Vibration sensing is critical to monitor and ultimately preserve the health state of engineering systems. These systems with a large structure are typically working in some harsh environments including strong magnetic fields. However, traditional electrical sensors are difficult to accurately measure the vibration under harsh environments. Besides these instinct advantages of normal fiber optic sensors (FOS) sensors such as compact size, passive sensing, resistance to electromagnetic interference, etc., fiber Bragg grating (FBG) sensors have a capability of distributed sensing based on wavelength demodulation and resistance to light intensity fluctuation and unwanted fiber bending losses. Such merits lead them to be a hot topic in FOS field and excellent candidates for vibration sensing. Three types of FBG-based vibration sensors have been classified based on the difference of vibration-strain coupling way to FBG in this survey, which are pasted FBG-based, axial property of FBG-based and transverse property of FBG-based, respectively. FBG-based vibration sensors’ principles and designs have been introduced and discussed. Recent advances in the applications of FBG-based vibration sensors have been investigated. The limitations and prospects of the FBG-based vibration sensing technologies have been analyzed and discussed.

中文翻译：

---

基于光纤布拉格光栅的振动传感器的最新进展和趋势：综述

振动传感对于监控并最终保持工程系统的健康状态至关重要。这些具有大型结构的系统通常在一些恶劣的环境中工作，包括强磁场。然而，传统的电传感器难以准确测量恶劣环境下的振动。除了常规光纤传感器 (FOS) 传感器的这些本能优势，如体积小、无源传感、抗电磁干扰等，光纤布拉格光栅 (FBG) 传感器还具有基于波长解调和抗光的分布式传感能力强度波动和不需要的光纤弯曲损耗。这些优点使它们成为 FOS 领域的热门话题和振动传感的优秀候选者。本次调查根据FBG振动-应变耦合方式的不同，将FBG型振动传感器分为三类，分别是粘贴式FBG型、FBG型轴向特性和FBG型横向特性。已经介绍和讨论了基于 FBG 的振动传感器的原理和设计。已经研究了基于 FBG 的振动传感器应用的最新进展。分析和讨论了基于 FBG 的振动传感技术的局限性和前景。已经研究了基于 FBG 的振动传感器应用的最新进展。分析和讨论了基于 FBG 的振动传感技术的局限性和前景。已经研究了基于 FBG 的振动传感器应用的最新进展。分析和讨论了基于 FBG 的振动传感技术的局限性和前景。