| 摘要 |
PROBLEM TO BE SOLVED: To provide a fiber optic sensor unit capable of accurately measuring pressure values and being manufactured at low costs. SOLUTION: The fiber optic sensor unit 10 is formed by connecting (coupling) two fiber optic sensor cables 11 and 11 arranged in parallel to each other at prescribed intervals by connecting parts 12. The outer circumferential surface 21a of a core 21 is coated with an intermediate layer (skin layer) 24. The intermediate layer (skin layer) 24 holds an optical fiber 25 for pressure measurement with a protective layer 26. The optical fiber 25 for pressure measurement is helically wound on the outer circumferential surface 24a of the intermediate layer 24. COPYRIGHT: (C)2009,JPO&INPIT
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