Waveguide devices with low loss clads and tunable refractive indices

1. An optical waveguide device comprising an electrode, and at least one polymer clad and a polymer core, wherein the polymer clad is located between the electrode and the polymer core; and wherein the polymer clad comprises a constitutional unit contributed by a monomer chosen from the group consisting of a halocatechol diacrylate, haloresorcinol diacrylate, and a halohydroquinone diacrylate;

wherein the polymer core is an electro-optic polymer;

wherein the monomer is chosen from the group consisting of

wherein X is a halogen; R 1 is independently at each occurrence a hydrogen, a halogen, a C 1 –C 6 alkyl group that can be further substituted with one or more halogens, or a phenyl group containing at least one halogen; and m=1–4;

wherein the polymer clad further comprises a constitutional unit that includes a charge transport moiety;

wherein the charge transport moiety comprises a hole transporter;

wherein the hole transporter includes a) an amine substituted with at least two aryl groups, wherein each aryl group may be further independently substituted with one or more halogens, alkyl, heteroalkyl, aryl, or heteroaryl groups; or b) a carbazole that may be further independently substituted with one or more halogens, alkyl, heteroalkyl, aryl, or heteroaryl groups, a diphenyl amine that may be farther independently substituted with one or more halogens, alkyl, heteroalkyl, aryl, or heteroaryl groups, a triphenyl amine that may be further independently substituted with one or more halogens, alkyl, heteroalkyl, aryl, or heteroaryl groups, or an tetraphenylbenzidine that may be further independently substituted with one or more halogens, alkyl, heteroalkyl, aryl, or heteroaryl groups.