US 12,248,174 B2
Photonic integrated circuit and light detection and ranging system
William Hayenga, Los Angeles, CA (US); George Rakuljic, Santa Monica, CA (US); and Eduardo Temprana Giraldo, Culver City, CA (US)
Assigned to Intel Corporation, Santa Clara, CA (US)
Filed by Intel Corporation, Santa Clara, CA (US)
Filed on Sep. 10, 2021, as Appl. No. 17/471,218.
Prior Publication US 2021/0405290 A1, Dec. 30, 2021
Int. Cl. G02B 6/12 (2006.01); G01S 7/481 (2006.01); G01S 17/08 (2006.01); G02B 17/08 (2006.01); G02B 6/293 (2006.01)
CPC G02B 6/12007 (2013.01) [G01S 7/4816 (2013.01); G01S 17/08 (2013.01); G02B 6/12004 (2013.01); G02B 2006/12138 (2013.01); G02B 6/29346 (2013.01); G02B 6/29395 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A photonic integrated circuit comprising a semiconductor substrate having integrated:
a plurality of optical channels each configured to emit coherent light of a first wavelength and a second wavelength to the outside and to receive coherent light of the first wavelength and the second wavelength from the outside;
a semiconductor light source configured to emit coherent light of at least the first wavelength and the second wavelength, the semiconductor light source having a first Q factor;
a waveguide structure optically coupled to the semiconductor light source, the waveguide structure having a second Q factor that is higher than the first factor, the waveguide structure configured to form an optical cavity for at least the light of the first wavelength and the second wavelength;
an optical output structure configured to optically couple the waveguide structure with the plurality of optical channels to transmit light of the first wavelength and the second wavelength from the waveguide structure to the plurality of optical channels.