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Software-defined microwave photonic filter with high reconfigurable resolution.

Wei Wei1,2, Lilin Yi1, Yves Jaouën2

  • 1State Key Lab of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, 200240 Shanghai, China.

Scientific Reports
|October 21, 2016
PubMed
Summary
This summary is machine-generated.

We developed a novel microwave photonic filter (MPF) using stimulated Brillouin scattering (SBS) in optical fiber. This MPF offers precise software control over shape, bandwidth, and frequency for advanced radio frequency signal processing.

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Area of Science:

  • Photonics
  • Optical Signal Processing
  • Radio Frequency Systems

Background:

  • Microwave photonic filters (MPFs) offer flexibility in radio frequency (RF) systems.
  • Existing MPFs struggle with precise control over filter shape, limiting applications.
  • Current MPF technology is primarily used for basic signal selection.

Purpose of the Study:

  • To present a polarization-insensitive, single-passband, arbitrary-shaped MPF.
  • To achieve precise software control over filter shape, bandwidth, and central frequency.
  • To demonstrate enhanced MPF functionality for advanced microwave signal processing.

Main Methods:

  • Utilized stimulated Brillouin scattering (SBS) in optical fiber.
  • Developed a single-passband arbitrary-shaped MPF design.
  • Implemented software control for filter parameter definition with MHz resolution.

Main Results:

  • Achieved a polarization-insensitive MPF with ~GHz bandwidth.
  • Demonstrated precise software control over filter shape, bandwidth, and central frequency.
  • Successfully performed nanosecond pulse shaping using the developed MPF.

Conclusions:

  • The novel MPF offers unprecedented multi-dimensional flexibility for microwave signal processing.
  • Precise filter control enhances MPF functionality beyond simple signal selection.
  • The technology proves superior and practical for applications like nanosecond pulse shaping.