Open AccessPolarization filter characters of the gold-coated and the liquid filled photonic crystal fiber based on surface plasmon resonance
Author(s) -
Junjun Xue,
Shuguang Li,
Yuzhe Xiao,
Wei Qin,
Xujun Xin,
Xingye Zhu
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.013733
Subject(s) - materials science , photonic crystal fiber , surface plasmon resonance , optics , polarizing filter , polarization (electrochemistry) , resonance (particle physics) , refractive index , wavelength , photonic crystal , optical fiber , optoelectronics , optical filter , physics , nanoparticle , nanotechnology , chemistry , particle physics
The polarization filter characters of a gold-coated and liquid-filled photonic crystal fiber are studied using the finite element method. Results show that the resonance strength and wavelengths are different in two polarized directions. Filling liquid of refractive index n=1.33 (purified water) in holes in longitudinal direction can increase the loss of core mode polarized in the y-direction around the resonance peak. The resonance strength is much stronger in y-polarized direction than in x-polarized direction. The resonance strength can achieve 508dB/cm in y-polarized direction at the communication wavelength of 1311nm in one of our structures. Moreover, the full width half maximum is only 20nm. Such a small number makes such photonic crystal fibers promising candidate to filter devices. A liquid filled PCF of the small hole in the fiber core is designed and we find that filling liquid increases the resonance strength peak by thirty eight percent for the y-polarized resonance point.