Abstract: This invention relates to a method of preparing a planar optical waveguide assembly comprising the steps of: (i) applying a curable silicone composition to a surface of a substrate to form a film; (ii) exposing the product of step (i) to ultraviolet light to form a lower clad layer; (iii) applying a photo sensitive composition on top of the lower clad layer to form a core layer on top of the lower clad layer, wherein the photo sensitive composition comprises: (A) a siloxane resin composition comprising 0 to 95 mole present of R1SiO3/2 siloxane units, 0 to 95 mole percent of R2SiO3/2 siloxane units, and 1 to 99.

Abstract: A curable composition comprises a cationic polymerizable material. The curable composition further comprises a diluent component comprising a silane compound having a single silicon-bonded cationic polymerizable group. A method of forming a cured article with the curable composition is also disclosed. The method comprises applying the curable composition on a substrate to form a film. The method further comprises curing the film on the substrate to form the cured article. The present invention also provides the cured article formed in accordance with the method.

Abstract: A curable composition comprises a cationic polymerizable material. The curable composition further comprises a diluent component comprising a silane compound having a single silicon-bonded cationic polymerizable group. A method of forming a cured article with the curable composition is also disclosed. The method comprises applying the curable composition on a substrate to form a film. The method further comprises curing the film on the substrate to form the cured article. The present invention also provides the cured article formed in accordance with the method.

Abstract: A method of preparing an article comprises applying a first composition having a first refractive index R11 on a substrate to form a first layer (14). The method further comprises applying a curing condition to a target portion (18) of the first layer, without applying the curing condition to a non-target portion (16), to form a contrast layer including at least one cured portion and at least one uncured portion. In addition, the method comprises applying a second composition having a second refractive index R12 on the contrast layer to form a second layer, wherein a portion of the second layer and the at least one uncured portion of the contrast layer intermix to form at least one intermixed portion having a third refractive index R13.