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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
Nonreciprocal Bloch oscillations in magneto-optic waveguide arrays
1Department of Physics, Michigan Technological University, Houghton, Michigan 49931, USA. mlevy@mtu.edu
Optics Letters
|September 18, 2010
Summary
Nonreciprocal optical Bloch-like oscillations appear in magnetized waveguide arrays due to an index step. This leads to distinct wavenumbers and phase coherence properties for light propagating in opposite directions.
Area of Science:
- Photonics
- Condensed Matter Physics
- Optical Engineering
Background:
- Waveguide arrays are crucial for optical signal processing.
- Magneto-optic effects enable control over light propagation.
- Bloch oscillations describe particle behavior in periodic potentials.
Purpose of the Study:
- To investigate nonreciprocal optical Bloch-like oscillations.
- To explore the role of transverse magnetization and index steps.
- To analyze phase coherence in bidirectional light propagation.
Main Methods:
- Theoretical modeling of transversely magnetized waveguide arrays.
- Analysis of normal modes and their wavenumbers.
- Investigation of phase coherence and decoherence properties.
Main Results:
- Emergence of nonreciprocal optical Bloch-like oscillations.
- Different wavenumbers for normal modes in opposite directions.
- Significant differences in phase coherence and decoherence observed.
Conclusions:
- Nonreciprocity is achieved through engineered index gradients and transverse magnetization.
- The findings offer new possibilities for optical devices with directional control.
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