Fiber-based quartz enhanced photoacoustic spectroscopy (QEPAS) is a method for trace gas sensing with excellent properties such as high sensitivity and strong applicability. It has received extensive attention and become particularly attractive in recent years. Therefore, this invited paper analyzed and summarized the principle of its sensing as well as its technical characteristics. The latest research results, combed with the application mechanism and application fields of different types of QEPAS system, were introduced. Finally, its development trend was forecasted.

中文翻译：

---

基于光纤的石英增强光声光谱用于痕量气体传感的进展

光纤基石英增强光声光谱（QEPAS）是一种具有灵敏度高、适用性强等优良特性的痕量气体传感方法。近年来，它受到了广泛的关注，并变得特别有吸引力。为此，特邀论文对其传感原理及其技术特点进行了分析总结。结合不同类型QEPAS系统的应用机理和应用领域，介绍了最新研究成果。最后对其发展趋势进行了预测。