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Writing Bragg Gratings in Multicore Fibers
Published on: April 20, 2016
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Bragg solitons in systems with separated nonuniform Bragg grating and nonlinearity
1School of Electrical and Information Engineering, The University of Sydney, NSW 2006, Australia.
Physical Review. E
|January 20, 2018
Summary
This study investigates quiescent Bragg grating solitons in dual-core fibers, finding stable soliton solutions in specific spectral gaps. A key finding is that stronger grating coupling counteracts stabilization from dispersive reflectivity.
Area of Science:
- Nonlinear optics
- Fiber optics
- Soliton physics
Background:
- Bragg gratings enable unique light manipulation in optical fibers.
- Solitons are self-reinforcing wave packets crucial for optical communications.
Purpose of the Study:
- Investigate the existence and stability of quiescent Bragg grating solitons in a dual-core fiber system.
- Analyze the influence of system parameters on soliton stability and side lobe formation.
Main Methods:
- Numerical simulations to analyze soliton stability.
- Derivation of analytical expressions for soliton tails.
- Systematic investigation of parameter effects (dispersive reflectivity, group velocity difference, grating coupling).
Main Results:
- Identified three spectral gaps, with a genuine central band gap.
- Found soliton solutions exclusively in the lower and upper gaps.
- Observed soliton side lobe formation and derived analytical expressions for their tails.
- Discovered vast stable regions for solitons in the lower and upper gaps.
- Determined that stronger grating coupling counteracts stabilization from dispersive reflectivity.
Conclusions:
- Quiescent Bragg grating solitons exist and can be stable in specific spectral gaps of the dual-core fiber system.
- System parameters significantly influence soliton stability, with a trade-off between grating coupling and dispersive reflectivity effects.
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