Polarization beam splitter based on liquid-filled dual-core photonic crystal fiber with gold wire

A polarization beam splitter (PBS) based on a novel liquid-filled dual-core photonic crystal fiber (DC-PCF) is proposed. The effects of parameters of DC-PCF on performances of the PBS are investigated by beam propagation method (BPM). The numerical results demonstrate that the PBS possesses ultra-short length of 99 μm and high extinction ratio (ER) of −33.8 dB at the wavelength of 1.55 μm. Meanwhile, an ER better than -10 dB is achieved a bandwidth of 32 nm.