21-01-2021 дата публикации
Номер: US20210018599A1
Принадлежит:
A three-dimensional scanning LiDAR based on one-dimensional optical phased arrays comprises a transmitting end, a coherent receiving end and an incoherent receiving end, wherein the transmitting end, the coherent receiving end and the incoherent receiving end are all one-dimensional arrays. A phase control complexity of the three-dimensional scanning phased array is reduced, and a tunable laser with high cost and a grating array antenna with large crosstalk are avoided. The LiDAR provides pure solid-state three-dimensional scanning in speed and integration level and is highly practical. 1. A three-dimensional scanning LiDAR based on one-dimensional optical phased arrays , comprising{'b': '12', 'a narrow line width laser light source (),'}{'b': '11', 'a high-speed integrated circuit controller () comprising a first input end, a second input end, and two output ends'}{'b': 16', '16, 'claim-text': [{'b': '101', 'a detection light input waveguide (),'}, {'b': '102', 'a first beam splitter module (),'}, {'b': '103', 'a phase shifter array module (), and'}, {'b': 104', '101', '102', '103', '104', '12, 'a coupling suppressed one-dimensional transmitting array with sub-wavelength pitch (), wherein the detection light input waveguide (), the first beam splitter module (), the phase shifter array module (), and the coupling suppressed one-dimensional transmitting array of sub-wavelength pitch () are arranged in sequence along the propagation of detection light provided by the narrow line width laser light source (),'}], 'a transmitting end (Tx) (), the transmitting end (Tx) () further comprising'}{'b': 15', '201', '204', '202', '203', '204', '12, 'a coherent receiving end (Rc) (), the coherent receiving end (Rc) comprising of a spot-size converted one-dimensional receiving array of sparse antenna pitch (), and a coherent receiving module () along the propagation direction of the signal light reflected from the target and a reference light input waveguide (), a second beam ...
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