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Quasi-light Storage for Optical Data Packets
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Reconfigurable optical quadrature amplitude modulation converter/encoder using a tunable complex coefficient optical

Salman Khaleghi1, Mohammad Reza Chitgarha, Omer F Yilmaz

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

Optics Letters
|August 14, 2013
PubMed
Summary
This summary is machine-generated.

We demonstrated a reconfigurable optical system that converts lower-order Quadrature Amplitude Modulation (QAM) signals to higher-order QAM signals. This adaptable technology supports tunable baud rates for advanced optical communications.

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Area of Science:

  • Optical communications
  • Signal processing
  • Nonlinear optics

Background:

  • Quadrature Amplitude Modulation (QAM) is crucial for high-capacity optical networks.
  • Efficient and flexible signal conversion is needed to enhance data transmission capabilities.
  • Current methods for optical signal manipulation face limitations in reconfigurability and performance.

Purpose of the Study:

  • To experimentally demonstrate a novel reconfigurable optical converter/encoder for QAM signals.
  • To achieve flexible conversion between different QAM signal orders.
  • To enable tunable baud rates within the optical system.

Main Methods:

  • Utilizing nonlinear wavelength multicasting for signal processing.
  • Implementing conversion-dispersion delays for signal manipulation.
  • Employing simultaneous nonlinear multiplexing and sampling techniques.

Main Results:

  • Demonstrated successful reconfigurable conversion from lower-order QAM to higher-order QAM (e.g., 64-QAM).
  • Achieved baud rate tunability, supporting both 31 Gbaud and 20 Gbaud operations.
  • Validated the system's capability for dynamic signal format adaptation.

Conclusions:

  • The developed optical system offers a flexible and reconfigurable solution for QAM signal processing.
  • This technology has the potential to improve the adaptability and capacity of future optical networks.
  • The demonstrated techniques pave the way for advanced optical transceivers with enhanced functionalities.