Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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Polarization Converting Waveguide Devices Incorporating UV-curable Reactive Mesogen

  • Chu, Woo-Sung (School of Electrical Engineering and Graduate School of Cogno-Mechatronics Engineering, Pusan National University) ;
  • Kim, Sung-Moon (School of Electrical Engineering and Graduate School of Cogno-Mechatronics Engineering, Pusan National University) ;
  • Kim, Jun-Whee (School of Electrical Engineering and Graduate School of Cogno-Mechatronics Engineering, Pusan National University) ;
  • Kim, Kyung-Jo (School of Electrical Engineering and Graduate School of Cogno-Mechatronics Engineering, Pusan National University) ;
  • Oh, Min-Cheol (School of Electrical Engineering and Graduate School of Cogno-Mechatronics Engineering, Pusan National University)
  • Received : 2011.07.05
  • Accepted : 2011.08.16
  • Published : 2011.09.25
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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 $4.5^{\circ}$ for a temperature change from 25 to $100^{\circ}C$.

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References

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