Cantilever-based biaxial FBG inclinometer with low cross-axis sensitivity

Document Type

Article

Publication Date

1-1-2024

Abstract

This work proposes and demonstrates a biaxial sensing inclinometer based on two FBGs surfacemounted on two separate thin cantilevers with a diminishable cross-axis sensitivity. The measured sensitivities for the inclination angles in the x-z plane and y-z plane are 34.87 and 33.49 pm/deg, respectively. To enhance the protection of the delicate FBGs and minimize axis-to-axis cross-sensitivity, the carbon-steel cantilevers are strategically arranged in a perpendicular configuration, resulting in an impressively low cross-sensitivity value of just 0.9275%. This alignment not only offers mechanical shielding but also ensures optimal performance and accuracy for the FBGs.

Keywords

inclinometer, cantilever, cross-sensitivity, fiber Bragg grating.

Publication Title

Optica Applicata

Divisions

PHYSICS,photonics

Funders

Technology Development Fund (TED1),Ministry of Energy, Science, Technology, Environment and Climate Change (MESTECC), Malaysia (TDF06221580); (MOSTI003 -2023TED1),UM Matching Grant (MG029-2022)

Volume

54

Issue

2

Publisher

Wroclaw University of Science and Technology

Publisher Location

WYBRZEZE WYSPIANSKIEGO 27, WROCLAW, 50-370, POLAND

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