High performance Raman distributed high-temperature sensing system based on sapphire fiber

被引：0

作者：

Jie, Ruimin ^{[1
]}

Liu, Xu ^{[1
]}

Liu, Bo ^{[1
]}

Rao, Yunjiang ^{[1
]}

机构：

[1] Zhejiang Lab, Res Ctr Opt Fiber Sensing, Hangzhou, Peoples R China

来源：

ADVANCED FIBER LASER CONFERENCE, AFL2022 | 2022年 / 12595卷

关键词：

Optical fiber sensing; Distributed temperature sensing; Single crystal fiber; Raman scattering; High temperature measurement;

D O I：

10.1117/12.2669081

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Distributed high-temperature sensing (DHTS) system with single crystal fiber (SCF) has been proved to be an efficient method for ultra-high temperature sensing where traditional silica fiber can't survive. The performance enhancement of the system has been a long desire to better support various applications. In this paper, the upgraded DHTS system used 532 nm laser to avoid thermo-noise at ultra-high temperature and detected the backscattered Raman Stokes and Anti-Stokes signals in a sapphire fiber. The measurands indicated a 7 cm spatial resolution and a 2.2. temperature resolution with only 30 s average time. The system is expected to be applicable for important applications such as aircraft engine and energy monitoring with further improvements.

引用

页数：7

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