
980 nm vertical‐cavity surface‐emitting lasers (VCSELs) operating error‐free at 38 Gbit/s at 85°C with record 177 fJ of dissipated heat per bit are presented. The VCSELs are particularly well suited for short, very‐short and ultra‐short‐reach interboard, chip‐to‐chip and intrachip optical interconnects, where temperature stability, bandwidth and VCSEL density and the minimisation of waste heat are critical. Error‐free operation at 40 Gbit/s at 75°C and at 42 Gbit/s at 25°C is achieved. To date, 980 nm VCSELs are the most energy‐efficient of all VCSELs at 85°C at any wavelength.