A novel ultra-high tunable photonic crystal fiber (PCF) polarization filter is proposed and analyzed using finite element method. The suggested design has a central hole infiltrated with a nematic liquid crystal (NLC) that offers high tunability with temperature and external electric field. Moreover, the PCF is selectively filled with metal wires into cladding air holes. Results show that the resonance losses and wavelengths are different in x and y polarized directions depending on the rotation angle phi of the NLC. The reported filter of compact device length 0.5 mm can achieve 600 dB/cm resonance losses at phi = 90 degrees for x-polarized mode at communication wavelength of 1300 mm with low losses of 0.00751 dB /cm for y-polarized mode. However, resonance losses of 157.71 dB /cm at phi = 0 degrees can be achieved for y-polarized mode at the same wavelength with low losses of 0.092 dB/cm for x-polarized mode. (C) 2015 Optical Society of America
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