Highly sensitive optical fibre refractometer

摘要

The invention relates to a highly sensitive optical fibre refractometer for determining the refractive index of media or of other physical quantities associated therewith. The object of the invention to specify such a refractometer while maintaining the principle of a curved optical fibre is achieved according to the invention when optical cladding mode-stripping means are arranged solely in the optical fibre section of the entry of light from the transmitter into the optical fibre upstream of the curved sensory region.