| 摘要 |
PROBLEM TO BE SOLVED: To provide a compact, multicore-compatible optical transmission path duplexing apparatus.SOLUTION: The optical transmission path duplexing apparatus provided converts wavelengths of uplink signal light emitted from a subscriber side transmission device on each core of a tape conductor, downlink signal light emitted from a station side transmission device, and test light emitted from an optical path length difference detection light source to different wavelengths, and can thus use an optical path length adjustment section common to the cores of the tape conductor for compatibility with a multicore tape conductor. The optical transmission path duplexing apparatus provided is also more compact than an existing system of installing, in parallel, as many optical transmission path duplexing apparatuses as the tape cores. |
