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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.
Mass Analyzers: Common Types01:19

Mass Analyzers: Common Types

The quadrupole mass analyzer consists of four cylindrical metal rods arranged in a diamond carrying a DC voltage and a radio-frequency AC voltage. The motion of ions through the quadrupole depends on the field strength, causing only ions of a certain m/z to resonate successfully and strike the detector at a given field strength. Though the transmission rate for these analyzers is high, the exact elemental composition of the sample is not determined because of low resolution; however, they are...

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Related Experiment Video

Updated: Jul 9, 2026

Writing Bragg Gratings in Multicore Fibers
08:48

Writing Bragg Gratings in Multicore Fibers

Published on: April 20, 2016

Multiple beam interference in a quadrupolar glass fiber.

M Hentschel, M Vojta

    Optics Letters
    |December 7, 2007
    PubMed
    Summary
    This summary is machine-generated.

    Multiple beam interference in laser-illuminated quadrupolar glass fibers was studied. Numerical simulations revealed polygonal cavity modes contributing to observed far-field interference patterns, matching experimental filter data.

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    Last Updated: Jul 9, 2026

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    Published on: April 20, 2016

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    Area of Science:

    • Optics and Photonics
    • Materials Science
    • Wave Phenomena

    Background:

    • Periodic filter characteristics have been observed in oval-shaped microcavities.
    • Understanding light-matter interactions in microstructured optical fibers is crucial for device development.

    Purpose of the Study:

    • To investigate the interference of multiple beams in the far field of a laser-illuminated quadrupolar glass fiber.
    • To correlate numerical findings with experimental observations of filter characteristics.

    Main Methods:

    • Numerical ray-tracing simulations were employed to model light propagation.
    • The interference-relevant length-difference spectrum was extracted from simulations.
    • Simulated data was compared with experimental filter results.

    Main Results:

    • The study identified contributions from different polygonal cavity modes.
    • Refractive output coupling in high-curvature regions was shown to be significant.
    • Simulated interference spectra closely matched experimental data.

    Conclusions:

    • Polygonal cavity modes are key contributors to far-field interference in quadrupolar glass fibers.
    • Ray-tracing simulations effectively predict interference phenomena in such optical systems.
    • This work provides insight into the physics of microcavity-based optical filters.