| 摘要 |
PROBLEM TO BE SOLVED: To provide a bidirectional optical module which can reduce the manufacturing cost by simplifying the manufacturing process, reducing the assembling time and reducing the number of components in the whole module. SOLUTION: The module includes a first lens 15 which converts the output light emitting from a light emitting element 12 into a parallel beam, a first prism which totally reflects the output light as the parallel beam from the first lens 15 on a reflecting face 24, and a spherical lens 17 which has the same optical axis as the output light reflected on the reflecting face 24 and which converts the output light supplied in the right opposite direction of the propagation direction into a parallel beam. A second prism 23 having one end face 25 tilted with respect to the propagation direction of the output light and the input light is placed to allow the boundary on the end face 25 to be positioned in the parallel beams of input light and output light, so that the output light reflected on the reflecting face 24 is partially transmitted while a part of the input light converted into a parallel beam by the spherical lens 17 is totally reflected on the end face 25 and guided to a light receiving element 13. The spherical lens 17 optically couples the transmitted output light to an optical fiber 18. COPYRIGHT: (C)2006,JPO&NCIPI
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