Thermal and angle variation effects on a multimode interferometer operating in reflection mode by Fourier phase analysis

Tania Lozano-Hernández; Daniel Jauregui-Vazquez; Julian M. Estudillo-Ayala; Juan M. Sierra-Hernandez; Roberto Rojas-Laguna; Isai Espinoza-Torres

doi:10.1117/12.3028800

31 December 2024 Thermal and angle variation effects on a multimode interferometer operating in reflection mode by Fourier phase analysis

Tania Lozano-Hernández, Daniel Jauregui-Vazquez, Julian M. Estudillo-Ayala, Juan M. Sierra-Hernandez, Roberto Rojas-Laguna, Isai Espinoza-Torres

Author Affiliations +

Proceedings Volume 13487, Optics and Photonics International Congress 2024; 134870O (2024) https://doi.org/10.1117/12.3028800
Event: Optics and Photonics International Congress, 2024, Yokohama, Japan

Abstract

This study explores the modal sensitivity of a long reflective multimode optical fiber device for angle and temperature detection. Fabricated by splicing approximately 40 cm of multimode optical fiber (50/125), the device generates a random interference reflection spectrum, making wavelength sensitivity analysis impractical for angle detection estimation due to multiple modes. Nevertheless, Fourier phase analysis enables slight angle deflection detection. Three spectral Fourier components were examined, achieving a maximal sensitivity of 1.52 rad/° and a maximum angle variation of 3.4° in the multimode fiber. Thermal analysis indicates minimal temperature impact (0.0065 rad/°C). Strong sensitivity dependence on mode order was demonstrated, making this device appealing for applications requiring precise angle detection given its dimensions and signal analysis capabilities.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Tania Lozano-Hernández, Daniel Jauregui-Vazquez, Julian M. Estudillo-Ayala, Juan M. Sierra-Hernandez, Roberto Rojas-Laguna, and Isai Espinoza-Torres "Thermal and angle variation effects on a multimode interferometer operating in reflection mode by Fourier phase analysis", Proc. SPIE 13487, Optics and Photonics International Congress 2024, 134870O (31 December 2024); https://doi.org/10.1117/12.3028800

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