Trade-off relation between strain dynamic range and spatial resolution in slope-assisted Brillouin optical correlation-domain reflectometry

Heeyoung Lee, Kohei Noda, Yosuke Mizuno, Kentaro Nakamura

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Slope-assisted Brillouin optical correlation-domain reflectometry (SA-BOCDR) is one of the high-speed distributed strain sensing techniques, but its strain dynamic range has been limited to approximately 0.15%, which is far from being sufficient for some practical applications. In this paper, we clarify that, unlike widely used time-domain techniques, SA-BOCDR has a trade-off relation between the strain dynamic range and the spatial resolution. This trade-off originates from the unique bell-shaped noise floor inherently involved in the Brillouin gain spectrum observed with correlation-domain techniques. We experimentally show that, at the cost of three times lowered spatial resolution, the strain dynamic range of >0.6% can be achieved.

本文言語English
論文番号075204
ジャーナルMeasurement Science and Technology
30
7
DOI
出版ステータスPublished - 2019 6 4
外部発表はい

ASJC Scopus subject areas

  • 器械工学
  • 工学(その他)
  • 応用数学

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