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Updated: May 18, 2026
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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
Controllable optical analog to electromagnetically induced transparency in coupled high-Q microtoroid cavities
Can Zheng1, Xiaoshun Jiang, Shiyue Hua
1National Laboratory of Solid State Microstructures and College of Engineering and Applied Science, Nanjing University, Nanjing 210093, China.
Optics Express
|October 6, 2012
Summary
Researchers created an all-optical analog to electromagnetically induced transparency (EIT) on a chip. This optical EIT
Area of Science:
- Optics and Photonics
- Quantum Optics
- Nanophotonics
Background:
- Electromagnetically induced transparency (EIT) is a quantum interference effect.
- All-optical analogs of EIT are crucial for developing optical switches and quantum information processing.
- On-chip implementations are highly desirable for miniaturization and integration.
Purpose of the Study:
- To experimentally demonstrate an all-optical analog to EIT on a chip.
- To investigate the control mechanisms for the transmission spectrum of the all-optical EIT analog.
Main Methods:
- Utilized coupled high-Q silica microtoroid cavities with Q-factors exceeding 10^6.
- Fabricated an on-chip platform integrating two microtoroid resonators.
- Precisely controlled inter-cavity distance and resonance frequency detunings.
Main Results:
- Successfully demonstrated an all-optical analog to EIT using coupled microtoroid cavities.
- Showcased precise control over the transmission spectrum by adjusting cavity coupling and detunings.
- Achieved high-Q factors enabling distinct transparency windows.
Conclusions:
- The demonstrated on-chip all-optical EIT analog offers a promising platform for integrated photonic devices.
- Tunable spectral characteristics pave the way for advanced optical signal processing and quantum technologies.
- High-Q microtoroid cavities are effective for realizing complex optical phenomena on-chip.
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