Over 25,000 hours operation of 1060 nm vertical cavity surface emitting lasers

High reliability, high transmission speed and low power consumption laser diodes are required for optical interconnect. We have developed 1060 nm Vertical Cavity Surface Emitting Lasers (VCSELs) with InGaAs/GaAs strained quantum wells, oxide-confined and double intracavity structures for the requirement. In this paper, an extremely long term aging test close to the actual operating temperature was performed in condition of 90°C and 6 mA. No degradation of optical power and threshold current has been observed up to 26,500 hours (3 years). The aging duration is equivalent to 80 years at 40°C and 10 years at 70°C using Ea = 0.7 eV. It indicates that our 1060 nm VCSELs can operate for the long duration.