A miniature SMS-LPG bending sensor with high sensitivity based on multimode fiber embedded-LPG

Zhang, Shuo; Deng, Sifan; Wang, Zemin; Sun, Changzheng; Chen, Xudong; Ma, Yiwei; Zhao, Lei; Lu, Chao; Geng, Tao; Yang, Wenlei; Yuan, Libo

doi:10.1016/j.sna.2019.05.024

Cited by 11 publications

(3 citation statements)

References 18 publications

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“…where α SAP is averaged TEC of the power rod material calculated according to the materials 2 and 3 volume fraction, α mat.4 is TEC of material 4. The B values obtained in our study were comparable with the analytical values calculated by Formula (7). The birefringence values for the thermal cycle VI section for fiber with the thicknesses PC standard ratio are presented in Table 3.…”

Section: About Birefringencesupporting

confidence: 86%

“…for decorative and landscape lighting [2,3]. Instrumentation based on fiber optic sensors (FOS) is one of the most developing research areas: with applications for temperature [4], displacement [5], pressure [6], bending [7], air quality [8], chemical and biological presence substances [9], angular velocities [10] and other physical parameters. Their universal characteristics contribute to the following: small dimensions and weight, resistance to electromagnetic interference, low power consumption, resistance to aggressive environments, and the ability to work in a wide temperature range.…”

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confidence: 99%

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Analysis of the Polymer Two-Layer Protective Coating Impact on Panda-Type Optical Fiber under Bending

2022

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The article discusses the effects of thermal-force on the Panda-type optical fiber. The studies used a wide temperature range. The research used two thermal cycles with exposures to temperatures of 23, 60 and −60 °C. The field of residual stresses in the fiber formed during the drawing process was determined and applied. Panda was considered taking into account a two-layer viscoelastic polymer coating under conditions of tension winding on an aluminum coil in the framework of a contact problem. The paper investigated three variants of coil radius to analyze the effect of bending on fiber behavior. The effect of the coating thickness ratio on the system deformation and optical characteristics was analyzed. Qualitative and quantitative patterns of the effect of temperature, bending, thickness of individual polymer coating layers and relaxation transitions of their materials on the Panda optical fiber deformation and optical characteristics were established. Assessment of approaches to the calculation of optical characteristics (values of the refractive indices and fiber birefringence) are given in the framework of the study. The patterns of deformation and optical behavior of the Panda-type fiber with a protective coating, taking into account the nonlinear behavior of the system materials, were original results.

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Section: About Birefringencesupporting

confidence: 86%

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confidence: 99%

Analysis of the Polymer Two-Layer Protective Coating Impact on Panda-Type Optical Fiber under Bending

2022

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“…Vibration [108], curvature/bending [109,110], and strain [111,112] can also be sensed with an SMS structure. The first three parameters can modify the propagation constants of the interfering modes by different amounts due to the elasto-optic effect.…”

Section: 3c Modal Interferometers Designsmentioning

confidence: 99%

Mode-division and spatial-division optical fiber sensors

et al. 2022

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The aim of this paper is to provide a comprehensive review of mode-division and spatial-division optical fiber sensors, mainly encompassing interferometers and advanced fiber gratings. Compared with their single-mode counterparts, which have a very mature field with many highly successful commercial applications, multimodal configurations have developed more recently with advances in fiber device fabrication and novel mode control devices. Multimodal fiber sensors considerably widen the range of possible sensing modalities and provide opportunities for increased accuracy and performance in conventional fiber sensing applications. Recent progress in these areas is attested by sharp increases in the number of publications and a rise in technology readiness level. In this paper, we first review the fundamental operating principles of such multimodal optical fiber sensors. We then report on the theoretical formalism and simulation procedures that allow for the prediction of the spectral changes and sensing response of these sensors. Finally, we discuss some recent cutting-edge applications, mainly in the physical and (bio)chemical fields. This paper provides both a step-by-step guide relevant for non-specialists entering in the field and a comprehensive review of advanced techniques for more skilled practitioners.

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