Ultra-short dual-core GaAs photonic crystal fiber splitter filled with nematic liquid crystal

Abstract. A simple nematic liquid crystal-filled dual-core photonic crystal fiber polarization beam splitter is designed and analyzed by the full-vector finite element method. The length of the polarization beam splitter is 13.3390  μm and the maximum extinction ratio (ER) is 143.49 dB. The bandwidth of ERs greater than 10 dB is 200 nm at a wavelength of 1.55  μm. This simple and easy-to-manufacture structure has great potential in miniaturized communication devices.

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