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Related Concept Videos

IR Spectrometers01:25

IR Spectrometers

There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...

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Related Experiment Video

Updated: Jun 10, 2026

Writing Bragg Gratings in Multicore Fibers
08:48

Writing Bragg Gratings in Multicore Fibers

Published on: April 20, 2016

Multimode fiber-optic broad spectral band interferometer.

S Shaklan, F Reynaud, C Froehly

    Applied Optics
    |August 20, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Researchers developed new techniques to observe interference fringes in few-mode optical fibers, enabling mode-by-mode analysis without signal degradation. This advancement improves optical fiber communication and sensing capabilities.

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    Last Updated: Jun 10, 2026

    Writing Bragg Gratings in Multicore Fibers
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    Published on: April 20, 2016

    A Multimodal Wide-Field Fourier-Transform Raman Microscope
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    A Multimodal Wide-Field Fourier-Transform Raman Microscope

    Published on: December 30, 2025

    Area of Science:

    • Optical Physics
    • Fiber Optics Engineering

    Background:

    • Observing interference fringes in few-mode fibers is challenging due to modal superposition.
    • Existing methods often suffer from signal degradation and loss of modal information.

    Purpose of the Study:

    • To develop novel techniques for observing broad spectral band interference fringes on a mode-by-mode basis.
    • To overcome the detrimental effects of incoherent modal superimposition in long few-mode fiber lengths.

    Main Methods:

    • Utilized a cladding etching technique for spatial mode manipulation.
    • Employed elliptical core fibers to preserve mode orientation and polarization.

    Main Results:

    • Successfully observed broad spectral band interference fringes on a mode-by-mode basis.
    • Demonstrated the ability to use long lengths of few-mode fiber without signal degradation.

    Conclusions:

    • The developed techniques enable high-fidelity mode-by-mode analysis in few-mode fibers.
    • This breakthrough has implications for advanced optical fiber communication and sensing applications.