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Related Concept Videos

Interference and Diffraction02:18

Interference and Diffraction

Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
X-ray Crystallography02:18

X-ray Crystallography

The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...

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Related Experiment Video

Updated: Jun 8, 2026

Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light
09:19

Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light

Published on: July 29, 2013

Photoinduced diffraction in polymer waveguides.

J H Andrews, K D Singer

    Applied Optics
    |September 22, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Researchers measured photoinduced diffraction in polymer waveguides using Disperse Red 1 dye. They observed optical damage and anisotropic scattering, impacting diffraction efficiency measurements.

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    Last Updated: Jun 8, 2026

    Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light
    09:19

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    Published on: July 29, 2013

    Interfacial Molecular-level Structures of Polymers and Biomacromolecules Revealed via Sum Frequency Generation Vibrational Spectroscopy
    09:43

    Interfacial Molecular-level Structures of Polymers and Biomacromolecules Revealed via Sum Frequency Generation Vibrational Spectroscopy

    Published on: August 13, 2019

    Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
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    Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

    Published on: September 26, 2016

    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • Photochromic gratings in polymer waveguides can lead to optical damage.
    • Understanding diffraction effects is crucial for waveguide device performance.

    Purpose of the Study:

    • To investigate photoinduced diffraction in prism-coupled slab polymer waveguides.
    • To analyze optical damage and anisotropic scattering phenomena.
    • To assess the accuracy of diffraction efficiency measurements.

    Main Methods:

    • Fabrication of slab polymer waveguides with Disperse Red 1 dye.
    • Prism-coupling of light into waveguides.
    • Measurement of photoinduced diffraction and outcoupled light patterns.
    • Analysis of mode conversion and anisotropic scattering.

    Main Results:

    • Observed optical damage as diffractive mode conversion.
    • Attributed satellite beams to anisotropic scattering between TE and TM modes.
    • Found that modulation depth overstates actual diffraction efficiency.
    • Identified limitations in current measurement techniques.

    Conclusions:

    • Photoinduced diffraction and optical damage are significant in these waveguides.
    • Anisotropic scattering affects mode conversion and diffraction efficiency.
    • Improved techniques are needed for accurate characterization of waveguide properties.