Combined Long-Period Fiber Grating and Microcavity In-Line Mach–Zehnder Interferometer for Refractive Index Measurements with Limited Cross-Sensitivity

Combined Long-Period Fiber Grating and Microcavity In-Line Mach–Zehnder Interferometer for Refractive Index Measurements with Limited Cross-Sensitivity

This work discusses sensing properties of a long-period grating (LPG) and microcavity in-line Mach–Zehnder interferometer (µIMZI) when both are induced in the same single-mode optical fiber. LPGs were either etched or nanocoated with aluminum oxide (Al<sub>2</sub>O<sub>3</sub>...

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Bibliographic Details
Main Authors: Monika Janik, Marcin Koba, Krystian Król, Predrag Mikulic, Wojtek J. Bock, Mateusz Śmietana
Format: Article
Language:English
Published: MDPI AG 2020-04-01
Series:Sensors
Subjects:
Mach–Zehnder interferometer (MZI)
long-period grating (LPG)
optical fiber sensors
refractive index sensing
femtosecond laser micromachining
thin films
Online Access:https://www.mdpi.com/1424-8220/20/8/2431

Internet

https://www.mdpi.com/1424-8220/20/8/2431

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