Patent ID: 7663160
Filing Date: 2010-02-16
Classification: G02B,H01L

Abstract:
1. A photodetector comprising a photodiode formed in a semiconductor substrate and a waveguide element formed of a block of a high-index material extending vertically above the photodiode in a thick layer of a dielectric superposed to the substrate, the thick layer being at least as a majority formed of silicon oxide and the block being formed of a polymer having the general formula R 1 R 2 R 3 SiOSiR 1 R 2 R 3 where R 1 , R 2 , and R 3 are any carbonaceous or metal substituents and where one of R 1 , R 2 , or R 3 is a carbonaceous substituent having at least four carbon atoms and/or at least one oxygen atom.