A Probe-Shaped Sensor With FBG and Fiber-Tip Bubble for Pressure and Temperature Sensing
Bonan Liu, Junxian Luo, Shen Liu, Yanping Chen, Bo Huang, Changrai Liao, Yiping Wang
Abstract
Abstract A probe-shaped sensor for simultaneous temperature and pressure measurement was reported in this article. The effective length of the sensor was ∼2mm, consisting of a fiber Bragg grating (FBG) and a Fabry-Perot interferometer (FPI) with a nano silica diaphragm. The response sensitivities of the sensor for pressure and temperature were measured as −0.98 nm/MPa and 11.10 pm/°C, respectively. This sensor had an extremely low cross-sensitivity between pressure and temperature, which provided a significant potential in dual-parameter sensing.
Topics & Concepts
Fiber Bragg gratingMaterials scienceTemperature measurementPressure sensorFiber optic sensorInterferometryDiaphragm (acoustics)Pressure measurementOptical fiberSensitivity (control systems)OpticsBubbleFiberOptoelectronicsAcousticsComposite materialVibrationElectronic engineeringMeteorologyPhysicsEngineeringQuantum mechanicsMechanicsThermodynamicsAdvanced Fiber Optic SensorsPhotonic and Optical DevicesPhotonic Crystal and Fiber Optics