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1. (WO2018140075) DUAL FREQUENCY FMCW LIDAR AND METHOD

Pub. No.:    WO/2018/140075    International Application No.:    PCT/US2017/035320
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Thu Jun 01 01:59:59 CEST 2017
IPC: G01S 7/481
G01S 17/32
Applicants: HRL LABORATORIES, LLC
Inventors: EFIMOV, Oleg M.
Title: DUAL FREQUENCY FMCW LIDAR AND METHOD
Abstract:
A lidar including a laser having a first frequency-modulated laser radiation and a second frequency-modulated laser radiation, a first waveguide coupled to the laser, wherein the first frequency-modulated laser radiation and the second frequency-modulated laser radiation are transmitted by the laser into the first waveguide, a second waveguide, a filter coupled between the first waveguide and the second waveguide, wherein the filter is configured to couple and pass the first frequency-modulated laser radiation through the filter to the second waveguide, and is configured to not couple or pass the second frequency-modulated laser radiation through the filter to the second waveguide, and a photodetector coupled to the second waveguide.