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Coupled Mach-Zehnder interferometer memory element.

Martin T Hill1, H J S Dorren, X J M Leijtens

  • 1Inter-University Research Institute on Communication Technology Basic Research and Applications, Department of Electrical Engineering, EH 12.33, Eindhoven University of Technology, RO. Box 513, 5600 MB Eindhoven, The Netherlands. m.t.hill@tue.nl

Optics Letters
|August 4, 2005
PubMed
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Researchers developed a novel optical memory element using two Mach-Zehnder interferometers on a monolithic InP/InGaAsP photonic integrated circuit. This device, functioning as a set-reset flip-flop, demonstrates a switching time of approximately 200 picoseconds for optical signal processing.

Area of Science:

  • Photonics
  • Optical Engineering
  • Semiconductor Devices

Background:

  • Optical signal processing is critical for high-speed communication.
  • Integrated photonic circuits offer miniaturization and enhanced functionality.
  • Developing efficient optical memory elements is key for advanced optical computing.

Purpose of the Study:

  • To design and fabricate a monolithic photonic integrated circuit (PIC) for optical signal processing.
  • To create an optical memory element, specifically a set-reset flip-flop, using active Mach-Zehnder interferometers.
  • To characterize the switching performance of the integrated optical memory element.

Main Methods:

  • Integration of two active Mach-Zehnder interferometers within a monolithic InP/InGaAsP PIC.

Related Experiment Videos

  • Inclusion of active and passive optical components, such as electro-optic phase shifters.
  • Measurement and analysis of the device's switching time.

    • Main Results:

    • Successful integration of two active Mach-Zehnder interferometers on a monolithic InP/InGaAsP PIC.
    • Demonstration of a functional optical memory element (set-reset flip-flop).
    • Achieved an initial switching time of approximately 200 picoseconds.

    Conclusions:

    • The monolithic InP/InGaAsP PIC successfully integrates active Mach-Zehnder interferometers to form an optical memory element.
    • The developed set-reset flip-flop shows promising performance for optical signal processing applications.
    • The demonstrated switching speed indicates potential for high-speed optical data manipulation.