We report the preparation and characterization of novel isotropic polymer s
lab waveguides made by photochemical crosslinking, and their integration wi
th a ferroelectric liquid crystal in an integrated electro-optic modulator.
The refractive index of the passive copolymer material in the device was c
ontrolled by the copolymer composition, and good agreement between measured
and calculated effective indices for the guided modes of polymer films was
obtained. The active ferroelectric liquid crystal exhibited a refractive i
ndex change of Deltan approximate to0.10 upon application of an ac voltage
of +/- 30 V, giving an electro-optic modulation of the input TE0-mode with
a contrast ratio of 11:1 and only a small polarization conversion into TM o
utput light. (C) 2001 Society of Photo-Optical Instrumentation Engineers.