Fiber enhanced Raman spectroscopy (FERS) is a powerful multigas analysis technique. It combines the unmatched analytical prowess of Raman spectroscopy with the enhancement of small signals through the sophisticated use of hollow core optical fibers. Consequently, FERS is highly selective and very sensitive and as an optical technique label-free, non-invasive, and fast. Hollow core photonic crystal fibers and metal coated capillaries provide enhancement based on the confinement of guided light and gas. The technique allows the unambiguous identification and quantification of various gas mixture components, including hydrogen and nitrogen. The resulting versatility opens a broad range of applications for FERS. Several examples of medical gas sensing are reported. Furthermore, FERS gas sensing is applied in industrial and environmental process monitoring. Newly developed optical fibers and further advances in the field might increase sensitivity and stability.

纤维增强拉曼光谱（FERS）是一种强大的多气体分析技术。它结合了拉曼光谱技术无与伦比的分析能力，并通过中空光纤的精密使用增强了小信号。因此，作为一种光学技术，FERS具有高度的选择性和敏感性，且无标签，无创且快速。中空光子晶体光纤和金属涂覆的毛细管在引导光和气体的限制基础上提供了增强。该技术可以明确识别和量化各种混合气体成分，包括氢气和氮。由此产生的多功能性为FERS开辟了广泛的应用领域。报告了医用气体感测的几个示例。此外，FERS气体传感技术还应用于工业和环境过程监控。新开发的光纤以及该领域的进一步发展可能会提高灵敏度和稳定性。