| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure fiber sensor capable of measuring pressure at low cost and with high reliability. SOLUTION: The optical fiber pressure sensor 111 comprises a detection section 117, where a multilayer film reflecting band filter 115 is formed between a termination surface 113a of an optical fiber 113 and a contact 119 for introducing the pressure to be measured; and a mechanism 118 for introducing and applying the pressure to be measured, to the optical band filter 115 at the detection section 117 in the direction of the film thickness on the optical axis of the optical fiber 113, thus enabling the pressure to be calculated from the reflection spectrum shift of the multilayer film reflection band filter, at the detection section observed at the light transmission side of the optical fiber. COPYRIGHT: (C)2008,JPO&INPIT
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