Spatially resolved fibre cavity ring down spectroscopy

被引：7

作者：

Chen, Rongzhang ^{[1
]}

Peng, Zhaoqiang ^{[1
]}

Wang, Mohan ^{[1
]}

Yan, Aidong ^{[1
]}

Li, Shuo ^{[1
]}

Huang, Sheng ^{[1
]}

Li, Ming-Jun ^{[2
]}

Chen, Kevin P. ^{[1
]}

机构：

[1] Univ Pittsburgh, Dept Elect & Comp Engn, Pittsburgh, PA 15213 USA

[2] Corning Inc, One Riverfront Plaza, Corning, NY 14831 USA

来源：

SCIENTIFIC REPORTS | 2020年 / 10卷 / 01期

关键词：

DISTRIBUTED STRAIN; RAYLEIGH SCATTER; OPTICAL-FIBER; TEMPERATURE; AMPLIFIER; LOOP;

D O I：

10.1038/s41598-020-76721-y

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

This paper presents a fibre cavity ring down spectroscopy probed by Rayleigh scattering optical frequency domain reflectometry (OFDR), which provides spatial location of stimuli and improved signal to noise ratio for distributed sensing measurements. A section of optical fibre was integrated into an active fibre ring cavity with optical gain and interrogated by the OFDR system for 11 cycles with a single laser scan. Through the cavity ring down configuration, root-mean-squared (RMS) noise of distributed temperature and strain measurements was reduced to 6.9 mK and less than 0.1 mu epsilon, respectively for 1-cm spatially resolved measurements. Our work shows that the active fibre cavity configuration can be combined with distributed fibre sensing schemes to achieve both high spatial resolution and high sensitivity measurements.

引用

页数：7

共 25 条

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