Abstract
An asymmetric dual-core photonic crystal fiber (ADC-PCF) wavelength-selective polarization splitter is reported and analyzed. The left core of the DC-PCF is surrounded by nematic liquid crystal infiltrated holes in order to control the wavelength at which coupling occurs between the dual cores of the proposed design. Moreover, the suggested structure can be tuned to split out the x- and y-polarized modes at the two telecommunication wavelengths λ=1.3 μm and λ=1.55 μm. The geometrical parameters of the reported splitter are studied by the full vectorial finite difference method via the Lumerical software package to achieve high wavelength selectivity with device length of 5.678 mm at λ=1.3 μm. Further, the power coupling characteristics of the reported device are studied, which ensures that the ADC-PCF splitter has a very narrow bandwidth of approximately 3 nm around wavelengths of 1.3 μm and 1.55 μm. Therefore, the suggested design can be considered as a very good candidate to be used in the integrated photonic devices.
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