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Related Experiment Videos

Adiabatic mode multiplexer for evanescent-coupling-insensitive optical switching.

E Narevicius1, R Narevich, Y Berlatzky

  • 1OpTun Inc., 3350 Scott Boulevard, Santa Clara, California 95054, USA. enarevicius@yahoo.com

Optics Letters
|January 5, 2006
PubMed
Summary
This summary is machine-generated.

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A new adiabatic mode multiplexer creates a 2x2 optical switch. This device shows low loss and minimal crosstalk, operating efficiently in the Landau-Zener regime.

Area of Science:

  • Photonics and Optical Engineering
  • Integrated Optics
  • Waveguide Technology

Background:

  • Optical switches are crucial for telecommunications and data processing.
  • Existing devices often suffer from phase-dependent operation and insertion losses.
  • Mode multiplexing offers a promising avenue for enhanced optical switching capabilities.

Purpose of the Study:

  • To introduce a novel adiabatic mode multiplexer for 2x2 optical switching.
  • To demonstrate phase-independent operation and low loss characteristics.
  • To experimentally validate the device's performance in silica-on-silicon technology.

Main Methods:

  • Design and fabrication of an adiabatic mode multiplexer using silica-on-silicon.
  • Characterization of insertion loss across C+L optical bands.

Related Experiment Videos

  • Measurement of modal crosstalk for all polarization states.
  • Direct measurement of nonadiabatic transition probability to confirm Landau-Zener regime operation.

    • Main Results:

    • Achieved a 2x2 optical switch with phase-independent operation.
    • Demonstrated negligible insertion loss over C+L bands.
    • Exhibited modal crosstalk below -40 dB for all polarizations.
    • Confirmed operation within the Landau-Zener regime via transition probability measurements.

    Conclusions:

    • The novel adiabatic mode multiplexer enables robust, low-loss 2x2 optical switching.
    • The device's performance is validated experimentally in silica-on-silicon.
    • The findings highlight the potential of adiabatic mode multiplexing for advanced photonic integrated circuits.