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A high-speed electro-optic triple-microring resonator modulator.

Jianxun Hong1,2, Feng Qiu1, Xiaoyang Cheng1

  • 1Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-koen, Kasuga-city, Fukuoka, 816-8580, Japan.

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|July 7, 2017
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Summary

A novel triple-microring modulator achieves high-speed, low bit error ratio (BER) operation. This photonic device enables efficient modulation for compact, low-energy integration.

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Area of Science:

  • Photonics
  • Optical Engineering
  • Integrated Optics

Background:

  • High-speed optical modulators are crucial for modern communication systems.
  • Existing modulators often face trade-offs between speed, energy efficiency, and bit error ratio (BER).

Purpose of the Study:

  • To propose and numerically investigate a novel coupling intensity modulator based on a triple-microring structure.
  • To achieve high-speed and low BER operation for photonic integration.

Main Methods:

  • Numerical investigation of a modulator comprising a dual-microring optical cavity and a gate-microring energy feedback path.
  • Analysis of sinusoidal modulation performance to determine bandwidth and modulation depth.
  • Simulation of pulse modulation to evaluate data rate, extinction ratio, and BER.

Main Results:

  • Theoretical verification of a 103 GHz bandwidth and 6.2 dB modulation depth at 2.0 Vpp.
  • Achieved a data rate of 160 Gbps with an extinction ratio of 16.84 dB and a BER of 1x10⁻⁸.
  • Demonstrated high energy storing efficiency and minimal intracavity energy decay due to the feedback path.

Conclusions:

  • The proposed triple-microring modulator offers a promising solution for high-speed, low BER optical modulation.
  • The design facilitates compact, low-energy photonic integration.
  • The device is suitable for advanced optical communication and computing applications.