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Related Experiment Video

Updated: May 25, 2026

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
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All-optical flip-flop operation based on asymmetric active-multimode interferometer bi-stable laser diodes.

H Jiang1, Y Chaen, T Hagio

  • 1I-Eggs (Interdisciplinary Graduate School of Engineering Sciences), Kyushu University 6-1, Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan. jiangh7@asem.kyushu-u.ac.jp

Optics Express
|January 26, 2012
PubMed
Summary

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We developed fast, low-energy all-optical flip-flop devices using a high-mesa waveguide structure. These devices enable high-speed optical switching with minimal energy, advancing optical computing components.

Area of Science:

  • Photonics and Optical Engineering
  • Integrated Optics
  • Nonlinear Optics

Background:

  • All-optical flip-flops are crucial for high-speed optical signal processing and computing.
  • Existing devices often face challenges with energy consumption and switching speed.
  • Asymmetric active-multimode interferometers offer potential for improved performance.

Purpose of the Study:

  • To demonstrate a novel all-optical flip-flop device with enhanced speed and reduced energy consumption.
  • To investigate the performance of high-mesa waveguide structures in all-optical switching applications.
  • To optimize the design of asymmetric active-multimode interferometers for flip-flop operation.

Main Methods:

  • Fabrication of high-mesa waveguide structures for asymmetric active-multimode interferometers.

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Last Updated: May 25, 2026

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  • Experimental demonstration of all-optical flip-flop operation using short optical pulses.
  • Characterization of device performance, including switching speed, rise/fall times, and energy requirements.

    • Main Results:

    • Achieved high-speed all-optical flip-flop operation with 25 ps pulses.
    • Demonstrated fast output signal rise and fall times of 121 ps and 25 ps, respectively.
    • Required low set and reset pulse energies of 7.1 fJ and 3.4 fJ, respectively.

    Conclusions:

    • The implemented all-optical flip-flop devices show promising performance for future optical computing.
    • The high-mesa waveguide structure is effective in achieving fast and low-energy all-optical switching.
    • Further research can explore scaling and integration of these devices for complex optical circuits.