| 摘要 |
PROBLEM TO BE SOLVED: To provide a relatively small and further improved detection device that measures parameters such as the flow rate, pressure, temperature, mass flow rate of the flow of fluid or gas. SOLUTION: An optical fiber detection system 10 includes: a housing 14 placed in a flow channel 12; and an optical fiber sensor 16. The optical fiber sensor 16 includes: an optical fiber 28 that is fixed in the housing 14; a Bragg grating 36; a light source 38 for sending light to the optical fiber; and a detector 39 for detecting light filtered by the Bragg grating 36 of the optical fiber 28, and for monitoring a change in the wavelength of the detected light. The optical fiber 28 is substantially perpendicular to the flow channel 12, and a flow passing through the flow channel 12 can apply pressure to the optical fiber 28 and cause deformation in the Bragg grating 36. COPYRIGHT: (C)2010,JPO&INPIT |
