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Reconfigurable microfiber-coupled photonic crystal resonator
Optics Express
|June 25, 2009
Summary
We developed reconfigurable photonic crystal (PhC) lasers by using a movable microfiber. This allows for the precise and repeatable positioning of PhC resonators, enabling tunable laser operation.
Area of Science:
- Photonics
- Nanotechnology
- Laser Physics
Background:
- Photonic crystal (PhC) waveguides offer unique light manipulation properties.
- Creating tunable or reconfigurable PhC devices is crucial for advanced optical circuits.
Purpose of the Study:
- To propose and demonstrate a novel method for creating reconfigurable PhC lasers.
- To enable dynamic control over PhC resonator formation and laser operation.
Main Methods:
- Utilizing a linear PhC waveguide and a curved microfiber.
- Relocating the microfiber along the waveguide to define and redefine PhC resonator positions.
- Analyzing the shift in cutoff frequency and effective index of the PhC waveguide due to microfiber proximity.
- Observing laser operation near PhC band edges to confirm resonator formation.
Main Results:
- Successfully demonstrated reconfigurable microfiber-coupled PhC lasers.
- Showcased the ability to repeatedly define and redefine PhC resonator positions by microfiber relocation.
- Confirmed the formation of a Gaussian-shaped potential well for the PhC resonator.
- Observed laser operation tuned by the reconfigurable resonator near band edges.
Conclusions:
- The proposed microfiber-coupling technique provides a versatile and reconfigurable platform for PhC lasers.
- This method allows for dynamic control over optical resonance and laser characteristics.
- Opens possibilities for integrated and tunable photonic devices.
