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Updated: May 9, 2026
14:58
Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
Published on: June 3, 2015
Matching p-i-n-junctions and optical modes enables fast and ultra-small silicon modulators.
Stefan Meister1, Hanjo Rhee, Aws Al-Saadi
1Technische Universität Berlin, Institut für Optik und Atomare Physik, Strasse des 17. Juni 135, 10623 Berlin, Germany. smeister@physik.tu-berlin.de
Optics Express
|July 12, 2013
Summary
A novel node-matched doping method enables low-loss, high-speed carrier transport in photonic crystal resonators. This technique optimizes diode placement for efficient switching, paving the way for integrated transceivers.
Area of Science:
- Photonics
- Materials Science
- Electrical Engineering
Background:
- Diffraction-limited photonic crystal resonators are crucial for optical devices.
- Implementing fast carrier transport structures in these resonators traditionally faces challenges with energy loss.
- Existing methods struggle to efficiently integrate high-speed modulation capabilities.
Purpose of the Study:
- To introduce a new method for low-loss, fast carrier transport in photonic crystal resonators.
- To demonstrate a 'node-matched doping' process for enhanced device performance.
- To develop efficient diode-modulators for monolithic integration.
Main Methods:
- Utilized a 'node-matched doping' process with precise silicon doping.
- Created comb-like shaped, highly-doped diode areas matched to the resonator's optical mode spatial field distribution.
- Applied doping to areas of low optical field strength, ensuring the diode region overlaps with optical field maxima.
Main Results:
- Achieved low-loss implementation of fast carrier transport structures.
- Demonstrated node-matched diode-modulators with small size and high-speed switching.
- Confirmed thermal stability and energy-efficient operation of the developed modulators.
Conclusions:
- The node-matched doping method offers a significant advancement for photonic crystal resonators.
- These diode-modulators are highly suitable for monolithically integrated transceivers.
- The technology promises efficient and stable optical switching for future communication systems.
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