Author :
Wipiejewski, T. ; Wolf, H.D. ; Korte, L. ; Huber, W. ; Kristen, G. ; Hoyler, C. ; Hedrich, H. ; Kleinbub, O. ; Popp, M. ; Kaindl, J. ; Rieger, A. ; Albrecht, T. ; Mueller, J. ; Orth, A. ; Spika, Z. ; Lutgen, S. ; Pflaeging, H. ; Harrasser, J.
Abstract :
We discuss the performance and reliability of oxide confined VCSELs optimized for datacom applications. The devices are employed in the Siemens PAROLITM high performance parallel optical link. This optical link provides 12 parallel channels with a total bandwidth exceeding 12 Gbit/s. The VCSEL threshold current is approximately 3 mA. The threshold current variation within the array is less than 50 μA. The electrical series resistance is about 50 Ω. The emission wavelength of approximately 850 nm matches the specification of common standards like the HIPPI 6400. Life times of the oxide confined VCSELs are several million hours under normal operating conditions. The life time for an array drops to a single device, but is still larger than 1 million hours. The devices exhibit good stability under environmental stress conditions such as temperature cycling and damp heat storage
Keywords :
laser reliability; optical communication equipment; semiconductor laser arrays; surface emitting lasers; 12 Gbit/s; 3 mA; 50 ohm; 850 nm; HIPPI 64; Siemens PAROLI high performance parallel optical link; damp heat storage; data communication; electrical series resistance; environmental stability; lifetime; oxide confined VCSEL array; reliability; temperature cycling; threshold current; Apertures; Bandwidth; Distributed Bragg reflectors; Electric resistance; Optical fiber communication; Optical fibers; Stress; Surface emitting lasers; Threshold current; Vertical cavity surface emitting lasers;
