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Updated: Jul 11, 2026

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Electro-optically tunable microring resonators on lithium niobate.

Tzyy-Jiann Wang1, Chia-Hong Chu, Che-Yung Lin

  • 1Institute of Electro-Optical Engineering, National Taipei University of Technology, Taiwan. f10939@ntut.edu.tw

Optics Letters
|October 3, 2007
PubMed
Summary

Electro-optical tuning of microring resonators on lithium niobate (LiNbO3) was achieved. This LiNbO3 device offers fast tuning speeds and stable performance for versatile photonic applications.

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Area of Science:

  • Photonics
  • Materials Science
  • Electrical Engineering

Background:

  • Microring resonators are crucial components in integrated photonics.
  • Lithium niobate (LiNbO3) is a well-established material for electro-optic applications.
  • Efficient electro-optical tuning of microring resonators is essential for advanced photonic circuits.

Purpose of the Study:

  • To demonstrate electro-optical tuning of a microring resonator fabricated on lithium niobate.
  • To investigate the performance characteristics of LiNbO3-based microring resonators.
  • To explore the potential of these devices for versatile photonic applications.

Main Methods:

  • Detailed design of microring resonator and coupler structures.
  • Fabrication using titanium diffusion on a wet-etched LiNbO3 ridge.

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  • Measurement of output characteristics at through and drop ports.
  • Analysis of applied voltage effects on resonant wavelength shift.

    • Main Results:

    • Successful electro-optical tuning of resonance wavelengths for TM and TE polarizations.
    • Demonstration of fast tuning speed, high material stability, and bidirectional wavelength shift.
    • Absence of heating interference during operation.
    • Achieved shift in resonant wavelength with applied voltage.

    Conclusions:

    • The fabricated LiNbO3 microring resonators enable efficient electro-optic tuning.
    • These devices are suitable for versatile photonic applications leveraging electro-optic and nonlinear effects.
    • The demonstrated performance characteristics pave the way for advanced integrated photonic devices.