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Analysis of the optical force in the Micro Ring Resonator
1Department of Applied Physics, The Benin School of Engineering and Computer Science, The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel.
Optics Express
|October 15, 2011
Summary
Researchers enhanced optical force in micro ring resonators by introducing asymmetry and coupling to photonic crystal waveguides. This overcomes limitations and boosts optical force through resonance and slow light effects.
Area of Science:
- Photonics and optical engineering
- Nanophotonics
- Quantum optics
Background:
- Micro ring resonators are key components in integrated photonics.
- Optical forces are crucial for manipulating micro- and nanostructures.
- Coupling waveguides to resonators influences optical force dynamics.
Purpose of the Study:
- To investigate optical force in a micro ring resonator coupled to a bus waveguide.
- To analyze the impact of symmetric and antisymmetric modes on optical force.
- To explore novel geometries for enhanced optical force generation.
Main Methods:
- Coupled mode theory (CMT) was employed for theoretical analysis.
- Finite Element Method (FEM) was used for numerical simulations.
- Investigated asymmetric waveguide modifications and coupling to 1D photonic crystal waveguides.
Main Results:
- Resonance enhancement of optical force is limited by opposing attractive and repulsive forces.
- Introducing asymmetry to the system effectively removes this limiting factor.
- Coupling the micro ring resonator to a 1D photonic crystal waveguide significantly enhances optical force.
Conclusions:
- Asymmetric designs are crucial for overcoming limitations in optical force enhancement.
- Combining micro ring resonators with photonic crystal waveguides offers a new pathway for strong optical force generation.
- This work paves the way for advanced optical manipulation and sensing applications.
