scholarly journals 1.2.4 - First-order sapphire fiber Bragg gratings for high temperature sensing

2016 ◽  
Author(s):  
T. Elsmann ◽  
T. Habisreuther ◽  
A. Graf ◽  
M. Rothhardt ◽  
M. Schmidt ◽  
...  
Keyword(s):  
High Temperature ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Temperature Sensing ◽  
First Order ◽  
Sapphire Fiber

High Temperature Sensing with Fiber Bragg Gratings in Sapphire Fibers

2014 ◽  
Author(s):  
Tino Elsmann ◽  
Tobias Habisreuther ◽  
Manfred Rothhardt ◽  
Hartmut Bartelt
Keyword(s):  
High Temperature ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Temperature Sensing ◽  
Sapphire Fibers

Faser-Bragg-Gitter für Hochtemperaturanwendungen (Fiber Bragg Gratings for High Temperature Sensing Applications)

2004 ◽  
Vol 71 (10-2004) ◽  
pp. 555-562 ◽  
Author(s):  
Christoph Chojetzki ◽  
Torsten Klaiberg ◽  
Jens Ommer ◽  
Manfred Rothhardt ◽  
Daniel Betz
Keyword(s):  
High Temperature ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Temperature Sensing ◽  
Sensing Applications

High-temperature sensing using surface relief fiber Bragg gratings

2005 ◽  
Vol 17 (9) ◽  
pp. 1926-1928 ◽  
Author(s):  
T.L. Lowder ◽  
K.H. Smith ◽  
B.L. Ipson ◽  
A.R. Hawkins ◽  
R.H. Selfridge ◽  
...  
Keyword(s):  
High Temperature ◽  
Surface Relief ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Temperature Sensing

Multi-layer, offset-coupled sapphire fiber Bragg gratings for high-temperature measurements

2019 ◽  
Vol 44 (17) ◽  
pp. 4211 ◽  
Author(s):  
Xizhen Xu ◽  
Jun He ◽  
Changrui Liao ◽  
Yiping Wang
Keyword(s):  
High Temperature ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Temperature Measurements ◽  
Sapphire Fiber ◽  
High Temperature Measurements

Advanced fabrication and calibration of high-temperature sensor elements based on sapphire fiber Bragg gratings

2014 ◽  
Author(s):  
Tino Elsmann ◽  
Tobias Habisreuther ◽  
Manfred Rothhardt ◽  
Reinhardt Willsch ◽  
Hartmut Bartelt
Keyword(s):  
High Temperature ◽  
Temperature Sensor ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
High Temperature Sensor ◽  
Sapphire Fiber

scholarly journals Sapphire-Derived Fiber Bragg Gratings for High Temperature Sensing

Crystals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 946
Author(s):  
Qi Guo ◽  
Zhixu Jia ◽  
Xuepeng Pan ◽  
Shanren Liu ◽  
Zhennan Tian ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Temperature ◽  
Spectral Characteristics ◽  
Fiber Bragg Gratings ◽  
Single Mode ◽  
Bragg Gratings ◽  
Temperature Sensing ◽  
Direct Writing ◽  
Core Diameter ◽  
Application Range

In this paper, a sapphire-derived fiber (SDF) with a core diameter of 10 μm and a cladding diameter of 125 μm is fabricated by the melt-in-tube method, and fiber Bragg gratings (FBGs) with reflectivity over 80% are prepared by the femtosecond laser point-by-point direct writing method. By analyzing the refractive index distribution and reflection spectral characteristics of the SDF, it can be seen that the SDF is a graded refractive index few-mode fiber. In order to study the element composition of the SDF core, the end-face element distribution of the SDF is analyzed, which indicates that element diffusion occurred between the core and the cladding materials. The temperature and stress of the SDF gratings are measured and the highest temperature is tested to 1000 °C. The temperature and strain sensitivities are 15.64 pm/°C and 1.33 pm/με, respectively, which are higher than the temperature sensitivity of the quartz single-mode fiber. As a kind of special fiber, the SDF expands the application range of sapphire fiber, and has important applications in the fields of high-temperature sensing and high-power lasers.

Multipoint high temperature sensing with regenerated fiber Bragg gratings

2018 ◽  
Author(s):  
Johannes Roths ◽  
Carl G. Seydel ◽  
Andreas Heinrich ◽  
Thomas Bosselmann ◽  
Franz Dutz ◽  
...  
Keyword(s):  
High Temperature ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Temperature Sensing

High-temperature multiparameter sensor based on sapphire fiber Bragg gratings

2010 ◽  
Vol 35 (16) ◽  
pp. 2810 ◽  
Author(s):  
Stephen J. Mihailov ◽  
Dan Grobnic ◽  
Christopher W. Smelser
Keyword(s):  
High Temperature ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Sapphire Fiber
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