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High efficiency light coupling from antiresonant reflecting optical waveguide to integrated photodetector using an
Applied Optics
|June 23, 2010
Summary
Antiresonant reflecting optical waveguides (ARROW) offer efficient light guidance. Novel integrated ARROW-photodetector structures achieve over 90% coupling efficiency with reduced device size.
Area of Science:
- Optoelectronics
- Waveguide Technology
- Integrated Optics
Background:
- Analysis of antiresonant reflecting optical waveguide (ARROW) dispersion and radiation loss.
- Understanding light radiation mechanisms from ARROW core to semiconductor substrate.
Purpose of the Study:
- To derive approximate formulas for ARROW propagation characteristics aiding design.
- To propose novel integrated ARROW-photodetector structures for enhanced performance.
- To improve coupling efficiency, reduce device size, and simplify fabrication.
Main Methods:
- Detailed analysis of ARROW waveguide dispersion and radiation loss characteristics.
- Theoretical derivation of approximate formulas for propagation properties.
- Design and experimental validation of novel ARROW-photodetector integrated structures.
Main Results:
- Explanation of light radiation mechanism in ARROW waveguides.
- Development of useful approximate formulas for ARROW design.
- Demonstration of high coupling efficiency (>90%) with short detector lengths in novel structures.
Conclusions:
- The proposed ARROW-based integrated structures significantly enhance coupling efficiency.
- Antireflecting (AR) layers are crucial for achieving high coupling efficiency.
- These novel structures offer a practical solution for efficient optoelectronic device integration.
