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Piezoelectric-based optical modulator for miniaturized wireless medical implants.
Optics Express
|December 16, 2022
Summary
Researchers developed a new CMOS-compatible electro-optic modulator for ultrasmall medical implants. This device enables high-speed optical data uplinks, paving the way for miniaturized bio-sensing systems.
Area of Science:
- Biomedical Engineering
- Electrical Engineering
- Materials Science
Background:
- Optical communication is explored for ultrasmall wireless medical implants.
- Existing optical communication devices face challenges like CMOS incompatibility, high bias voltage, and power consumption.
Purpose of the Study:
- To present a novel high-Q CMOS-compatible electro-optic modulator.
- To enable optical data uplinks for medical implants.
Main Methods:
- Development of a high-Q CMOS-compatible electro-optic modulator.
- Characterization of the modulator's performance, including capacitance, bias voltage, and operating voltage.
Main Results:
- The modulator functions as a pF-scale capacitor.
- It requires no bias voltage and operates at CMOS voltages as low as 0.5V.
Conclusions:
- The developed modulator offers a viable path toward realizing millimeter (mm)- and sub-mm scale wireless implants.
- This technology supports advanced bio-sensing applications through efficient optical data transmission.
