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112-Gb/s monolithic PDM-QPSK modulator in silicon.

Po Dong1, Chongjin Xie, Long Chen

  • 1Bell Labs, Alcatel-Lucent, 791 Holmdel Road, Holmdel, New Jersey 07733, USA. po.dong@alcatel-lucent.com

Optics Express
|December 25, 2012
PubMed
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We developed a silicon photonic integrated circuit (PIC) for dual-polarization quadrature phase-shift keying (QPSK) modulation. This device successfully demonstrated 112-Gb/s polarization-division-multiplexed QPSK modulation.

Area of Science:

  • Photonics
  • Optical Communications
  • Integrated Optics

Background:

  • High-speed optical modulators are crucial for modern data transmission.
  • Silicon photonics offers a scalable platform for integrated optical devices.

Purpose of the Study:

  • To present a monolithic dual-polarization quadrature phase-shift keying (QPSK) modulator.
  • To demonstrate its performance in high-speed data transmission.

Main Methods:

  • Design and fabrication of a silicon photonic integrated circuit (PIC).
  • Integration of four high-speed silicon modulators, a polarization rotator, and a polarization beam combiner.
  • Experimental demonstration of 112-Gb/s polarization-division-multiplexed (PDM) QPSK modulation.

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Last Updated: May 15, 2026

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
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Published on: June 3, 2015

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Main Results:

  • Successful demonstration of a monolithic dual-polarization QPSK modulator.
  • Achieved a data rate of 112 Gb/s using PDM-QPSK modulation.
  • Validated the functionality of the integrated silicon photonic components.

Conclusions:

  • The developed silicon PIC is a viable solution for high-speed optical modulation.
  • Monolithic integration of advanced modulation formats is feasible on silicon photonics platforms.
  • This technology can advance the capacity of optical communication systems.