Fiber optic test equipment that is based on the phase-shifting interferometry

摘要

Discloses a method presence of binding of the sample solution in the sample, and the device for detecting the speed or amount or,. The device, an optical assembly having first and second reflective surfaces spaced apart a distance of more than 50nm by "d", and a light source for directing a light beam onto the second reflecting surface and the first contains the first surface is formed by the analyte-binding molecular layer. When placing the sample solution in the assembly, by detecting the phase shift of the light wave reflected from the first and second reflective surfaces, the detector of the device, a first reflective layer that results from binding to the analyte binding molecule of the analyte and operates to detect a change of thickness.