Abstract
We present an LED-waveguide-based neural probe array with the highest total light power delivery from a single commercial LED. A separable configuration between the LED and the waveguide has been proposed and verified experimentally for a disposable probe tip. The system comprises of a disposable MEMS optrode array and a reusable unit. The optrode array consists of a 4 × 4 array of 6 mm-long optical fibers assembled with thermally reflowed square-shaped glass microlenses. The reusable unit includes a domed top LED and driving circuitry. Measured light delivery efficiency of the optrode array and the total power efficiency of the probe were −10.6 dB and −21.6 dB, respectively.
Original language | English |
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Pages (from-to) | 276-284 |
Number of pages | 9 |
Journal | Sensors and Actuators, A: Physical |
Volume | 273 |
DOIs | |
State | Published - 15 Apr 2018 |
Keywords
- Light Emitting Diode (LED)
- Neural probe
- Neurostimulation
- Optrode