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Related Concept Videos

Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...

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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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Published on: March 20, 2017

Multiple-scattering suppression: cross correlation with tilted single-mode fibers.

U Nobbmann, S W Jones, B J Ackerson

    Applied Optics
    |February 12, 2008
    PubMed
    Summary

    Slightly tilting two single-mode fibers suppresses multiple light scattering. This technique effectively isolates single scattering signals for accurate particle size analysis, demonstrating its practical application in optical measurements.

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    Last Updated: Jul 7, 2026

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    A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

    Published on: September 5, 2019

    Area of Science:

    • Optics and Photonics
    • Light Scattering
    • Particle Characterization

    Background:

    • Multiple light scattering complicates optical measurements, obscuring single scattering signals.
    • Accurate particle sizing and characterization rely on isolating single scattering events.

    Purpose of the Study:

    • To investigate a novel method for suppressing multiple light scattering.
    • To demonstrate the effectiveness of fiber tilting in enhancing single scattering detection.
    • To validate the technique for particle size and property measurements.

    Main Methods:

    • Utilized two single-mode fibers to view the same sample volume.
    • Varied the tilt angle between the fibers to control multiple scattering contributions.
    • Analyzed the cross-correlation function of the collected signals.
    • Performed experiments using polystyrene spheres at a 90-degree scattering angle.

    Main Results:

    • Slightly tilting the fibers effectively suppressed multiple light scattering.
    • The cross-correlation function's single scattering contribution varied with tilt angle.
    • Measured particle size, intercept, and second cumulant were consistent across tilt angles.
    • Both parallel and perpendicular polarization components showed multiple scattering, but only the parallel component contained single scattering.

    Conclusions:

    • Fiber tilting is a practical and effective technique for suppressing multiple light scattering.
    • This method enables reliable single scattering detection for accurate particle characterization.
    • The findings have implications for advanced optical sensing and material analysis.