Ultrasensitive Optical Fiber Sensors Working at Dispersion Turning Point: Review
Shengyao Xu, Peng Kang, Zhijie Hu, Weijie Chang, Feng Huang
Abstract
Optical fiber sensors working at the dispersion turning point (DTP) have served as promising candidates for various sensing applications due to their ultrahigh sensitivity. In this review, recently developed ultrasensitive fiber sensors at the DTP, including fiber couplers, fiber gratings, and interferometers, are comprehensively analyzed. These three schemes are outlined in terms of operation principles, device structures, and sensing applications. We focus on sensitivity enhancement and optical transducers, we evaluate each sensing scheme based on the DTP principle, and we discuss relevant challenges, aiming to provide some clues for future research.
Topics & Concepts
Optical fiberSensitivity (control systems)Fiber optic sensorMulti-mode optical fiberFiberComputer scienceDispersion (optics)Focus (optics)Materials scienceElectronic engineeringOpticsEngineeringTelecommunicationsPhysicsComposite materialAdvanced Fiber Optic SensorsPhotonic and Optical DevicesSemiconductor Lasers and Optical Devices