US 11,921,363 B2
Photonic resonator based phase shifting
Brian J. Roxworthy, San Jose, CA (US); and Pradeep Srinivasan, Fremont, CA (US)
Assigned to Aeva, Inc., Mountain View, CA (US)
Filed by AEVA, INC., Mountain View, CA (US)
Filed on Jan. 9, 2023, as Appl. No. 18/094,648.
Application 18/094,648 is a continuation of application No. 17/538,283, filed on Nov. 30, 2021, granted, now 11,550,171.
Application 17/538,283 is a continuation of application No. 17/149,280, filed on Jan. 14, 2021, granted, now 11,209,677, issued on Dec. 28, 2021.
Prior Publication US 2023/0161183 A1, May 25, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G02F 1/01 (2006.01); G01S 17/89 (2020.01); G02B 6/12 (2006.01); G02F 1/21 (2006.01); G02F 1/225 (2006.01)
CPC G02F 1/0147 (2013.01) [G01S 17/89 (2013.01); G02B 6/12007 (2013.01); G02F 1/212 (2021.01); G02F 1/2255 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An interferometer comprising:
a plurality of waveguide branches comprising a plurality of bus waveguides and a plurality of photonic resonators, wherein a first waveguide branch of the plurality of waveguide branches comprises:
a first photonic resonator of the plurality of photonic resonators coupled to a first bus waveguide of the plurality of bus waveguides, wherein the first photonic resonator is disposed to couple and circle a first portion of an optical beam at the first photonic resonator to generate a first phase shift of the first portion of the optical beam, wherein the first phase shift is the same as a second phase shift of a second photonic resonator of the plurality of photonic resonators coupled to a second bus waveguide of the plurality of bus waveguides, and
wherein the interferometer forms at least a portion of an in-phase and quadrature (IQ) modulator.