Crystallization-induced refractive index modulation on sapphire-derived fiber for ultrahigh temperature sensing

被引：24

作者：

Liu, H. ^{[1
]}

Pang, F. ^{[1
]}

Hong, L. ^{[1
]}

Ma, Z. ^{[1
]}

Huang, L. ^{[1
]}

Wang, Z. ^{[1
]}

Wen, J. ^{[1
]}

Chen, Z. ^{[1
]}

Wang, T. ^{[1
]}

机构：

[1] Shanghai Univ, Shanghai Inst Adv Commun & Data Sci, Joint Int Res Lab Specialty Fiber Opt & Adv Commu, Key Lab Specialty Fiber Opt & Opt Access Networks, Shanghai 200444, Peoples R China

来源：

OPTICS EXPRESS | 2019年 / 27卷 / 05期

基金：

中国国家自然科学基金;

关键词：

FABRY-PEROT-INTERFEROMETER; BRAGG GRATINGS; FEMTOSECOND LASER; SENSOR; RADIATION; SYSTEM;

D O I：

10.1364/OE.27.006201

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have demonstrated crystallization-induced refractive index (RI) modulation on sapphire-derived fiber (SDF) showing superheat resistance and developed the SDF based Fabry-Perot interferometers (FPIs) for ultrahigh temperature sensing. The SDF is a special fiber with high concentration of alumina to silica in the fiber core region. Reheating and cooling the SDF by arc discharge generates mullite particles in the core region, which achieves RI modulation up to similar to 0.015. Such crystallized region in the SDF is explored as mirrors for FPI, showing a good linear response to temperature with sensitivity of similar to 13.2 pm/degrees C. Benefiting from superheat resistance of the crystallized SDF being mirrors, the developed SDF-FPI sensor is capable to withstand high temperature up to 1600 degrees C, which is the highest working temperature for amorphous fiber. Moreover, the SDF-FPI sensor exhibits 6-hour stability at 1200 degrees C. The crystallized SDF-FPIs with compactness, wide temperature working range, high sensitivity, and robustness show great potential application in harsh environment such as turbine engines, power plants, petrochemical, gas industry, etc. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：6201 / 6209

页数：9

共 35 条

[1] REVISED EQUILIBRIUM DIAGRAM FOR THE SYSTEM AL2O3-SIO2 [J].