US 12,140,799 B2
Electro-optical device with ring resonator
Patrick Le Maitre, Biviers (FR); and Nicolas Michit, Grenoble (FR)
Assigned to STMicroelectronics (Crolles 2) SAS, Crolles (FR)
Filed by STMicroelectronics (Crolles 2) SAS, Crolles (FR)
Filed on Sep. 15, 2021, as Appl. No. 17/476,152.
Application 17/476,152 is a continuation of application No. 16/702,960, filed on Dec. 4, 2019, granted, now 11,125,946.
Claims priority of application No. 1873574 (FR), filed on Dec. 20, 2018.
Prior Publication US 2022/0003932 A1, Jan. 6, 2022
Int. Cl. G02B 6/293 (2006.01); G02B 6/12 (2006.01); G02F 1/225 (2006.01)
CPC G02B 6/2934 (2013.01) [G02B 6/12007 (2013.01); G02F 1/225 (2013.01); G02B 2006/12061 (2013.01); G02F 2203/15 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A ring resonator electro-optical device comprising:
a first annular silicon waveguide comprising a first annular silicon strip; and
a second silicon waveguide located at a same level of the device as the first annular silicon waveguide and comprises a second silicon strip arranged at a distance from the first annular silicon strip, wherein a first lateral edge of the second silicon strip is bordered by a first silicon slab and a second lateral edge of the second silicon strip is bordered by a second silicon slab.