| 摘要 |
PROBLEM TO BE SOLVED: To enable reduction in measuring noise of an optical fiber type noiseless gravimeter. SOLUTION: A light signal is branched and transmitted to a sensing fiber 2 which adds with strain, in response to the load of a material 3 to be measured and a reference fiber 1 for outputting an output light as a reference. The strain, in response to the load of the material 3, is added to the fiber 2, and the fiber 1 outputs the output light as the reference. The optical fiber type noiseless gravimeter measures the load from a phase difference of the output lights of both the fibers 1 and 2, and the fiber 2 is held by potting with a second polymer material 6, in a container 10 provided at a rib 16 (support) of a sensing part 4.
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