标题: | Method of utilizing a fiber for simultaneously measuring distributed strain and temperature |
作者: | Chi Sien Lee Chien-Chung Chiang Po-Wen |
公开日期: | 2-三月-2004 |
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.degree. C., a strain resolution of 60 .mu..epsilon. and a spatial resolution of 2 m are achieve simultaneously. |
官方说明文件#: | G01B011/16 G02B006/00 G01L001/24 G01N025/00 G01K011/00 G01K001/08 G01K001/14 G01K013/00 |
URI: | http://hdl.handle.net/11536/104843 |
专利国: | USA |
专利号码: | 06698919 |
显示于类别: | Patents |
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