Ultrasensitive Vector Bending Sensor Based On Multicore Optical Fiber

Abstract

In this Letter, we demonstrate a compellingly simple directional bending sensor based on multicore optical fibers (MCF). The device operates in reflection mode and consists of a short segment of a three-core MCF that is fusion spliced at the distal end of a standard single mode optical fiber. The asymmetry of our MCF along with the high sensitivity of the supermodes of the MCF make the small bending on the MCF induce drastic changes in the supermodes, their excitation, and, consequently, on the reflected spectrum. Our MCF bending sensor was found to be highly sensitive (4094 pm/ deg ) to small bending angles. Moreover, it is capable of distinguishing multiple bending orientations.

Publication Date

2-15-2016

Publication Title

Optics Letters

Volume

41

Issue

4

Number of Pages

832-835

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/OL.41.000832

Socpus ID

84962077002 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84962077002

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