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Photonic Demodulator With Sensitivity Control

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5 Author(s)
Danil Van Nieuwenhove ; Electron. & Informatics Dept., Vrije Univ. Brussel, Brussels ; Ward van der Tempel ; Riemer Grootjans ; Johan Stiens
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A current assisted photonic demodulator for use as a pixel in a 3-D time-of-flight imager shows nearly 100% static demodulator contrast and is operable beyond 30 MHz. An integrated tunable sensitivity control is also presented for increasing the distance measurement range and avoiding unwanted saturation during integration periods. This is achieved by application of a voltage on a dedicated drain tap showing a quenching of sensor sensitivity to below 1%

Published in:

IEEE Sensors Journal  (Volume:7 ,  Issue: 3 )