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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
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Slow light bimodal interferometry in one-dimensional photonic crystal waveguides
Luis Torrijos-Morán1, Amadeu Griol2, Jaime García-Rupérez3
1Nanophotonics Technology Center, Universitat Politècnica de València, 46022, Valencia, Spain. luitorm2@ntc.upv.es.
Light, Science & Applications
|January 15, 2021
Summary
Researchers developed a novel, ultra-compact photonic crystal interferometer using slow light. This breakthrough significantly reduces optical path length, enabling smaller, more sensitive photonic devices for various applications.
Area of Science:
- Photonics
- Materials Science
- Electrical Engineering
Background:
- Miniaturization of optical circuits is crucial for integrated photonic devices.
- Integrated interferometers are key components in on-chip applications.
- Designing short interferometers is challenging due to required interaction lengths.
Purpose of the Study:
- To demonstrate slow light bimodal interferometric behavior in a 1D photonic crystal.
- To overcome size limitations in integrated interferometer design.
- To enable ultra-compact and highly sensitive photonic devices.
Main Methods:
- Fabrication of a straightforward all-dielectric bimodal photonic crystal structure.
- Experimental demonstration of two electromagnetic modes with a large group velocity difference.
- Utilizing slow light effects for optical path reduction.
Main Results:
- Achieved over a 20-fold reduction in higher-order mode group velocity.
- Demonstrated a significant optical path reduction compared to conventional interferometers.
- Successfully created an ultra-compact optical modulator and a highly sensitive photonic sensor.
Conclusions:
- The proposed bimodal photonic crystal interferometer offers a novel approach to miniaturization.
- This technology enables significant performance improvements in photonic devices.
- The design is straightforward, potentially reducing fabrication complexity and cost.
