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Updated: May 14, 2026

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Optical transcutaneous link for low power, high data rate telemetry.

Tianyi Liu1, Ulrich Bihr, Syed M Anis

  • 1Institute of Microelectronics, University of Ulm, Albert-Einstein-Allee 43, Ulm, Germany. tianyi.liu@uni-ulm.de

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
|February 1, 2013
PubMed
Summary

This study presents a low-power, high-speed wireless optical link for implantable devices, achieving 50 Mbps data transmission through 4 mm of tissue with minimal power consumption, ideal for neural prosthetics.

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Area of Science:

  • Biomedical Engineering
  • Optical Communications
  • Implantable Devices

Background:

  • Neural prosthetic applications require high-speed communication between implanted and external devices.
  • Radio frequency (RF) telemetry for implantable devices has high power requirements.
  • Optical transcutaneous links offer a lower-power alternative for implantable telemetry.

Purpose of the Study:

  • To develop a low-power, high-data-rate wireless optical link for implantable data transmission.
  • To enhance the efficiency of optical transcutaneous links for neural recording systems.
  • To meet the demand for high-speed communication in neural prosthetic applications.

Main Methods:

  • Utilized a modified on-off keying modulation scheme.
  • Designed a custom, low-power Vertical Cavity Surface-Emitting Laser (VCSEL) driver.

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  • Implemented an optical transcutaneous link for data transmission through biological tissue.

    • Main Results:

    • Achieved a data transmission rate of 50 Mbps.
    • Successfully transmitted data through 4 mm of tissue.
    • Demonstrated tolerance to 2 mm of misalignment.
    • Maintained a Bit Error Rate (BER) below 10^-5.
    • Achieved a power consumption of 4.1 mW or less.

    Conclusions:

    • The developed wireless optical link is a viable, low-power solution for high-speed data transmission in implantable devices.
    • This technology offers significant advantages over RF telemetry for applications like neural recording.
    • The system's performance metrics support its potential use in advanced neural prosthetic systems.