Abstract
Reactive mesogen (RM) is an organic liquid crystal molecule that can be
self-aligned to have an optic axis of birefringence when coated over a polyimide
alignment film. A free-standing optical wave-plate film consisting of RM and
low-loss optical polymers was fabricated in this work, and the film was inserted
across the polymer waveguide to form an integrated optical polarization converter.
For convenient evaluation of the polarization converters, a waveguide polarizer and
analyzer were fabricated in series. The polarization conversion efficiency was
measured to be 25 dB for the wavelength range from 1520 to 1580 nm. The wave plate
exhibited a temperature-dependent retardation of 4.5° for a temperature change from
25 to 100°C.
© 2011 Optical Society of Korea
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