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Time-of-flight Optical Ranging Sensor Based on a Current Assisted Photonic Demodulator Host Publication: Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet Authors: D. Van Nieuwenhove, W. van der Tempel, R. Grootjans and M. Kuijk Publication Year: 2006 Number of Pages: 4
Abstract: The presented optical ranging sensor utilizes a current assisted photonic demodulator
(CAPD) in combination with an integrating circuit to measure time-of-flight. The
distance information is obtained by correlating received modulated light with the sentout
signal. Simulations and measurements show that the structure is suitable as a pixel
in a real-time 3D-camera setup. A CMOS prototype is presented showing 0.25 A/W
infrared photo-responsivity, nearly 100% detector demodulation efficiency and good
linearity. Different design aspects and possibilities are discussed and evaluated. With
averaging, real time sub-cm resolution is achieved at a modulation speed of 20 MHz
and using NIR 860 nm light.
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