Patent 9470857 was granted and assigned to Sumitomo Electric Industries on October, 2016 by the United States Patent and Trademark Office.
An optical module providing laser diodes (LD) and monitor PDs is disclosed. The LDs and monitor PDs are mounted on a module substrate that also mounts a resin body. The resin body includes a mirror surface which causes a total inner reflection for the optical beams coming from the LDs toward the inner fibers set in one side of the resin body. The mirror surface further provides a blip to refract portions of the optical beams toward the monitor PDs.