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Wavelength-tunable silicon microring modulator.

Po Dong1, Roshanak Shafiiha, Shirong Liao

  • 1Kotura Inc., 2630 Corporate Place, Monterey Park, CA, 91754, USA. pdong@kotura.com

Optics Express
|July 1, 2010
PubMed
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We developed a compact silicon microring modulator that is wavelength-tunable, fast, and energy-efficient. This device achieves 12.5 Gbps speed and 6 dB extinction ratio, addressing bandwidth limitations in optical interconnects.

Area of Science:

  • Photonics
  • Optical Communications
  • Materials Science

Background:

  • Silicon microring resonators are crucial for optical interconnects but suffer from narrow bandwidth.
  • Existing modulators often lack wavelength tunability and require high driving voltages.
  • Increasing data bandwidth is essential for modern computing and communication systems.

Purpose of the Study:

  • To develop a wavelength-tunable silicon microring modulator.
  • To achieve high-speed modulation with low power consumption.
  • To enhance data bandwidth in optical interconnect systems.

Main Methods:

  • Fabrication of a compact silicon microring modulator with a 5-micrometer radius.
  • High-speed modulation measurements at 12.5 Gbps with a 3 V driving voltage.

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  • Integration of a microheater for wavelength tunability with efficiency measurements.

    • Main Results:

    • Demonstrated a high-speed modulator with 12.5 Gbps capability and a 6 dB extinction ratio.
    • Achieved wavelength tunability using an integrated microheater with an efficiency of 2.4 mW/nm.
    • The device operates at low power, suitable for energy-efficient optical systems.

    Conclusions:

    • The developed silicon microring modulator offers a promising solution for increasing data bandwidth in optical interconnects.
    • Wavelength tunability addresses the narrow bandwidth limitations of silicon microcavity modulators.
    • The compact, high-speed, and low-power design facilitates practical implementation in advanced optical systems.