Fiber-optic microcavity temperature and humidity sensor based on the Vernier effect
A Vernier effect–based fiber-optic microcavity sensor is proposed for simultaneous temperature and humidity sensing. Using a sensing Fabry–Perot interferometer (FPI) with a UV-adhesive cavity and a reference air-cavity FPI in parallel, the Vernier effect amplifies spectral shifts. The sensor exhibits temperature sensit...