Capacitive sensors have high sensitivity and low power consumption characteristics, but they are sensitive to environmental humidity and dust pollution. The packaging process is demanding, and the long-term stability is easily restricted by the aging of dielectric materials. The principle contributors: se sing element, cables/couplers, and sources/demodulation systems require very different reflection in regard to reliability and. This paper conducts a systematic analysis of the sensing mechanisms in fiber-optic pressure sensors, with a particular focus on the performance optimization effects of fiber structures and materials, while elucidating their application characteristics in different sensing scenarios. This review. The performance of fiber optic sensors can be evaluated based on several key factors including sensitivity, accuracy, resolution, linearity, hysteresis, repeatability, and stability. The scientific background is usually well developed; however, there are sometimes restrictions with respect to long-term reliable behaviour of sensor components and/or the long-term stability of the. Authors to whom correspondence should be addressed. These authors contributed equally to this work.
