Parallel Optical-Transmission Module Using Vertical-Cavity Surface-Emitting Laser Array and Micro-Optical Bench (MOB)

In this paper, we present a scheme of a parallel optical transmission module using a vertical-cavity surface-emitting laser (VCSEL) array and a micro-optical bench (MOB). We have fabricated a prototype using a VCSEL array emitting at 850 nm and a MOB for the first time, and demonstrated the feasibility of a two-dimensional alignment-free optical interconnect module. No noticeable degradation of I-V, and I-L characteristics of the packaged VCSEL array was observed after the proposed packaging process. The excess loss of the MOB alignment scheme using a multi-mode fiber was evaluated to be about 0.5 dB.