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Updated: Jan 29, 2026

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Cavidad de Fabry-Pérot de Red de Fibra de Rejilla Cónica para Detección de Deformación con Sensibilidad Mejorada

Jinchen Zhang¹, Chao Wang², Rui Dai²

¹Guangxi Key Laboratory of Nuclear Physics and Technology, College of Physics Science and Technology, Guangxi Normal University, Guilin 541004, China.

Sensors (Basel, Switzerland)

|January 28, 2026

Abstract:

This paper presents a novel optical fiber axial strain sensor based on a Fabry-Perot interferometer (FPI) cavity incorporating Fiber Bragg Gratings (FBGs) and a tapered fiber, which has been experimentally validated. The sensor structure primarily consists of two identical FBGs with a bi-conical tapered fiber segment between them, achieving a strain sensitivity of 13.19 pm/με. This represents a 12-fold enhancement compared to conventional FBG-FPI, along with a resolution limit of 3.7 × 10^-4 με. The proposed sensor offers notable advantages including low fabrication cost, compact structure, and excellent linearity, demonstrating significant potential for high-precision axial strain measurement applications.

Palabras clave:

interferómetro de Fabry-Pérot red de fibra de rejilla sensor de fibra deformación

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