公开(公告)号：US20040218847A1

公开(公告)日：2004-11-04

申请号：US10805081

申请日：2004-03-19

申请人： Luna Innovations, Inc.

发明人： Joshua P. Averett ,  Jennifer L. Elster ,  Mark E. Jones ,  Charles D. Pennington ,  Roger L. VanTassell

IPC分类号： G02B006/00

CPC分类号： G01D5/35383 ,  G01D5/35303 ,  G01N33/54373

摘要： A fiber-optic method for making simultaneous multiple parameter measurements employs an optical fiber sensor having at least one long period grating disposed therein. An excitation is created in the optical fiber sensor wherein a plurality of evanescent field sensing depths result. At least two long period grating signatures are created. When the optical fiber sensor is exposed to at least one material, changes in the material are identified by simultaneously measuring and comparing shifts in each long period grating signature; correlating the shifts to changes in the material; and solving a series of equations that compare changes in the coupling wavelength for a specific loss band. A reactive coating may be applied to the optical fiber sensor proximate to the long period grating such that changes in the reactive coating as it reacts with the material may also be monitored.

摘要翻译： 用于进行同时多参数测量的光纤方法使用具有设置在其中的至少一个长周期光栅的光纤传感器。 在光纤传感器中产生激发，其中产生多个消逝场感测深度。 创建至少两个长周期光栅签名。 当光纤传感器暴露于至少一种材料时，通过同时测量和比较每个长周期光栅标记中的位移来识别材料的变化; 将转移与材料变化相关联; 并求解一系列方程，比较特定损耗带的耦合波长变化。 可以将反应性涂层施加到靠近长周期光栅的光纤传感器，使得当反应性涂层与材料反应时的变化也可以被监测。