Simultaneous measurement of strain and temperature using Fabry–Pérot interferometry and antiresonant mechanism in a hollow-core fiber
Chong He, Cheng Zhou, Qian Zhou, Shiyi Xie, Mengzhe Xiao, Jiajun Tian, Yong Yao
Abstract
A fiber-optic sensor for the simultaneous measurement of strain and temperature is proposed and experimentally demonstrated based on Fabry-Prot (FP) interference and the antiresonance (AR) mechanism. The sensor was implemented using a single-mode fiber (SMF)-hollow-core fiber-SMF structure. A temperature sensitivity of 21.11 pm/C was achieved by tracing the troughs of the envelope caused by the AR mechanism, and a strain sensitivity of 2 pm/ was achieved by detecting the fine fringes caused by the FP cavity. The results indicate that the dual-parameter sensor is stable and reliable.
Topics & Concepts
Fabry–Pérot interferometerAntiresonanceMaterials scienceOpticsCore (optical fiber)InterferometryOptical fiberFiberFiber optic sensorInterference (communication)Sensitivity (control systems)Temperature measurementPhotonic-crystal fiberStrain (injury)Graded-index fiberOptoelectronicsComposite materialPhysicsQuantum mechanicsElectronic engineeringInternal medicineEngineeringChannel (broadcasting)WavelengthElectrical engineeringMedicinePiezoelectricityAdvanced Fiber Optic SensorsPhotonic and Optical DevicesSemiconductor Lasers and Optical Devices