MilliKelvin resolution in cryogenic temperature distributed fibre sensing based on coherent Rayleigh scattering

被引：16

作者：

Lu, Xin ^{[1
]}

Soto, Marcelo A. ^{[1
]}

Thevenaz, Luc ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol, Inst Elect Engn, SCI STI LT, CH-1015 Lausanne, Switzerland

来源：

23RD INTERNATIONAL CONFERENCE ON OPTICAL FIBRE SENSORS | 2014年 / 9157卷

关键词：

Optical fibre sensors; distributed fibre sensing; Rayleigh scattering; cryogenic sensing; OPTICAL-FIBER; OTDR;

D O I：

10.1117/12.2059659

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The response of a distributed temperature sensor based on coherent Rayleigh scattering is experimentally studied in the temperature range from 77 K up to 300 K, using fibres with standard and ORMOCER coating. A precise and absolute frequency scan is performed to obtain the best temperature resolution that turns out to be in the mK range. Experimental results point out that heating and cooling processes, at cryogenic temperatures, exhibit different temperature sensitivities when standard single-mode fibres are used; however, specially coated fibres exhibit better repeatability.

引用

页数：4

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