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Tailoring CW supercontinuum generation in microstructured fibers with two-zero dispersion wavelengths
Optics Express
|June 24, 2009
Summary
We theoretically demonstrate broadband supercontinuum generation in photonic crystal fibers. This method utilizes specific pump wavelengths between two zero dispersion wavelengths for wide spectral broadening.
Area of Science:
- Nonlinear Optics
- Optical Fiber Technology
Background:
- Supercontinuum generation is crucial for various optical applications.
- Photonic crystal fibers (PCFs) offer unique dispersion properties for controlling light propagation.
Purpose of the Study:
- To theoretically investigate broadband supercontinuum generation in PCFs with two zero dispersion wavelengths.
- To explore the impact of pump wavelength placement on spectral broadening.
Main Methods:
- Theoretical study of nonlinear optical phenomena.
- Analysis of modulation instability and soliton dynamics.
- Modeling supercontinuum generation in PCFs under continuous-wave pumping.
Main Results:
- Achieved wide and uniform spectral broadening when the pump is between the two zero dispersion wavelengths.
- Identified modulation instability, blue- and red-shifted dispersive waves, and soliton self-frequency shift as key mechanisms.
- Demonstrated bandwidth control by tuning fiber dispersion, with a predicted 1050-1600 nm supercontinuum.
Conclusions:
- Broadband supercontinuum generation is controllable in PCFs with tailored dispersion.
- The proposed method enables efficient generation of wide-spectrum continuous-wave light.
