標題: | Method of utilizing a fiber for simultaneously measuring distributed strain and temperature |
作者: | Chi, Sien Chiang, Po-Wen Lee, Chien-Chung |
公開日期: | 5-六月-2003 |
摘要: | A method that utilizes a dispersion-shifted fiber having compound compositions with different temperature coefficients in core to simultaneously measure the distributed strain and temperature based on Brillouin frequency shift is disclosed. The present method includes the steps of obtaining mean two peak frequencies in a multi-peak Brillouin spectrum of the dispersion-shifted fiber, determining a temperature change according to the formula of a Brillouin frequency shift of the peak relating to strain and temperature conditions of the fiber, and determining a strain change through the formula. In a 3682-m sensing length of Large-Effective-Area NZ-DS fiber, a temperature resolution of 5° C., a strain resolution of 60 με and a spatial resolution of 2 m are achieve simultaneously. |
官方說明文件#: | G01N025/00 G01K011/32 |
URI: | http://hdl.handle.net/11536/105794 |
專利國: | USA |
專利號碼: | 20030103549 |
顯示於類別: | 專利資料 |