US 11,994,758 B1
Active photonic devices with enhanced pockels effect via isotope substitution
Gary Gibson, Palo Alto, CA (US)
Assigned to Psiquanum, Corp., Palo Alto, CA (US)
Filed by Psiquantum, Corp., Palo Alto, CA (US)
Filed on May 2, 2023, as Appl. No. 18/142,419.
Application 18/142,419 is a continuation of application No. 17/673,696, filed on Feb. 16, 2022, granted, now 11,675,221.
Application 17/673,696 is a continuation of application No. 16/903,285, filed on Jun. 16, 2020, granted, now 11,256,115, issued on Feb. 22, 2022.
Claims priority of provisional application 62/864,975, filed on Jun. 21, 2019.
Int. Cl. G02F 1/035 (2006.01); G02F 1/21 (2006.01); G02F 1/225 (2006.01)
CPC G02F 1/035 (2013.01) [G02F 1/225 (2013.01); G02F 1/212 (2021.01); G02F 2202/105 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An optical switch structure comprising:
a first electrical contact;
a second electrical contact;
doped semiconductor regions forming a p-n junction, the doped semiconductor regions disposed between the first electrical contact and the second electrical contact; and
a waveguide structure disposed between the first electrical contact and the second electrical contact, the waveguide structure comprising:
a waveguide core including a core material characterized by a first index of refraction; and
a planar waveguide cladding coupled to the waveguide core, the first electrical contact, and the second electrical contact, wherein the planar waveguide cladding includes a cladding material characterized by a second index of refraction less than the first index of refraction and an isotope-enhanced Pockels effect.