High refractive index nanoimprintable resin for optical waveguide applications
AssigneeMicrosoft Technology Licensing, LLC
InventorsAtul Bhaskar Chaudhari, Klaus Henrik Valtteri Kalima, Mervi Kaarina Ylä-Jarkko, Pasi Petteri Heinonen
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Abstract
Disclosed is a nanoimprintable resin for use in optical waveguide applications. The nanoimprintable resin includes a base resin, metal oxide nanoparticles, and a photoinitiator. A cured film of the nanoimprintable resin exhibits a refractive index greater than or equal to 1.8 (589 nm), such as 1.9 (599 nm), according to ASTM D1218-21 at 25° C.
Claims21
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.
A photocurable nanoimprintable resin for an optical waveguide, comprising:
- (a) a base resin included at 9% to 30% by weight of the photocurable nanoimprintable resin, the base resin comprising
- (i) a set of crosslinker compounds comprising both a di(meth)acrylate crosslinker and a tri(meth)acrylate crosslinker,
- (ii) one or more optical dopants, and
- (iii) one or more diluents;
- (b) metal oxide nanoparticles dispersed within the base resin and included at 60% to 85% by weight of the photocurable nanoimprintable resin, the metal oxide nanoparticles comprising (meth)acrylate functionality to enable crosslinking with the one or more crosslinker compounds of the base resin;
- (c) a photoinitiator;
- and
- (d) a solvent included at 10% to 25% by weight of the photocurable nanoimprintable resin,
- wherein the nanoimprintable resin, when cured, exhibits a refractive index greater than or equal to 1.9 (589 nm) according to ASTM D1218-21 at 25° C.
A nanoimprintable resin for an optical waveguide, manufactured by a process comprising:
- (a) forming a base resin by mixing
- (i) one or more crosslinker compounds,
- (ii) one or more optical dopants, and
- (iii) one or more diluents;
- and
- (b) mixing the base resin with
- (i) a solvent,
- (ii) metal oxide nanoparticles functionalized to enable crosslinking with the one or more crosslinker compounds of the base resin, and
- (iii) a photoinitiator,
- 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.
Dependencies are inferred from the claim text.