Title :
Analysis of Polarization Rotator Based on Nematic Liquid Crystal Photonic Crystal Fiber
Author :
Hameed, Mohamed Farhat O ; Obayya, Salah S A
Author_Institution :
Fac. of Adv. Technol., Univ. of Glamorgan, Pontypridd, UK
fDate :
3/1/2010 12:00:00 AM
Abstract :
In this paper, the performance of high-tunable polarization rotator (PR) based on nematic liquid crystal (NLC) photonic crystal fiber is reported. The tunability of the proposed PR results from the change of the optical properties of the NLC with the temperature and external electric field. The influence of the different structure geometrical parameters, rotation angle of the director of the NLC, temperature and operating wavelength on the PR performance is investigated. The numerical results reveal that the suggested PR can provide a strong polarization conversion ratio of 99.81% with a device length of 1072 ??m. It is expected that over the 1.53-1.6 ?? m wavelength range, polarization conversion would be more than 99%. The simulation results are evaluated using the full-vectorial finite-difference method and confirmed by the full-vectorial finite-difference beam-propagation method.
Keywords :
electro-optical effects; finite difference methods; holey fibres; nematic liquid crystals; optical fibre polarisation; optical glass; optical rotation; optical tuning; photonic crystals; thermo-optical effects; electric field effects; full-vectorial finite-difference beam-propagation method; full-vectorial finite-difference method; high-tunable polarization rotator; nematic liquid crystal photonic crystal fiber; optical properties; polarization conversion ratio; polarization rotation; size 1072 mum; soft glass; structure geometry; wavelength 1.53 mum to 1.6 mum; Beam propagation method (BPM); finite difference method (FDM); nematic liquid crystal (NLC); photonic crystal fibers (PCFs); polarization rotation; soft glass;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2010.2040581
