1 results about "Spiral resonator" patented technology

The utility model discloses a kind of narrow line width on-chip external cavity laser of high-speed tuning and laser radar.It contains gain chip and external cavity chip, external cavity chip includes end face coupler, phase shifter, wavelength selector, directional coupler and spiral resonator;Wherein gain chip and the end face coupler one end of external cavity chip are connected with end face optical coupling, end face coupler other end is connected with directional coupler one end in sequence after phase shifter, wavelength selector, directional coupler and spiral resonator are coupled connection, directional coupler other end connects output waveguide, and laser is exported by output waveguide.The utility model can realize the narrow line width laser output of high-speed tuning, to improve the resolution and detection accuracy of laser radar.