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Coherent laser ranging chip and system thereof

A technology of laser ranging and chips, which is applied in radio wave measurement systems, measurement devices, electromagnetic wave re-radiation, etc., can solve problems such as the difficulty of integrated development of laser radar detection systems, and achieve the benefits of integrated development, avoiding interference, and Achieve miniaturization and chip miniaturization

Pending Publication Date: 2020-11-03
CHINA SCI PHOTON CHIP HAINING TECH CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a coherent laser ranging chip and its system to solve the technical problem that the existing laser radar detection system is difficult to integrate and develop

Method used

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  • Coherent laser ranging chip and system thereof
  • Coherent laser ranging chip and system thereof
  • Coherent laser ranging chip and system thereof

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Embodiment Construction

[0027] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention discloses a coherent laser ranging chip and a system thereof, tThe chip comprises a substrate, and a light source modulation unit, a transceiving unit, a mixing conversion unit and a waveguide which are prepared on the substrate, and the light source modulation unit; the transceiving unit and the mixing conversion unit are connected through the waveguide; the light source modulationunit is used for outputting modulated signal light and reference light, and the signal light passes through the transceiving unit and then irradiates a target object to form reflected signal light; and the mixing conversion unit is used for receiving the reference light and the reflected signal light, and converting and detecting the reference light and the reflected signal light to obtain a ranging signal. According to the invention, the substrate is adopted, the light source modulation unit, the transceiving unit and the mixing conversion unit are prepared and formed on the substrate to complete the acquisition of a target object ranging signal, and the waveguide formed on the substrate is adopted to achieve the transmission of an optical signal among the units. Therefore, a chip can beadopted to realize acquisition of a ranging signal, and miniaturization and chip formation of coherent ranging are achieved.

Description

technical field [0001] The invention relates to the technical field of laser radar, in particular to a coherent laser ranging chip and a system thereof. Background technique [0002] Laser ranging technology currently has extensive and irreplaceable applications in the fields of autonomous driving, virtual / augmented reality, and optical communications. Detection of the distance of the measured object. [0003] At present, the coherent detection method, as a relatively strong anti-interference scheme, is more and more used in the laser ranging system. According to the different laser modulation methods, the more common coherent ranging schemes are: frequency modulated continuous wave (frequency modulated continuous wave) continuous wave, FMCW) and chirped amplitude modulation (chirped amplitude modulation, CAM), etc. [0004] However, in the existing laser ranging technology, the laser ranging system used is generally relatively bulky. This largely restricts the integrated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/32G01S7/481G01S7/4913
CPCG01S17/32G01S7/481G01S7/4913
Inventor 刘敬伟田成才
Owner CHINA SCI PHOTON CHIP HAINING TECH CO LTD
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