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Related Experiment Videos

Tunable power splitter based on an electro-optic multimode interference device.

Roshan Thapliya1, Takashi Kikuchi, Shigetoshi Nakamura

  • 1Corporate Research Group, Fuji Xerox Company, Ltd., Kanagawa, Japan. roshan.thapliya@fujixerox.co.jp

Applied Optics
|June 16, 2007
PubMed
Summary
This summary is machine-generated.

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Researchers developed tunable power splitters using electro-optic polymers. These devices offer dynamic control over power division, with a demonstrated 10 dB tuning range at a reduced 15 V driving voltage.

Area of Science:

  • Photonics and Optical Engineering
  • Materials Science

Background:

  • Multimode interference (MMI) devices are crucial for optical signal splitting.
  • Dynamic control of power-splitting ratios in MMI devices is highly desirable for advanced optical systems.
  • Electro-optic (EO) polymers offer a promising route for active modulation of optical properties.

Purpose of the Study:

  • To demonstrate a 1x2 electro-optic MMI (EO-MMI) power splitter with dynamically tunable power-splitting ratios.
  • To investigate methods for reducing the driving voltage required for tuning the EO-MMI devices.
  • To achieve a significant tuning range for optical power division.

Main Methods:

  • Fabrication and characterization of 1x2 EO-MMI devices utilizing EO polymers.
  • Application of electrical driving voltages to modulate the refractive index within the MMI region.

Related Experiment Videos

  • Analysis of power-splitting ratios as a function of applied voltage and device design.
  • Exploration of multi-beat generation techniques to lower operational voltage requirements.

    • Main Results:

    • Demonstrated a 1x2 EO-MMI with a 6 dB tuning range at approximately 54 V, matching theoretical predictions.
    • Introduced a method using multiple beats to achieve a 10 dB tuning range at a reduced driving voltage of 15 V.
    • Achieved this performance with EO polymers exhibiting a r(33) coefficient of 15 pm/V at a wavelength of 1.55 micrometers.

    Conclusions:

    • Electro-optic MMI devices offer a viable platform for dynamically tunable optical power splitting.
    • The proposed multi-beat generation method significantly reduces the driving voltage, enhancing practical applicability.
    • These tunable EO-MMI devices hold potential for applications in optical switching, signal processing, and telecommunications.