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Dynamic control of diode bias voltage (photon-caused avalanche)

  • US 9,048,370 B1
  • Filed: 03/14/2013
  • Issued: 06/02/2015
  • Est. Priority Date: 03/14/2013
  • Status: Active Grant
First Claim
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1. A method comprising:

  • varying a bias voltage of a photodiode;

    detecting spurious signals generated by the photodiode while varying the bias voltage of the photodiode;

    determining, for each of one or more bias voltages, a respective frequency of occurrence of the spurious signals;

    determining a threshold bias voltage at which a frequency of occurrence of the spurious signals reaches a threshold frequency;

    determining an operating bias voltage for the photodiode based on at least the threshold bias voltage; and

    operating the photodiode with the operating bias voltage in a light-detection and ranging (LIDAR) system.

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