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In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
Published on: May 27, 2013
Highly efficient Brillouin slow and fast light using As(2)Se(3) chalcogenide fiber
Optics Express
|June 12, 2009
Summary
We achieved record-breaking efficiency for slow and fast light generation using stimulated Brillouin scattering in chalcogenide fiber. This breakthrough enables significant optical time delays with low pump power.
Area of Science:
- Photonics and Optical Engineering
- Materials Science
Background:
- Stimulated Brillouin scattering (SBS) is a nonlinear optical process.
- Chalcogenide glasses, like As(2)Se(3), offer unique nonlinear optical properties.
- Controlling light propagation speed is crucial for optical signal processing.
Purpose of the Study:
- To demonstrate efficient generation of slow and fast light using SBS.
- To investigate the performance of As(2)Se(3) chalcogenide fiber for this application.
- To achieve record-high Brillouin gain and optical time delay.
Main Methods:
- Utilizing a 5-m single-mode As(2)Se(3) chalcogenide fiber.
- Employing stimulated Brillouin scattering (SBS) with a low-power pump.
- Measuring Brillouin gain and optical time delay characteristics.
Main Results:
- Achieved a record Brillouin gain of 43 dB.
- Required only 60-mW of pump power for this gain.
- Demonstrated an optical time delay of 37 ns for a 50-ns Gaussian pulse.
Conclusions:
- As(2)Se(3) chalcogenide fiber is highly efficient for generating slow and fast light via SBS.
- The achieved efficiency surpasses previous reports.
- This work paves the way for advanced optical delay lines and signal processing.
