公开(公告)号：US20240295763A1

公开(公告)日：2024-09-05

申请号：US18515795

申请日：2023-11-21

Applicant: Meta Platforms Technologies, LLC

Inventor： Kenneth Alexander Diest ,  Spencer Allan Wells ,  Zhaohui Yang ,  Nihar Ranjan Mohanty ,  Richard Farrell ,  Jilin Yang ,  Ehsan Arbabi

IPC: G02F1/05 ,  C03C17/23 ,  C30B29/30 ,  C30B29/32 ,  G02B6/34 ,  G03F7/00

CPC classification number: G02F1/05 ,  C03C17/23 ,  C30B29/30 ,  C30B29/32 ,  G02B6/34 ,  G03F7/0002 ,  G03F7/0005 ,  C03C2217/228 ,  C03C2217/23 ,  C03C2217/92

Abstract: A device includes a pair of electrodes and a dynamic material disposed between the pair of electrodes, the dynamic material including a crystalline microstructure configured to change between at least two states in response to a change in an electric field between the two electrodes. A material includes tetragonal lead magnesium niobate-lead titanate (PMN-PT) and at least one lanthanide series element. A method includes doping a lead magnesium niobate-lead titanate material with at least one lanthanide series element, and processing the PMN-PT material to form tetragonal PMN-PT. A further method includes forming a low refractive index nanostructured grating over a carrier substrate, forming a high refractive index layer over the low refractive index grating to produce a nanostructured coupling element, forming an adhesive layer over the nanostructured coupling element, and affixing the nanostructured coupling element to a high index waveguide.