Distributed Few-Mode Fiber Point Sensor

Lars Grüner-Nielsen; Mads H. Vandborg; Karsten Rottwitt; Mikael Lassen

doi:10.1109/CLEO/Europe-EQEC65582.2025.11110467

Distributed Few-Mode Fiber Point Sensor

Lars Grüner-Nielsen, Mads H. Vandborg, Karsten Rottwitt, Mikael Lassen

DFM - Dansk Fundamental Metrologi A/S

Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

Abstract

Point sensors, where a short piece of few-mode fiber (FMF) is spliced between single-mode fibers (SMF), work by monitoring the phase shift in the interference between two guided modes of the FMF, induced by e.g. changes in the temperature or the strain applied to the FMF. So far, such sensors have only been demonstrated as single-point sensors. Here, the method of [3], introduced to distinguish the interference between the fundamental mode and two higher-order modes, is applied to separate the interferences generated in FMF sections of different lengths.

Original language	English
Publication date	2025
DOIs	https://doi.org/10.1109/CLEO/Europe-EQEC65582.2025.11110467
Publication status	Published - 2025
Event	2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference - ICM – International Congress Center of Messe München, Munich, Germany Duration: 23 Jun 2025 → 27 Jun 2025 https://www.cleoeurope.org/

Conference

Conference	2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference
Location	ICM – International Congress Center of Messe München
Country/Territory	Germany
City	Munich
Period	23/06/2025 → 27/06/2025
Internet address	https://www.cleoeurope.org/

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title = "Distributed Few-Mode Fiber Point Sensor",

abstract = "Point sensors, where a short piece of few-mode fiber (FMF) is spliced between single-mode fibers (SMF), work by monitoring the phase shift in the interference between two guided modes of the FMF, induced by e.g. changes in the temperature or the strain applied to the FMF. So far, such sensors have only been demonstrated as single-point sensors. Here, the method of [3], introduced to distinguish the interference between the fundamental mode and two higher-order modes, is applied to separate the interferences generated in FMF sections of different lengths.",

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AU - Grüner-Nielsen, Lars

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AB - Point sensors, where a short piece of few-mode fiber (FMF) is spliced between single-mode fibers (SMF), work by monitoring the phase shift in the interference between two guided modes of the FMF, induced by e.g. changes in the temperature or the strain applied to the FMF. So far, such sensors have only been demonstrated as single-point sensors. Here, the method of [3], introduced to distinguish the interference between the fundamental mode and two higher-order modes, is applied to separate the interferences generated in FMF sections of different lengths.

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T2 - 2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference

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Distributed Few-Mode Fiber Point Sensor

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Conference

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