| 摘要 |
PROBLEM TO BE SOLVED: To provide a total reflection type refractive index sensor compact, best suited to measure a refractive index of high temperature liquid and capable of measuring a refractive index with high accuracy. SOLUTION: The emission surface 9 of a wave guide layer and a photo detector 16 are connected by an optical fiber array 12. Totally reflected light from the contact face 8 between a testee M and the wave guide layer is detected by the photodetector 16. It is desirable to set the optical fiber diameter and layout of optical fibers of the optical fiber array 12 so that the accuracyΔn of a refractive index measured on the basis of a total reflexcion critical angle isΔn<=5×10<-4> .
|
