Optical module with beam splitter on reflecting surface

摘要

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.

主权项

1. An optical module, comprising:
a substrate; a semiconductor laser diode (LD) mounted on the substrate; a monitor photodiode (PD) mounted on the substrate; and a resin body mounted on the substrate, the resin body installing the LD and the monitor PD therein, the resin body providing a mirror surface making an angle of 45° against the substrate to cause a total inner reflection for an optical beam coming from the LD, wherein the mirror surface includes at least one refracting surface that makes an angle less than 45° against the substrate, the refracting surface transmitting a portion of the optical beam coming from the LD and entering the mirror surface.