Parallel structured optical fiber in-line Fabry–Perot interferometers for high temperature sensing
X. L. Cui, Hua Zhang, D. N. Wang
Abstract
We propose and demonstrate parallel structured optical fiber in-line Fabry-Perot interferometers for high temperature sensing. The device consists of three Fabry-Perot cavities in parallel connection, which allows three independent fringe patterns superimposed at its output, and, as a result, a number of dominant fringe peaks/dips appear, thus enabling unambiguous measurement in a large range. The device is featured with compact size, robust structure, and excellent high temperature sustainability, which makes it promising in extreme environment monitoring.
Topics & Concepts
Fabry–Pérot interferometerAstronomical interferometerOpticsInterferometryOptical fiberLine (geometry)Free spectral rangeMaterials scienceOptoelectronicsPhysicsLaserGeometryMathematicsAdvanced Fiber Optic SensorsPhotonic and Optical DevicesAdvanced Fiber Laser Technologies