This paper presents a comparative analysis and system-level optimization of the main sensitivity enhancement methods, including mechanical amplification, functional coatings and composite embedding, interferometric schemes, and advanced spectral signal processing. Fiber-optic sensing (FOS) technology has emerged as a cutting-edge research focus in the sensor field due to its miniaturized structure, high sensitivity, and remarkable electromagnetic interference immunity. A balanced integrated approach enables improvement of equivalent strain resolution. Fiber-optic sensors offer the same benefits that optical fibers deliver to the telecommunications industry. They are immune to EMI, nonconductive, electrically passive, low loss, high bandwidth, small, lightweight, relatively low cost, and so on.
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