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Updated: Jul 9, 2026
15:04
Rejection of Fluorescence Background in Resonance and Spontaneous Raman Microspectroscopy
Published on: May 18, 2011
Experimental demonstration of a Raman effectbased optical transistor.
Optics Letters
|December 18, 2007
Summary
We demonstrated optical pulse switching and amplification using simultaneous Raman and Kerr effects in fiber-loop mirrors. Highly germania-doped fibers showed stimulated Raman scattering dominating the loop
Area of Science:
- Optics and Photonics
- Nonlinear Fiber Optics
Background:
- Fiber-loop mirrors are key components in optical signal processing.
- Understanding nonlinear effects like Raman and Kerr scattering is crucial for device performance.
Purpose of the Study:
- To demonstrate optical pulse switching and amplification.
- To investigate the roles of Raman and Kerr effects in fiber-loop mirrors.
- To analyze the impact of germania doping concentration on these effects.
Main Methods:
- Utilized a fiber-loop mirror configuration.
- Employed highly germania-doped fibers (up to 20 mol.% GeO2).
- Investigated simultaneous Raman and Kerr nonlinear effects.
Main Results:
- Stimulated Raman scattering was identified as the dominant effect in highly germania-doped fibers.
- Achieved optical switching of a 100-picosecond (ps) signal pulse.
- Demonstrated an amplification factor of 10.
Conclusions:
- Simultaneous Raman and Kerr effects enable effective optical pulse switching and amplification.
- Germania doping concentration significantly influences the dominant nonlinear mechanism.
- The findings align with theoretical predictions for stimulated Raman scattering in such systems.
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