SBIR Phase I: Cavity Ringdown Evanescent Wave Fiber Optic Sensor

该SBIR一期项目建议开发和演示一种技术，使用制备的光纤段进行化学选择性超灵敏吸收测量，可用于监测偏远地区的痕量化学浓度。这种新方法的灵敏度是目前使用传统光纤探头所能实现的灵敏度的数百倍，并且可以通过增加传感光纤的长度来任意提高。本提案详细介绍了我们在演示该技术时将采用的技术方法，并描述了我们将执行的测试，以显示原理证明。该方案技术的商业应用将用于地下水和储存设施中痕量化学物质的监测和测绘，以及化学品储存和生产工厂周围的化学品泄漏监测。第一阶段的工作将展示一种新方法的潜力，这种方法可以远程测量痕量物种的光纤光谱浓度，与远程现场操作相兼容。该技术将用于科学和商业应用的快速和敏感分析。

9860853 This SBIR Phase I project proposes to develop and demonstrate a technology to make chemically selective ultra-sensitive absorption measurements using prepared fiber optic segments which can be used to monitor trace chemical concentrations in remote locations. The sensitivity of this new approach is hundreds of times greater than that which can currently be realized using conventional fiber optic probes, and can be arbitrarily increased by increasing the length of the sensing fiber. This proposal details the technical approach we will take in demonstrating the technique and describes the tests we will perform to show proof-of-principle. The commercial applications of the program technology will be in the monitoring and mapping of trace chemical species in ground water and storage facilities, as well as in chemical leak monitoring around chemical storage and production plants. This Phase I work will demonstrate the potential of a new method of making remote fiber optic spectral concentration measurements of trace species, which is compatible with remote field operation. The technology will be developed for rapid and sensitive analysis in scientific and commercial applications.