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Electrically tunable chiral nematic liquid crystal photonic crystal fibers

M. PETROV1,* , B. KATRANCHEV1, H. NARADIKIAN1, T. ANGELOV1, K. PANAJOTOV1, A. ZHELTIKOV2

Affiliation

  1. Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
  2. Physics Department, M. V. Lomonosov Moscow State University Moscow 119992, Russia

Abstract

Liquid crystal photonic crystal fibers (LC-PCFs) are a new class of optical waveguides. We found that chiral nematic liquid crystals, infiltrated in photonic crystal fibers, allow an effective electrical control of such optical waveguides. An optical method for measurement of the bandwidth of the reflection spectral band (expressing the bandgap of the LC-PCF) is presented. We succeeded in achieving an effective driving of the helix axis alignment at a diversity of electric field magnitudes and frequencies..

Keywords

Liquid crystals, Chirality, Photonic fibers.

Submitted at: Nov. 28, 2006
Accepted at: Feb. 15, 2007

Citation

M. PETROV, B. KATRANCHEV, H. NARADIKIAN, T. ANGELOV, K. PANAJOTOV, A. ZHELTIKOV, Electrically tunable chiral nematic liquid crystal photonic crystal fibers, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 2, pp. 446-448 (2007)