Analysis of misalignment, twist, and bend in few-mode fibers using spatially and spectrally resolved imaging

Wang, Chongxi; Pan, Chen; Xu, Jinsheng; Yang, Zhiqun; Zhao, Jian; Huang, Zhanhua

doi:10.1016/j.yofte.2020.102205

Cited by 5 publications

(2 citation statements)

References 16 publications

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“…In the future, based on this system, the influence of external physical factors on the mode of the FMF can be continued to explore. For example, the effect of bending [26,27] and twisting [28] on modes of the FMF, the impact of polarization and rotation on asymmetric modes [29], etc. In addition, some critical factors on the modes of FMFs can be tested in this experiment setup, such as the offset distance, temperature [30], perturbation.…”

Section: Discussionmentioning

confidence: 99%

Few-Mode Fiber Characterization System Based on the Spatially and Spectrally Imaging Technique

Tan

Chen

2022

Sensors

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With the widespread use of few-mode fibers, mode characteristics testing becomes essential. In this paper, current few-mode fiber testing techniques are discussed, and the S2 imaging technique is chosen and demonstrated to be capable of few-mode fiber characterization in principle. As a result, the few-mode fiber characterization system with the S2 imaging technique is built and used to obtain accurate mode dispersion of two-mode fibers (a commonly used few-mode fiber) of different lengths. Then, various filters are applied to extract the fundamental and high-order modes to acquire mode coupling components (discrete and distributed mode coupling). The proposed system spectrally characterizes the few-mode fiber by resolving the interference information from the superimposed optical field spatially and has a simple structure and easy operation, which will provide parameter guidance for FMF designing and the FMF sensing experiment optimizing.

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Section: Discussionmentioning

confidence: 99%

Few-Mode Fiber Characterization System Based on the Spatially and Spectrally Imaging Technique

Tan

Chen

2022

Sensors

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“…These applications include short-and long-haul communications, active fiber devices for use in fiber lasers, supercontinuum sources, and other nonlinear optical systems and biomedical devices. In particular, it was realized that fibers with cores able to support "a few" modes had sufficient mode stability to sustain independent channels of information over long distances without intermodal mixing (thereby leading to "mode division multiplexing") [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. In the same category, MCFs that carry information in independently guiding cores within an optical fiber also have many interesting new sensing applications .…”

Section: Fiber Modes In Multimode and Multicore Systemsmentioning

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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Torsion and bending sensing based on the specklegrams from a coupled few-mode multi-core fiber

Yuan,

Liu,

et al. 2024

Optics Communications

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Analysis of misalignment, twist, and bend in few-mode fibers using spatially and spectrally resolved imaging

Cited by 5 publications

References 16 publications

Few-Mode Fiber Characterization System Based on the Spatially and Spectrally Imaging Technique

Few-Mode Fiber Characterization System Based on the Spatially and Spectrally Imaging Technique

Mode-division and spatial-division optical fiber sensors

Torsion and bending sensing based on the specklegrams from a coupled few-mode multi-core fiber

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