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Updated: Jun 22, 2026
11:08
Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
Waveguides, resonators and their coupled elements in photonic crystal slabs
Optics Express
|May 29, 2009
Summary
Researchers designed and measured photonic crystal slabs with low-loss waveguides and high-Q resonators. They demonstrated novel coupled elements for advanced photonic devices, including channel-drop filters and resonant-tunneling transmission devices.
Area of Science:
- Photonics and optical engineering
- Condensed matter physics
- Materials science
Background:
- Photonic crystals (PhCs) offer unique light manipulation properties.
- Photonic-band-gap (PBG) structures are crucial for integrated photonic circuits.
- Understanding loss mechanisms and group delay is key for device performance.
Purpose of the Study:
- To design, fabricate, and measure PBG waveguides, resonators, and coupled elements in 2D PhC slabs.
- To minimize propagation loss in PBG waveguides.
- To achieve high-Q resonators and demonstrate novel coupled photonic devices.
Main Methods:
- Fabrication and characterization of 2D PhC slabs.
- Time-domain measurements for group delay analysis.
- Design optimization for high-Q resonators and low-loss waveguides.
Main Results:
- Achieved very low propagation loss (~1 dB/mm) in PBG waveguides.
- Observed large group delay (>100 ps) in waveguides.
- Realized high-Q, small-volume resonators in PhC slabs.
- Demonstrated 2-port resonant-tunneling transmission devices, 4-port channel-drop devices (slow light), and 3-port channel-drop devices (resonant-tunneling).
Conclusions:
- Successfully designed and fabricated advanced photonic components in PhC slabs.
- Demonstrated practical applications of PBG structures for integrated optics.
- These findings pave the way for novel photonic integrated circuits with enhanced functionalities.
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