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IR Spectroscopy: Hooke's Law Approximation of Molecular Vibration

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Updated: Feb 20, 2026

Implementation of a Reference Interferometer for Nanodetection

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

Interferometer based on strongly coupled multi-core optical fiber for accurate vibration sensing.

Joel Villatoro, Enrique Antonio-Lopez, Joseba Zubia

|October 19, 2017

Summary

We developed a novel optical fiber sensor for precise vibration monitoring. This multi-core fiber (MCF) interferometer offers high sensitivity and is unaffected by temperature changes, ideal for industrial applications.

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Last Updated: Feb 20, 2026

Implementation of a Reference Interferometer for Nanodetection

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Published on: April 26, 2014

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

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Published on: September 30, 2019

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

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Published on: January 7, 2019

Area of Science:

Optoelectronics
Fiber Optics Sensing
Interferometry

Background:

Traditional vibration sensors can be affected by environmental factors like temperature.
Optical fiber sensors offer potential for robust and sensitive measurements.

Purpose of the Study:

To develop a simple, highly sensitive vibration sensor using a multi-core optical fiber (MCF) interferometer.
To demonstrate the sensor's performance in detecting periodic movements and its immunity to temperature fluctuations.

Main Methods:

Constructed a fiber optic interferometer using a standard single-mode fiber (SMF) and a specially designed MCF.
Configured the MCF interferometer within a mechanical setup to translate periodic movements into localized pressure.
Utilized the interference of two super-modes within the MCF for sensing.

Main Results:

Achieved high force sensitivity of -4225 pm/N.
Demonstrated periodic interference pattern shifts corresponding to applied vibrations.
Confirmed that measurements are unaffected by temperature changes.

Conclusions:

The developed SMF-MCF-SMF interferometer is a promising technology for accurate, temperature-independent vibration monitoring.
The sensor's design allows for broad frequency range detection.
This optical fiber sensor offers a robust alternative for vibration sensing in various environments.