Compact refractive index sensing using a Mach-Zehnder interferometer based on an air gap inside of a fiber

G Salceda-Delgado; A Martinez-Rios; T E Porras-Culebro; I Torres-Gomez; G Anzueto-Sanchez

doi:10.1364/FIO.2023.FD4.1

Frontiers in Optics + Laser Science 2023 (FiO, LS)
Technical Digest Series (Optica Publishing Group, 2023),
paper FD4.1
•https://doi.org/10.1364/FIO.2023.FD4.1

Compact refractive index sensing using a Mach-Zehnder interferometer based on an air gap inside of a fiber

G Salceda-Delgado, A Martinez-Rios, T E Porras-Culebro, I Torres-Gomez, and G Anzueto-Sanchez

Frontiers in Optics 2023

Tacoma, Washington United States
9–12 October 2023
ISBN: 978-1-957171-29-6

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G. Salceda-Delgado, A. Martinez-Rios, T. E. Porras-Culebro, I. Torres-Gomez, and G. Anzueto-Sanchez, "Compact refractive index sensing using a Mach-Zehnder interferometer based on an air gap inside of a fiber," in Frontiers in Optics + Laser Science 2023 (FiO, LS), Technical Digest Series (Optica Publishing Group, 2023), paper FD4.1.

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Abstract

A refractive index optical fiber sensor is presented. It consists of an air gap inside the fiber, structuring a Mach-Zehnder interferometer with high-order propagating modes sensitive to the surrounding. Sensitivities around 226.8 nm/RIU were obtained.

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