Patent ID: 7551830

Claim:
An optical waveguide comprising: (A) a core having a core refractive index, and (B) a clad surrounding the core, where the clad has a clad refractive index smaller than the core refractive index; where the core comprises a reaction product of a curable silicone composition comprising (i) 100 parts by weight of a polydiorganosiloxane having an average of at least two terminally-unsaturated organic groups per molecule, (ii) an amount sufficient to cure the composition of a curing agent having an average of at least two silicon-bonded hydrogen atoms per molecule, (iii) an amount sufficient to catalyze curing the composition of a hydrosilylation catalyst, and (iv) an amount sufficient to impart impact resistance to a cured product of the curable silicone composition of a reinforcing filler; where the optical waveguide has a loss of 0.5 dB/cm or less.