Laser and modulation method of laser signal thereof, laser radar
By employing a synergistic design of active waveguide segments and ring waveguides in the FMCW lidar, stable frequency modulation of the laser signal was achieved, solving the problem of modulation characteristic degradation caused by electrical injection and improving ranging accuracy and resolution.
CN122456293APending Publication Date: 2026-07-24北京集光智研科技有限公司
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 北京集光智研科技有限公司
- Filing Date
- 2025-01-24
- Publication Date
- 2026-07-24
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Figure CN122456293A_ABST
Abstract
The application discloses a kind of laser and the modulation method of laser signal thereof, laser radar.Therein, the device belongs to the field of laser radar, comprising: at least one active waveguide section, for generating laser signal according to preset laser mode, wherein at least one active waveguide section is used to indicate the active waveguide section containing active gain medium;Annular waveguide is matched with active waveguide, and the distance between annular waveguide and the active waveguide section matched therewith is less than preset distance;Annular waveguide, for adjusting the lasing wavelength of laser signal according to injected bias current, and modulating the frequency of the laser signal according to the received current modulation signal, to obtain modulated laser signal.The application solves the technical problem that the modulation characteristics of frequency modulation signal are deteriorated when using electric injection method for frequency modulation in FMCW frequency modulation laser in the related art.
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