| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-port spectroscope, which can independently and simultaneously deal with a multi-core optical fiber or a plurality of optical transmission lines. SOLUTION: The plurality of optical input ports 1 input beams to be measured, respectively, and the inputted beams to be measured are respectively converted into collimated beams (parallel beams) by a plurality of collimators 2 corresponding to the plurality of input ports one by one. The converted collimated beams are incident on a grating 3 so as to be emitted to a reflector 4, as the diffracted beams. The emitted beams are reflected by the reflector 4 and are again incident on the grating 3. The incident diffracted beams are again diffracted, and are incident on a plurality of concentrators 5 corresponding to the plurality of input ports one by one so as to be concentrated. The concentrated beams are received by the light receivers 6 corresponding to the plurality of concentrators 5 one by one, and are converted into electrical signal so as to be outputted from the spectroscope 10. COPYRIGHT: (C)2004,JPO&NCIPI
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