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Related Experiment Video

Updated: Jun 22, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Ultrashort pulse propagation in grating-assisted codirectional couplers.

Mykola Kulishov, José Azaña

    Optics Express
    |May 29, 2009
    PubMed
    Summary

    Grating-assisted codirectional couplers (GACCs) can reshape ultrashort optical pulses into various temporal waveforms. These devices offer significantly shorter pulse durations compared to Bragg gratings.

    Area of Science:

    • Optics and Photonics
    • Nonlinear Optics
    • Wave Propagation

    Background:

    • Ultrashort optical pulses are crucial for high-speed information processing and advanced spectroscopy.
    • Grating-assisted codirectional couplers (GACCs) offer unique capabilities for manipulating light pulses.
    • Understanding pulse propagation in GACCs is essential for developing novel photonic devices.

    Purpose of the Study:

    • To theoretically investigate ultrashort pulse propagation through uniform grating-assisted codirectional couplers (GACCs) in the linear regime.
    • To analyze the temporal responses of GACCs to ultrashort optical pulses.
    • To evaluate the impact of grating parameters on pulse reshaping.

    Main Methods:

    • Numerical calculation of temporal responses of uniform GACCs.

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

    Related Experiment Videos

    Last Updated: Jun 22, 2026

    Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
    11:08

    Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

    Published on: November 30, 2012

    Writing Bragg Gratings in Multicore Fibers
    08:48

    Writing Bragg Gratings in Multicore Fibers

    Published on: April 20, 2016

  • Systematic variation of grating parameters such as length and coupling strength.
  • Analysis of pulse reshaping phenomena and output temporal shapes.

    • Main Results:

    • Significant pulse reshaping capabilities were observed, particularly for the "energy receptor" mode.
    • Achieved diverse temporal shapes including triangular pulses, square waveforms, and multiple equalized pulses.
    • Generated pulses with temporal scales significantly shorter (over an order of magnitude) than those from equivalent Bragg gratings.

    Conclusions:

    • GACCs provide a versatile platform for generating tailored ultrashort optical pulse shapes.
    • The ability to control pulse temporal characteristics offers potential for advanced optical signal processing.
    • GACCs demonstrate superior performance in generating short-duration pulses compared to Bragg gratings.