We present a novel fast fabrication method for making optical waveguides by using a photoaligning and a liquid-crystal polymer. A difference in the refractive indices in the core and cladding regions is achieved by use of polarized UV light to align the polymer chains differently. A refractive-index difference of Delta n = 0.07 was achieved. The propagation loss in a channel waveguide is 4 dB/cm at a wavelength of 1.55 µm. The fabrication method has only a few processing steps and yields short fabrication times. The waveguide structures offer possibilities for generating devices with new applications related to the polarization of the guided light.
© 2005 Optical Society of America
(130.1750) Integrated optics : Components
(130.2790) Integrated optics : Guided waves
(130.3060) Integrated optics : Infrared
(130.3120) Integrated optics : Integrated optics devices
(130.3130) Integrated optics : Integrated optics materials
Andrin Stump, Ulrich Gubler, and Christian Bosshard, "Optical waveguides structured with photoaligning polymers," Opt. Lett. 30, 1333-1335 (2005)