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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
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.
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.
- 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.
