Optical Bragg grating sensor fibers for ultra-high temperature applications

被引：3

作者：

Bartelt, Hartmut ^{[1
]}

Elsmann, Tino ^{[1
]}

Habisreuther, Tobias ^{[1
]}

Schuster, Kay ^{[1
]}

Rothhardt, Manfred ^{[1
]}

机构：

[1] Leibniz Inst Photon Technol, D-07745 Jena, Germany

来源：

FIFTH ASIA-PACIFIC OPTICAL SENSORS CONFERENCE | 2015年 / 9655卷

关键词：

Fiber Bragg gratings; optical sensor fibers; sapphire fibers; high temperature sensing; FEMTOSECOND LASER-RADIATION; SAPPHIRE;

D O I：

10.1117/12.2185623

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Sapphire based optical fibers provide an attractive basis for ultra-high temperature stable optical sensor elements. Fiber Bragg gratings can be inscribed in such fibers by means of femtosecond-laser pulses with a wavelength of 400 nm in combination with a two-beam phase mask interferometer. We have investigated crystalline optical fibers as well as structured sapphire-derived all glass optical fibers with aluminum content in the core of up to 50 mol%. The reflection properties, the index modulation and the attenuation effects will be discussed. Results concerning the temperature and strain sensitivity for use as sensor elements at high temperatures will be presented.

引用

页数：4

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