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Plasmonic Bragg microcavity as an efficient electro-optic modulator
Optics Express
|July 19, 2020
Summary
We developed a novel plasmonic electro-optic modulator using a Bragg microcavity and Pockels material. This compact device achieves a high extinction ratio and modulation depth with low driving voltage, advancing efficient communication technologies.
Area of Science:
- Photonics and Materials Science
- Optoelectronics and Nanophotonics
Background:
- Plasmonic devices offer potential for miniaturized and efficient optical communication components.
- Electro-optic modulators are crucial for signal manipulation in optical systems.
Purpose of the Study:
- To introduce and optimize a novel plasmonic electro-optic modulator.
- To explore the performance of a modulator based on a plasmonic Bragg microcavity and Pockels material.
Main Methods:
- Detailed design and optimization of the modulator structure.
- Two-dimensional scanning of geometrical parameters to identify optimal configurations.
Main Results:
- Achieved an extinction ratio of 19.8 dB.
- Obtained an insertion loss of 2.8 dB.
- Reached a modulation depth of 0.99 at a driving voltage of ±5 V.
Conclusions:
- The proposed plasmonic Bragg microcavity modulator demonstrates high performance.
- This design shows promise for compact and efficient electro-optic modulation in communication devices.
