Rearch on glass ceramics with negative CTE used as FBG substrate

Kang Lijun
Wang YX(王耀祥)

Publication date

January 2003

Publisher

SPIE

Abstract

The β-eucryptite glass ceramics with negative coefficient of thermal expansion (CTE) is studied in this paper. And the coefficient of thermal expansion, the crystal phases and the structure are researched by XRD and SEM. The β-eucryptite glass ceramics with negative CTE is produced by glass crystallization method, and whose negative CTE of -103.7×10 <sup><font size="2">-7</font></sup>/°C (from room temperature to 200°C) is obtained, which can be used as fiber Bragg grating (FBG) substrate. The substrate shrinks with a rise in temperature which compensates for the Bragg wavelength shift with temperature. It can be confirmed that β-eucryptite glass ceramics have suitable thermal expansion characteristics for FBG

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Rearch on glass ceramics with negative CTE used as FBG substrate

Abstract

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Rearch on glass ceramics with negative CTE used as FBG substrate

Abstract

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