STTR Phase I: Distributed Micro-Optical Sensor Technology for Temperature, Pressure and Strain Measurements

STTR 第一阶段：用于温度、压力和应变测量的分布式微光学传感器技术

• 批准号: 0539067
• 负责人: Michael Kozhevnikov
• 金额: $ 10万
• 依托单位: Lenterra Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-01-01 至 2006-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0539067&HistoricalAwards=false
• 关键词: STTR; Phase; Distributed; Micro; Optical

This Small Business Technology Transfer (STTR) Phase I project will demonstrate a micro-optical distributed sensor technology for temperature, pressure and strain measurements. The measurement principle is based on the detection of optical mode shifts of dielectric micro-beads that serve as sensors. The sensors are weakly coupled to one or more optical fibers and are excited by a tunable laser light. The technology exploits the morphology dependent shifts in resonant frequencies that are commonly referred to as the whispering gallery modes (WGM). A change in a physical condition surrounding the micro-bead "sensor", such as temperature, pressure or force, will cause a change in the size, shape or the dielectric constant of the sensor thereby causing shifts in WGM. With typical quality factors of 106-108, these shifts can be detected with resolutions and dynamic ranges that are beyond those realized by the existing mechanical sensors. The project will advance understanding of fundamental processes associated with formation of optical modes in weakly coupled micro-resonators in various environments. The technology can have a significant impact on process control in manufacturing industries as well as the medical field. Further, the successful completion of this effort will lay the groundwork for the development of a much broader range of WGM-based distributed sensors that can include species concentration detection with potential applications in homeland security and other areas.

该小型企业技术转让 (STTR) 第一阶段项目将展示用于温度、压力和应变测量的微光学分布式传感器技术。测量原理基于对用作传感器的介电微珠的光学模式偏移的检测。传感器与一根或多根光纤弱耦合，并由可调谐激光激发。该技术利用了共振频率形态相关的变化，通常称为回音壁模式 (WGM)。微珠“传感器”周围的物理条件（例如温度、压力或力）的变化将引起传感器的尺寸、形状或介电常数的变化，从而引起WGM的变化。典型的品质因数为 106-108，这些变化可以通过超出现有机械传感器所能实现的分辨率和动态范围来检测。该项目将增进对各种环境中弱耦合微谐振器中光学模式形成相关基本过程的理解。该技术可以对制造业和医疗领域的过程控制产生重大影响。此外，这项工作的成功完成将为开发更广泛的基于 WGM 的分布式传感器奠定基础，这些传感器可以包括物种浓度检测，并在国土安全和其他领域具有潜在的应用。