標題: Anti-interference single-photon LiDAR using stochastic pulse position modulation
作者: Tsai, Chia-Ming
Liu, Yung-Chien
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
公開日期: 15-Jan-2020
摘要: This Letter introduces an anti-interference single-photon light detection and ranging (LiDAR) system with photon-driven stochastic pulse position modulation. A photon arrival sequence with a programmable minimum interval time and trigger rate was proposed to trigger laser pulses, thus providing true nature-based randomness in modulation which is beneficial for achieving bet ter anti-interference capability. In the proposed LiDAR system, two complementary metal-oxide-semiconductor single-photon avalanche diodes (SPADs) are used as an optical receiver and to generate a random trigger pattern of a pulsed laser. To prevent the range ambiguity problem, an interval-time filter capable of controlling the minimum interval time is integrated into the LiDAR system. A trigger rate controller capable of adaptively controlling the driving voltage of a light-emitting diode coupled with the SPAD responsible for the generation of the random trigger sequence is also integrated for achieving a precise control of trigger rate. Finally, a proof-ofconcept demonstration was provided through experiments, and the obtained results were consistent with theoretical predictions. At an effective trigger rate of 800 kHz,, an excellent suppression ratio of 56.2 dB has been achieved in the presence of a 1 MHz periodic interference. (C) 2020 Optical Society of America
URI: http://dx.doi.org/10.1364/OL.384894
http://hdl.handle.net/11536/153821
ISSN: 0146-9592
DOI: 10.1364/OL.384894
期刊: OPTICS LETTERS
Volume: 45
Issue: 2
起始頁: 439
結束頁: 442
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