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Related Experiment Video

Updated: Jun 22, 2026

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
09:39

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation

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Sampled Bragg gratings in chalcogenide (As(2)S(3)) rib-waveguides.

Neil J Baker, Ho W Lee, Ian C Littler

    Optics Express
    |June 17, 2009
    PubMed
    Summary

    Researchers created a strong sampled Bragg grating in a chalcogenide waveguide using a scanning Sagnac interferometer. This advancement offers performance comparable to silica fiber gratings for optical applications.

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    Area of Science:

    • Materials Science
    • Optical Engineering
    • Photonics

    Background:

    • Chalcogenide glasses, specifically As(2)S(3), are highly photosensitive materials.
    • Waveguide fabrication is crucial for integrated photonic devices.
    • Sampled Bragg gratings offer unique spectral properties for optical filtering.

    Purpose of the Study:

    • To fabricate a sampled Bragg grating in a chalcogenide rib-waveguide.
    • To characterize the spectral properties and induced refractive index change.
    • To compare the performance with existing technologies in silica optical fiber.

    Main Methods:

    • Writing a sampled Bragg grating using a scanning Sagnac interferometer.
    • Utilizing a highly photosensitive As(2)S(3) rib-waveguide.

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    Published on: August 19, 2016

    Writing Bragg Gratings in Multicore Fibers
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    Writing Bragg Gratings in Multicore Fibers

    Published on: April 20, 2016

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    Last Updated: Jun 22, 2026

    In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
    09:39

    In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation

    Published on: May 27, 2013

    Electrospray Deposition of Uniform Thickness Ge23Sb7S70 and As40S60 Chalcogenide Glass Films
    08:38

    Electrospray Deposition of Uniform Thickness Ge23Sb7S70 and As40S60 Chalcogenide Glass Films

    Published on: August 19, 2016

    Writing Bragg Gratings in Multicore Fibers
    08:48

    Writing Bragg Gratings in Multicore Fibers

    Published on: April 20, 2016

  • Employing numerical solutions of coupled mode equations to estimate refractive index change.

    • Main Results:

    • Achieved a sampled Bragg grating with evenly spaced rejection peaks over a 40 nm bandwidth.
    • Estimated an induced refractive index change exceeding 0.03.
    • Demonstrated grating strength and bandwidth comparable to state-of-the-art silica fiber gratings.

    Conclusions:

    • Successfully demonstrated the fabrication of a strong sampled Bragg grating in As(2)S(3) waveguides.
    • The results indicate significant potential for chalcogenide-based photonic devices.
    • This work advances the capabilities of sampled Bragg gratings for optical signal processing.