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Polarization instability of Raman solitons ejected during supercontinuum generation
Optics Express
|February 3, 2016
Summary
We numerically investigated Raman soliton polarization dynamics during supercontinuum generation. Circularly birefringent fibers simplify these complex nonlinear polarization behaviors.
Area of Science:
- Nonlinear optics
- Photonics
- Fiber optics
Background:
- Supercontinuum generation is crucial for various optical applications.
- Understanding soliton polarization dynamics is key to controlling light propagation in nonlinear media.
- Photonics crystal fibers offer unique properties for light manipulation.
Purpose of the Study:
- To numerically investigate polarization instability and dynamics of Raman solitons during supercontinuum generation.
- To analyze the effect of linear and circular birefringence on soliton polarization evolution.
- To identify stable and unstable polarization states in ejected Raman solitons.
Main Methods:
- Numerical simulation using coupled vector generalized nonlinear Schrödinger equations.
- Analysis of polarization evolution on the Poincaré sphere.
- Investigation in both linear and circularly birefringent photonic crystal fibers.
Main Results:
- Polarization dynamics of ejected Raman solitons are influenced by nonlinear and linear rotations.
- A polarization separatrix and distinct stable slow and unstable fast eigen-polarizations were identified.
- Circularly birefringent fibers were found to simplify the nonlinear polarization dynamics.
Conclusions:
- The study elucidates complex polarization behaviors of Raman solitons in supercontinuum generation.
- Eigen-polarizations offer insights into the stability of ejected solitons.
- Circular birefringence presents a promising avenue for simplified control over nonlinear polarization dynamics.
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