A strain reflection-based fiber optic sensor using thin core and standard single-mode fibers
D. Jáuregui-Vazquez, Jeroen P. Korterik, C.E. Osornio-Martinez, J. M. Estudillo-Ayala, Herman L. Offerhaus, J. A. Álvarez-Chávez
Abstract
We propose and demonstrate a fiber optic strain sensor based on a simple splice between a thin core fiber and a piece of conventional single-mode fiber. Mode dispersion generates an interference reflection spectrum sensitive to strain and temperature. The sensor offers a competitive strain sensitivity of 2.4 pm/μɛ, good linearity (R2=0.9969), and a cursory repeatability analysis yielded variation. The thermal studies indicate minimal cross-sensitivity (2.9 μɛ/°C). The sensor offers a simple implementation without any intricate manufacturing.
Topics & Concepts
Materials scienceOpticsCore (optical fiber)Optical fiberSingle-mode optical fiberRepeatabilitySensitivity (control systems)Fiber optic sensorReflection (computer programming)LinearityFiberStrain (injury)Interference (communication)Composite materialComputer scienceTelecommunicationsElectronic engineeringPhysicsChannel (broadcasting)MedicineInternal medicineChromatographyEngineeringProgramming languageChemistryAdvanced Fiber Optic SensorsPhotonic and Optical DevicesSemiconductor Lasers and Optical Devices