Miniature Multicore Optical Fiber Vibration Sensor

Abstract

We demonstrate a compact and versatile interferometric vibration sensor that operates in reflection mode. To build the device, a short segment of symmetric strongly coupled multicore optical fiber (MCF) is fusion spliced to a single-mode optical fiber (SMF). One end of the MCF segment is cleaved and placed in a cantilever position. Due to the SMF-MCF configuration, only two supermodes are excited in the MCF. Vibrations induce cyclic bending of the MCF cantilever which results in periodic oscillations of the reflected interference spectrum. In our device, the MCF itself is the inertial mass. The frequency range where our device is sensitive can be easily tailored from a few hertz to several kilohertz through the cantilever dimensions.

Publication Date

5-15-2017

Publication Title

Optics Letters

Volume

42

Issue

10

Number of Pages

2022-2025

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/OL.42.002022

Socpus ID

85019255702 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85019255702

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