Abstract: A lidar system comprises one or more light sources, detectors, and processors. The light sources transmit pulse groups where each pulse group can include a light pulse in a first wavelength and a light pulse in a second wavelength with an encoding time delay between the pulses. A first transmit pulse group uses a first encoding time delay and a second transmit pulse group uses a second encoding time delay. The first and second encoding time delays are included in a history of transmitted encoding time delays. The detectors detect received light pulses in the first and second wavelengths. The processors perform correlations between a detected timing between a pair of received pulses and one or more encoding time delays to identify which transmit pulse group among candidate transmit pulse groups including the first and second transmit pulse groups corresponds to the pair of received pulses.

Abstract: A system comprises at a first interface, a first optical guide, a second interface, and a second optical guide. A portion of the first interface is configured to receive a first pulse of light emitted by a lidar device and a portion of the second interface is configured to receive a second pulse of light emitted by the lidar device. The first optical guide is configured to propagate the received first pulse of light, wherein at least a portion of the first interface is configured to emit towards the lidar device a version of the received first pulse that propagated through the first optical guide. The second optical guide is configured to propagate the received second pulse of light, wherein at least a portion of the second interface is configured to emit towards the lidar device a version of the received second pulse that propagated through the second optical guide.