US 11,940,621 B2
Two dimensional optical phased arrays using edge-coupled integrated circuits
Michael Robert Watts, Hingham, MA (US); Ehsan Shah Hosseini, Boston, MA (US); Benjamin Roy Moss, Cambridge, MA (US); and Christopher Vincent Poulton, Cambridge, MA (US)
Assigned to Analog Photonics LLC, Boston, MA (US)
Filed by Analog Photonics LLC, Boston, MA (US)
Filed on Sep. 2, 2021, as Appl. No. 17/464,918.
Claims priority of provisional application 63/074,611, filed on Sep. 4, 2020.
Prior Publication US 2022/0075186 A1, Mar. 10, 2022
Int. Cl. G02B 27/00 (2006.01); G01S 7/481 (2006.01); G02B 3/00 (2006.01); G02F 1/295 (2006.01)
CPC G02B 27/0087 (2013.01) [G01S 7/4815 (2013.01); G02B 3/0056 (2013.01); G02F 1/2955 (2013.01); G02F 2203/24 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a first integrated circuit comprising:
a plurality of sets of optical waveguides, each set of optical waveguides including a plurality of optical waveguide segments, and
a plurality of optical emitter elements arranged over a first surface of the first integrated circuit, each optical emitter element coupled to a distal end of one of the optical waveguide segments;
a second integrated circuit comprising:
a plurality of optical phase shifters that each provide a phase-shifted optical wave that is coupled to the first integrated circuit from a first edge surface of the second integrated circuit; and
a third integrated circuit comprising:
a plurality of optical phase shifters that each provide a phase-shifted optical wave that is coupled to the first integrated circuit from a first edge surface of the third integrated circuit;
wherein
the first edge surface of the second integrated circuit is in proximity to a row of proximal ends of the optical waveguide segments of a first set of the plurality of sets of optical waveguides, and
the first edge surface of the third integrated circuit is in proximity to a row of proximal ends of the optical waveguide segments of a second set of the plurality of sets of optical waveguides.