| 摘要 |
PROBLEM TO BE SOLVED: To obtain a shelf unit in which distributed compensation fiber modules can be mounted as much as possible in a shelf of a fixed size. SOLUTION: A shelf 122 has base part side guide rails 123 and 124 on the side plate 143 side. Each distributed compensation fiber module 200, 210, 220, 230 has a lower guide rail 250 on the lower surface and an upper guide rail 270 on the upper surface. The module 200 being inserted at first is inserted with the guide rails 250 and 270 being guided by the guide rails 123 and 124, respectively. The module 210 being inserted at first is inserted with the guide rails 260 and 280 being guided by the guide rails 250 and 270, respectively. In the shelf 122, the guide rails 260 and 280 are fitted to the guide rails 250 and 270, respectively, and the module 210 is linked with the module 200.
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