| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical transmission module of a bidirectional communication type that prevents cross talk as much as possible to prevent malfunction. Ž<P>SOLUTION: An optical transmission module includes one or more transmission optical devices 19 for transmitting an optical signal L1, one or more reception optical devices 20 for receiving another optical signal L2, and an optical member 5 for converting optical paths for one or more optical signals L1 and one or more optical signals L2 having a different wavelength from the optical signal L1. The optical transmission module includes two or more inclined planes angled relative to the optical axis of the optical fiber 2, one of the two or more inclined planes has an optical filter 17 for allowing these optical signals to partially or almost completely pass or partially reflect the optical signals; a reflecting plane 15r for reflecting the optical signal L1 or L2 is formed on another one of the two or more inclined planes; a fiber lens 14f is provided at a fiber-side end 5f facing the optical fiber 2. The optical filter 17 has demultiplexing characteristics, according to the arrangement of the transmission optical device array 19 and reception optical device array 20, that prevents an optical signal L1 sent from the transmission optical device array 19 from leaking into the transmission optical device at the distant optical transmission module. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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