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Generation and Coherent Control of Pulsed Quantum Frequency Combs

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Continuum generation by dark solitons.

C Milián¹, D V Skryabin, A Ferrando

¹Department of Physics, Centre for Photonics and Photonic Materials, University of Bath, Bath, UK.

|October 14, 2009

Summary

This summary is machine-generated.

Dark soliton trains in optical fibers generate broad spectral distributions. Raman scattering and third-order dispersion influence the resulting resonant dispersive radiation, enhancing or suppressing it.

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Area of Science:

Nonlinear optics
Optical fiber communications
Quantum optics

Background:

Solitons are self-reinforcing solitary waves that maintain their shape while propagating.
Optical fibers support soliton propagation, enabling long-distance data transmission.
Group-velocity dispersion (GVD) and third-order dispersion (TOD) are crucial parameters in nonlinear fiber optics.

Purpose of the Study:

To investigate the generation of broad spectral distributions from dark soliton trains in optical fibers with zero GVD.
To analyze the role of resonant dispersive radiation in continuum generation.
To determine the influence of Raman scattering and TOD on this radiation.

Main Methods:

Numerical simulations of dark soliton propagation in optical fibers.
Analysis of spectral properties of generated radiation.
Theoretical modeling of soliton dynamics and dispersive wave emission.

Main Results:

Dark soliton trains in zero GVD fibers generate broad spectral continua.
The continuum is associated with resonant dispersive radiation emitted by solitons.
Raman scattering significantly affects the resonant radiation, either enhancing or suppressing it based on the sign of TOD.

Conclusions:

Dark solitons in zero GVD fibers are a viable source for broadband spectral generation.
Raman scattering and TOD are critical factors controlling the spectral characteristics of the emitted radiation.
Understanding these interactions is key for controlling supercontinuum generation in optical fiber systems.