| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive and compact two-way optical communication module in which a single optical fiber is used to realize a fully duplex optical communication and an interference of a transmitting source light and a receiving side light, an interference due to an internal scattered light in particular, is scarce. SOLUTION: A divergence part 25 is formed around the outer periphery of a transmitting lens 6, a thin film reflection mirror 7 which condenses received light 9 is provided, thus the interference due to an internal scattered light is diminished. COPYRIGHT: (C)2003,JPO
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