Related Experiment Video
Updated: Jul 4, 2026
07:42
Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator
Published on: December 15, 2021
Observation of polychromatic gap solitons
Andrey A Sukhorukov1, Dragomir N Neshev, Alexander Dreischuh
1Center for Ultra-high bandwidth Devices for Optical Systems, Nonlinear Physics Center and Laser Physics Center, Research School of Physical Sciencesand Engineering, Australian National University, Canberra ACT 0200, Australia.
Optics Express
|June 12, 2008
Summary
We demonstrate polychromatic gap solitons using supercontinuum light in optical waveguide arrays. These solitons exhibit simultaneous spatio-spectral localization within the photonic bandgap, creating a unique staggered phase structure for all colors.
Area of Science:
- Nonlinear optics
- Condensed matter physics
- Photonics
Background:
- Supercontinuum generation leads to broad spectral content.
- Optical waveguide arrays support light propagation with unique dispersion properties.
- Photonic bandgaps create spectral regions where light propagation is forbidden.
Purpose of the Study:
- To theoretically and experimentally investigate polychromatic gap solitons.
- To understand the formation mechanism of these solitons from supercontinuum light.
- To characterize the spatio-spectral localization and phase structure.
Main Methods:
- Theoretical modeling of light propagation in optical waveguide arrays.
- Experimental generation and observation of solitons using supercontinuum light.
- Analysis of diffraction-induced broadening, color separation, and spatio-spectral localization.
Main Results:
- Observed the formation of polychromatic gap solitons.
- Demonstrated a sharp transition from diffraction to localization.
- Characterized the simultaneous spatio-spectral localization of supercontinuum light.
- Identified the formation of a staggered phase structure across all colors.
Conclusions:
- Polychromatic gap solitons can be generated from supercontinuum light in waveguide arrays.
- The formation involves a transition from diffraction to simultaneous spatio-spectral localization.
- These solitons possess a characteristic staggered phase structure for all spectral components.
More Related Videos
Related Concept Videos
02:18Interference and Diffraction
Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
01:01Energy Bands in Solids
Isolated atoms have discrete energy levels that are well described by the Bohr model. And, it quantifies the energy of an electron in a hydrogen atom as En. Higher quantum numbers 'n' yield less negative, closer electron energy levels.
Band Formation:
When atoms are brought close together, as in a solid, these discrete energy levels begin to split due to the overlap of electron orbitals from adjacent atoms. This split occurs because of the Pauli exclusion principle, which states that no two...
Band Formation:
When atoms are brought close together, as in a solid, these discrete energy levels begin to split due to the overlap of electron orbitals from adjacent atoms. This split occurs because of the Pauli exclusion principle, which states that no two...
01:28Standing Waves in a Cavity
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
01:08IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations
Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single stretching vibration...
02:12Solvating Effects
An understanding of the solvating effect helps rationalize the relation between solvation and acidity of the compound. In addition, this also explains the relative stability of conjugate bases for compounds with different pKa values. This lesson details, in-depth, the principle of solvating effects. The strength of an acid and the stability of its corresponding conjugate base are determined using pKa values. This observed relationship is a consequence of solvation, which is the interaction...
01:21Boundary Conditions: Lossless Lines
Consider a single-phase, two-wire, lossless transmission line terminated by an impedance at the receiving end and a source with Thevenin voltage and impedance at the sending end. The line, with length, has a surge impedance and wave velocity determined by the line's inductance and capacitance.
At the receiving end, the boundary condition states that the voltage equals the product of the receiving-end impedance and current. This relationship is expressed as a function of the incident and...
At the receiving end, the boundary condition states that the voltage equals the product of the receiving-end impedance and current. This relationship is expressed as a function of the incident and...