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Updated: Jun 13, 2026

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

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Published on: November 7, 2016

Image velocity sensing using an optical fiber array.

A Hayashi, Y Kitagawa

|April 15, 2010

Summary

This summary is machine-generated.

This study introduces a noncontact optical fiber velocity sensor. The sensor uses an optical fiber array as a spatial filter, proving effective for measuring object velocity, even with significant sideways motion.

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Area of Science:

Optoelectronics
Optical Sensing
Photonics

Background:

Noncontact velocity measurement is crucial in various industrial and scientific applications.
Traditional methods can be limited by physical contact requirements or environmental factors.

Purpose of the Study:

To describe a novel noncontact velocity sensor utilizing an optical fiber array.
To investigate the sensor's performance characteristics and validate its effectiveness.

Main Methods:

The sensor employs linearly arrayed optical fiber end faces as a spatial filter for velocity sensing.
Performance was analyzed by varying the number of fibers, fiber interval, and object spectrum.
Experimental validation and selectivity calculations were performed.

Main Results:

The optical fiber array effectively functions as a spatial filter for velocity detection.
Sensor characteristics were systematically investigated and understood.
Effectiveness was confirmed through calculations and experiments.

Conclusions:

The developed noncontact optical fiber sensor is a viable tool for velocity measurement.
An imaging system with a cylindrical lens enhances the measurement of objects with significant sideways motion.