With their immunity to electromagnetic interference and ability to operate in harsh environments, fiber optic sensors find extensive use in structural health monitoring, oil and gas pipeline monitoring, and environmental monitoring. A fiber optic sensor measures a physical quantity by modulating the intensity, spectrum, phase, or polarization of light traveling through the optical fiber system. It's a device that converts light rays into electronic signals. Think of it like a photoresistor, which changes its resistance based. Key advantages of fiber optic technology include its lightweight design, low signal loss, compact size, ability to transmit over long distances, and strong data security—making it a powerful solution for modern communication needs. The optical fiber consists of the core and the cladding, which have different refractive indexes.
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