FIBRE-OPTIC SENSOR BASED ON THE FABRY-PEROT PRINCIPLE

摘要

A fibre-optic sensor working according to the Fabry-Perot principle has an open capillary piece (5) into which at least one optic fibre (1) is inserted in such a way that its inserted end surface forms with an optic reflecting surface a gap with parallel faces perpendicular to the axis of the fibre. The optic fibre (1) is designed as a multimode fibre and has a numeric aperture lower than 0.2.