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Optically controlled tunable dispersion compensators based on pumped fiber gratings.

Xuewen Shu1, Kate Sugden, Ian Bennion

  • 1Photonics Research Group, Aston University, Birmingham B4 7ET, UK. x.shu@aston.ac.uk

Optics Letters
|August 3, 2011
PubMed
Summary

Researchers developed tunable optical dispersion compensators using fiber Bragg gratings in Er/Yb codoped fiber. This technology allows for adjustable dispersion in optical systems, enhancing signal integrity.

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Area of Science:

  • Photonics and Optical Engineering
  • Fiber Optic Communications

Background:

  • Optical dispersion management is crucial for high-speed fiber optic systems.
  • Fiber Bragg gratings (FBGs) offer a compact and efficient method for dispersion compensation.

Purpose of the Study:

  • To demonstrate optically tunable dispersion compensators.
  • To investigate tunable dispersion in both chirped and uniform-period fiber Bragg gratings.

Main Methods:

  • Fabrication of fiber Bragg gratings in Er/Yb codoped fiber.
  • Optical pumping techniques to induce tunable dispersion.
  • Experimental characterization of dispersion tuning range.

Main Results:

  • Successful demonstration of optically tunable dispersion compensation.

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  • Tunable dispersion achieved for chirped gratings from 900 to 1990 ps/nm.
  • Tunable dispersion achieved for uniform-period gratings from -600 to -950 ps/nm.

    • Conclusions:

    • Optically tunable dispersion compensators based on Er/Yb codoped FBGs are feasible.
    • The proposed method offers a flexible approach to dispersion management in optical networks.