US 12,222,543 B2
High refractive index nanoimprintable resin for optical waveguide applications
Atul Bhaskar Chaudhari, Uusimaa (FI); Klaus Henrik Valtteri Kalima, Uusimaa (FI); Mervi Kaarina Ylä-Jarkko, Hämeenlinna (FI); and Pasi Petteri Heinonen, Uusimaa (FI)
Assigned to Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed by MICROSOFT TECHNOLOGY LICENSING, LLC, Redmond, WA (US)
Filed on Nov. 18, 2022, as Appl. No. 17/989,920.
Prior Publication US 2024/0168227 A1, May 23, 2024
Int. Cl. G02B 6/122 (2006.01); B82Y 20/00 (2011.01); G02B 6/12 (2006.01); G02B 6/134 (2006.01)
CPC G02B 6/1223 (2013.01) [G02B 6/1221 (2013.01); G02B 6/134 (2013.01); B82Y 20/00 (2013.01); G02B 2006/12035 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A nanoimprintable resin for an optical waveguide, comprising:
(a) a base resin comprising
(i) one or more crosslinker compounds,
(ii) one or more optical dopants, and
(iii) one or more diluents; and
(b) metal oxide nanoparticles dispersed within the base resin,
wherein the metal oxide nanoparticles are functionalized to enable crosslinking with the one or more crosslinker compounds of the base resin, and
wherein the nanoimprintable resin, when cured, exhibits a refractive index greater than or equal to 1.8 (589 nm) according to ASTM D1218-21 at 25° C.