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Nondegenerate four-wave-mixing-based radio frequency up/downconversion using a parametric loop mirror.

Hao Huang1, Xiaoxia Wu, Jian Wang

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

Optics Letters
|December 6, 2011
PubMed
Summary

We developed a new method for reconfigurable radio frequency (RF) up/downconversion using a parametric optical loop mirror. This technique enables efficient conversion of baseband optical signals to RF-over-fiber signals across a wide frequency range without optical filters.

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Area of Science:

  • Optoelectronics
  • Optical Communications
  • Radio-over-Fiber Technology

Background:

  • Traditional radio frequency (RF) up/downconversion methods often require complex optical filtering to suppress optical carriers.
  • Achieving reconfigurable RF signal conversion across a broad frequency spectrum presents a significant challenge in optical communication systems.

Purpose of the Study:

  • To propose and demonstrate a novel reconfigurable RF up/downconversion method.
  • To eliminate the need for optical filters in carrier suppression during signal conversion.
  • To achieve wide-range frequency conversion for both single-channel and wavelength-division-multiplexing (WDM) signals.

Main Methods:

  • Utilizing a parametric optical loop mirror (POLM) for reconfigurable RF up/downconversion.
  • Demonstrating the conversion of baseband optical signals to carrier-suppressed RF-over-fiber (RoF) signals.
  • Employing the same experimental setup for both upconversion and downconversion functionalities.

Main Results:

  • Successful reconfigurable RF upconversion of baseband optical signals to up to 60 GHz.
  • Successful reconfigurable RF downconversion of signals from 40 GHz.
  • Demonstration of the method's effectiveness for both single-channel and WDM signals without optical carrier removal filters.

Conclusions:

  • The proposed parametric optical loop mirror method offers a filter-less approach for reconfigurable RF up/downconversion.
  • This technique provides a versatile solution for wide-range frequency conversion in optical communication systems.
  • The demonstrated capability for both upconversion and downconversion using a single setup highlights its practical potential.