In this paper, we present a thorough experimental and theoretical analysis of field statistics for light propagating in a multimode fiber with a noncircular cross section. This optical fiber serves as...
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A parametric dispersion model that describes mode mixing in multimode fiber enables calibration of the fiber''s multispectral transmission matrix with significantly fewer measurements than existing
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The correlation methods of signal processing allow constructed fiber optic interferometer using only laser, multimode optical fiber, and digital camera. Even the small deformation of multimode fiber
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Here, we propose, to our knowledge, a novel method for achieving fast and high-resolution speckle imaging via optical coherence control. Employing highly coherent input light, high
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Optical fibers serve as a bridge to transmit starlight into the spectrograph in fiber spectral surveys. Due to the interference between multiple
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The fiber-based spectrometer consists of a multimode fiber and a monochrome CCD camera that images the speckle pattern at the end of the fiber. The speckle pattern, created by interference
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When a laser beam transmits through a multi-mode fiber, speckles show in the output beam. In this work, we study the laser speckle under static and dynamic scrambling by the histogram and line
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To illustrate speckle averaging using independent spatial modes, we recorded low-coherence interferograms of a scattering metallic surface using single mode and multimode source
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We examine how these algorithms perform when analyzing speckle patterns from a polymer optical fiber exposed to variations in both refractive index and pressure.
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Fiber speckle patterns contain information of the spatial state of the optical fiber, which can be used in metrological applications. In multimode optical fibers, the speckle phenomenon can be
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Abstract and Figures We report significant speckle reduction in a laser illumination system using a vibrating multimode optical fiber bundle.
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We present a fiber-sensing technique that detects the mean-absolute speckle-intensity variation between the updated and the reference speckle pattern for determining the environmental
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Abstract: We theoretically investigate a twist-related speckle variation in a graded-index multimode fiber. The simulation results show that by increasing the offset splicing distance between a single-mode
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In summary, we presented a multimode fiber based dynamic strain sensor that uses the evolution of the backscattered speckle pattern to extract a linear strain response.
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The study presents a detailed analysis of light propagation in chaotic multimode fibers. Experimental findings support the ''random Gaussian'' hypothesis for intensity pattern statistics. Approximately 1500
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The signal intensity, demodulated from the speckles, is different when using multimode fibers with different diameters. At the same time, the sensing effect of different fibers depends on the
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In this work, we numerically simulated various speckle patterns generated from different MMF modes, and analyzed their spatial correlation properties.
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Specifically, we propose a speckle imaging model that consists of a lightweight encoder-decoder architecture and a weighted loss function, enabling high-fidelity image transmission through
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Integrated random-speckle spectrometry can be realized using disordered media [25 – 27], multimode waveguides [28 – 30], and
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A standard multimode optical fiber can be used as a general purpose spectrometer after calibrating the wavelength dependent speckle patterns
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The measurement of a multimode fiber core is proposed using a speckle autocorrelation algorithm to obtain the minimum speckle diameter
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This article presents a comparative study on the performance of three widely used speckle demodulation algorithms, average intensity algorithm (AIA), normalized inner product coefficient
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Citations (8) References (45) Abstract Excitation of a multimode fiber with a focused spatially coherent light of finite bandwidth results in a partially coherent light at the output of the fiber.
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More robustness against fiber bend is demonstrated in compressive MMF imaging using mean speckle patterns captured at multiple potential bending configurations beforehand, rather than
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Fiber bend is a major challenge of multimode fiber (MMF) imaging. More robustness against fiber bend is demonstrated in compressive MMF imaging using mean speckle patterns
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In this paper, we present a thorough experimental and theoretical analysis of field statistics for light propagating in a multimode fiber with a
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In this paper, we present a thorough experimental and theoretical analysis of field statistics for light propagating in a multimode fiber with a noncircular cross section. This optical fiber
Get Quote