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Optical bistability in a nonlinear optical coupler with a negative index channel
Natalia M Litchinitser1, Ildar R Gabitov, Andrei I Maimistov
1Department of Electrical Engineering and Computer Science, University of Michigan, 2200 Bonisteel Boulevard, 3113 ERB1, Ann Arbor, Michigan 48109, USA. natashan@eecs.umich.edu
A novel nonlinear optical coupler utilizes negative index metamaterials to achieve optical bistability and gap soliton formation. This design leverages unique material properties for enhanced feedback mechanisms in photonic devices.
Area of Science:
- Photonics and optical engineering
- Metamaterials science
Background:
- Nonlinear optical couplers are essential components in photonic circuits.
- Metamaterials offer unique electromagnetic properties not found in natural materials.
Purpose of the Study:
- To investigate a novel nonlinear coupler design incorporating a negative index metamaterial.
- To explore the potential for optical bistability and gap soliton formation in such a device.
Main Methods:
- Theoretical analysis of a nonlinear coupler with one channel containing a negative index metamaterial.
- Investigating the interplay between phase velocity and energy flow directionality.
Main Results:
- Demonstrated an effective feedback mechanism due to opposing phase and energy flow in the metamaterial channel.
- Observed conditions conducive to optical bistability.
- Identified the formation of gap solitons.
Conclusions:
- The proposed nonlinear coupler design enables optical bistability and gap soliton formation.
- Negative index metamaterials provide a unique pathway for advanced optical device functionalities.
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