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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 8 — Apr. 11, 2011
  • pp: 7553–7558

Polarization rotators fabricated by thermally-switched liquid crystal alignments based on rubbed poly(N-vinyl carbazole) films

Yuan-Di Chen, Ko-Ting Cheng, Cheng-Kai Liu, and Andy Ying-Guey Fuh  »View Author Affiliations


Optics Express, Vol. 19, Issue 8, pp. 7553-7558 (2011)
http://dx.doi.org/10.1364/OE.19.007553


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Abstract

This paper demonstrates the thermally-switched liquid crystal (LC) alignments based on a rubbed poly(N-vinyl carbazole) (PVK) film, and their application for polarization rotators. The mechanically rubbed PVK layer can induce a planar alignment of LCs with their director axis perpendicular to the direction of rubbing. This direction can be switched toward the rubbing direction by thermal treatment. Experimentally, the angle of re-orientation of the director axis increases with the temperature in a specific range of temperatures. In this study, the optical properties of linear and concentric polarization rotators, fabricated using a rubbed PVK film with thermal treatment, are examined.

© 2011 OSA

OCIS Codes
(160.3710) Materials : Liquid crystals
(230.0230) Optical devices : Optical devices

ToC Category:
Optical Devices

History
Original Manuscript: December 14, 2010
Revised Manuscript: March 25, 2011
Manuscript Accepted: March 28, 2011
Published: April 5, 2011

Citation
Yuan-Di Chen, Ko-Ting Cheng, Cheng-Kai Liu, and Andy Ying-Guey Fuh, "Polarization rotators fabricated by thermally-switched liquid crystal alignments based on rubbed poly(N-vinyl carbazole) films," Opt. Express 19, 7553-7558 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-8-7553


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