Photonic Sensors

, Volume 8, Issue 1, pp 7–12 | Cite as

Interference-based optical measurement of fluidic flow in a hollow-core fiber

  • Min-Hwan Lee
  • Sung-Hyun Kim
  • Eun-Sun Kim
  • In-Kag Hwang
Open Access
Regular
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Abstract

In this study, we present speed and displacement measurements of micro-fluid in a hollow-core optical fiber, where an optical interference signal is created by two guided beams reflected at a fixed facet and a moving fluid end. By counting the number of intensity oscillations of the signal, the movement of the fluid end is successfully traced with high accuracy. Furthermore, we could detect the change in curvature diameters of the fluid end depending on the flow direction by monitoring the visibility of the interference signal.

Keywords

Fiber optic sensing micro channel fluidic flow fluidic velocimetry optical fiber interferometry 

Notes

Acknowledgment

This study was financially supported by Chonnam National University (2016).

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Copyright information

© The Author(s) 2017

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • Min-Hwan Lee
    • 1
  • Sung-Hyun Kim
    • 1
  • Eun-Sun Kim
    • 1
  • In-Kag Hwang
    • 1
  1. 1.Department of PhysicsChonnam National UniversityGwangjuRepublic of Korea

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