Semiconductor laser module

摘要

A semiconductor laser module includes a light-emitting element, an optical resonator having a pair of opposed reflectors for mutually reflecting the light emitted from the light-emitting element, and an optical fiber for leading out the laser light generated by the light-emitting element. The semiconductor laser module is used as a light source in a wavelength multiplex communication system. The light-emitting element is contained in a package. One of the reflectors of the optical resonator is a reflective film formed on one edge face of the light-emitting element and the other reflector is a diffraction grating formed close to the end portion of the optical fiber.