Sumitomo Metal Mining Company, Ltd.

Mikio Uemura

Akio Watanabe

Hideharu Okami

Junji Iida

A bidirectional optical module having a devicefor emitting transmitting signal light, an optical fiberwhich the transmitting signal light from the device enters, a light-receiving devicewhich light from the optical fiber enters, and a wavelength splitting filter. The transmitting signal light emitted from the device is sent forward through the optical fiber, and the receiving signal light is received through the optical fiber. The bidirectional optical module has an optical device (optical isolator) of a reflection polarizerbonded to an end face of the optical fiber, a Faraday rotatordisposed integrally on the reflection polarizer and an absorption polarizerdisposed on an optical path extending between the device and the filter. The reflection polarizer has a wavelength dependency which functions as a polarizer for the transmitting signal light, but does not function as a polarizer for the receiving signal light.

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Tokyo, Japan

Mikio Uemura