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Controllable optical demultiplexing using continuously tunable optical parametric delay at 160 Gbit/s with <0.1 ps

Xiaoxia Wu1, Scott Nuccio, Omer F Yilmaz

  • 1Department of Electrical Engineering-Systems, University of Southern California, Los Angeles, California 90089, USA. xiaoxia@usc.edu

Optics Letters
|December 18, 2009
PubMed
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Researchers demonstrated tunable optical parametric delay for demultiplexing 160 Gbit/s signals to 40 Gbit/s. This method achieved a 15.2 ns delay with sub-picosecond resolution using acousto-optic modulators.

Area of Science:

  • Optical Engineering
  • Telecommunications
  • Signal Processing

Background:

  • High-speed optical signal processing is crucial for modern communication networks.
  • Demultiplexing high bit-rate signals efficiently remains a significant challenge.
  • Existing methods often lack the required precision and tunability.

Purpose of the Study:

  • To demonstrate a novel method for demultiplexing high-speed optical signals.
  • To achieve continuously tunable optical parametric delay for precise signal manipulation.
  • To enable the conversion of a 160 Gbit/s signal to 40 Gbit/s.

Main Methods:

  • Utilizing continuously tunable optical parametric delay based on conversion/dispersion.
  • Implementing cascaded acousto-optic modulators after the pump laser for fine delay tuning.

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  • Experimentally verifying the demultiplexing of a 160 Gbit/s signal.

    • Main Results:

    • A 15.2 ns delay was successfully demonstrated for a 160 Gbit/s optical signal.
    • The achieved delay resolution was less than 0.1 picoseconds.
    • Efficient demultiplexing from 160 Gbit/s to 40 Gbit/s was achieved.

    Conclusions:

    • The proposed optical parametric delay technique offers high precision and tunability.
    • This method provides a viable solution for high-speed optical signal demultiplexing.
    • The experimental demonstration validates the effectiveness of acousto-optic modulators for fine delay control.