Patent ID: 6853790

Claim:
An optical waveguide system or waveguide structure comprising at least (a) a first material selected from poly(perfluorocyclobutanes); which is in direct contact with (b) a second material selected from polycyanate resins (co)polymerized from at least one difunctional cyanate of formula (I); wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , and R 8 are independently selected from hydrogen, halogen, C 1 -C 10 alkyl groups, C 3 -C 8 cycloalkyl groups, C 1 -C 10 alkoxy groups, phenyl groups, and phenoxy groups; Z is selected from a chemical bond, SO 2 , CF 2 CH 2 , CHF, CH(CH 3 ), isopropylene, hexafluoroisopropylene, n-C 1 -C 10 alkylene groups (optionally substituted with at least one fluorine), iso-C 1 -C 10 alkylene groups (optionally substituted with at least one fluorine), O, NR 9 , N═N, CH═CH, C(O)O, CH═N, CH═N—N═CH, alkyloxyalkylene groups (having 1 to 8 carbon atoms), S, and Si(CH 3 ) 2 ; R 9 is selected from hydrogen and C 1 -C 10 alkyl groups; and wherein said at least one difunctional cyanate is substituted with at least one fluorine atom.