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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