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Conference Publication

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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+32 (0)02 629 299

mkuijk@etrovub.be

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