US 12,345,967 B2
Optical modulator
Adam Scofield, Los Angeles, CA (US); Aaron John Zilkie, Pasadena, CA (US); Guomin Yu, Glendora, CA (US); Thomas Pierre Schrans, Temple City, CA (US); David John Thomson, Eastleigh (GB); and Weiwei Zhang, Southampton (GB)
Assigned to Rockley Photonics Limited, Altrincham (GB); and University of Southampton, Southampton (GB)
Appl. No. 17/753,276
Filed by ROCKLEY PHOTONICS LIMITED, Altrincham (GB); and UNIVERSITY OF SOUTHAMPTON, Southampton (GB)
PCT Filed Aug. 25, 2020, PCT No. PCT/EP2020/073756
§ 371(c)(1), (2) Date Feb. 25, 2022,
PCT Pub. No. WO2021/037853, PCT Pub. Date Mar. 4, 2021.
Claims priority of provisional application 62/933,286, filed on Nov. 8, 2019.
Claims priority of provisional application 62/891,878, filed on Aug. 26, 2019.
Prior Publication US 2022/0404650 A1, Dec. 22, 2022
Int. Cl. G02F 1/025 (2006.01); G02F 1/01 (2006.01)
CPC G02F 1/025 (2013.01) [G02F 1/0147 (2013.01); G02F 2202/06 (2013.01); G02F 2203/15 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An optical modulator, comprising:
a micro-ring resonator; and
a bus waveguide, including an input waveguide region, an output waveguide region, and a coupling waveguide region optically coupled to the micro-ring resonator and located between the input waveguide region and the output waveguide region,
wherein the micro-ring resonator includes a modulation region, the modulation region being formed of a silicon portion and a III-V semiconductor portion separated by a crystalline rare earth oxide dielectric layer.