This review summarizes recent progress and emerging trends in multiparameter optical fiber sensing, emphasizing techniques that enable the simultaneous measurement of temperature, strain, acoustic waves, pressure, and other environmental quantities within a single sensing network. Such capabilities. This article explores the different types of Fiber Optic Sensors, their working principles, and various applications. A sensor is a device that measures a physical quantity and converts it into a. Needs for sensor miniaturization, versatile sensing solutions, and improved measurements' performances in difficult operating environments have recently driven considerable research in optical fiber sensor for multiparameter measurements. By upscaling the dimension of. What is a Fiber-optic Sensor? Fiber-optic sensors (also called optical fiber sensors) are fiber -based optical sensors for some quantity, typically temperature or mechanical strain, but sometimes also displacements, vibrations, pressure, acceleration, rotations (measured with optical gyroscopes. Fiber optic sensors—also known as optical fiber sensors—use optical fibers either as the sensing element or as a medium to transmit sensing signals.