Optical Signal Processing

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According to Fraunhofer HHI [1]:

Optical signal processing refers to a broad range of techniques that operate in optical data signals. In particular all-optical signal processing uses nonlinear effects in optical media for optical data manipulation. The advantages are higher bandwidth, faster processing speed, no need for opto-electrical / electro-optical conversion. 

Nonlinear devices

Examples of functions that can be performed with nonlinear devices are [1]:

  1. Wavelength conversion
  2. Optical multiplexing and demultiplexing
  3. Multicasting
  4. Equalization
  5. Correlation
  6. Fast / discrete Fourier transform
  7. Digital-to-analog (D/A), and analog-to-digital (A/D) conversions
  8. Regeneration
  9. Optical logic gates (AND, OR, XOR, etc.)
  10. All-optical tunable delays


  1. Schmidt-Langhorst, Carsten, (n.d.). Optical Signal Processing. Retrieved September 7, 2019 from URL https://www.hhi.fraunhofer.de/en/departments/pn/research-groups/submarine-and-core-systems/optical-signal-processing.html


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