Packaging of surface relief fiber Bragg Gratings for Harsh high temperature environments

被引：0

作者：

Young, Jonathan D. ^{[1
]}

Lowder, Tyson L. ^{[1
]}

Selfridge, Richard H. ^{[1
]}

Schultz, Stephen M. ^{[1
]}

机构：

[1] Brigham Young Univ, Dept Elect & Comp Engn, Provo, UT 84604 USA

来源：

SMART SENSOR PHENOMENA, TECHNOLOGY, NETWORKS, AND SYSTEMS 2008 | 2008年 / 6933卷

关键词：

fiber Bragg Gratings; high temperature; surface relief fiber Bragg Gratings; temperature sensing;

D O I：

10.1117/12.776378

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

The Surface Relief Fiber Bragg Grating (SR-FBG) is a viable alternative to the thermocouple for high temperature measurements in industry. To fabricate the SR-FBG we etch a grating into the flat surface of an elliptical-core D-fiber. At high temperature (1000 degrees C) the optical fiber becomes brittle. To overcome brittleness we thread the fiber through a preheated 0.020 inch diameter stainless steel tube. We insert the small tube into a larger one with a diameter of 0. 125 inches. The smaller tube rests on ceramic inserts to prevent contact with the large tube. The end of the D-fiber is fitted with a standard fiber optic connecter. With this packaging scheme we conduct a series of test at high temperature. The sensor is robust with no power loss or Bragg wavelength shift, even after heating for 24 consecutive hours.

引用

页数：6

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