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A new kind of single-polarization photonic crystal fiber(PCF) is proposed.Two kinds of multi-component glasses and the air are selected as working materials.Through using the full vector finite element method(FEM) and the perfectly matched layers(PML),the polarization-maintaining characteristic and the confinement loss of the fiber are analyzed,respectively.In addition,the single-polarization region of the fiber around 1.55 ìm is discussed.Numerical simulations show that the fiber maintains single-polarization operation within the wavelength range of 1.421-1.696μm.The birefringence can reach 6.988×10-3,and the confinement loss is as low as 0.012 dB/m when 7 layers of ring holes are arranged in the cladding at λ=1.55μm.
A new kind of single-polarization photonic crystal fiber (PCF) is proposed. Two kinds of multi-component glasses and the air are selected as working materials. Through using the full vector finite element method (FEM) and the perfectly matched layers (PML ), the polarization-maintaining characteristic and the confinement loss of the fiber are analyzed, respectively. In addition, the single-polarization region of the fiber around 1.55 μm is discussed. Numerical simulations show that the fiber maintains single-polarization operation within the wavelength range of 1.421-1.696 μm. The birefringence can reach 6.988 × 10 -3, and the confinement loss is as low as 0.012 dB / m when 7 layers of ring holes are arranged in the cladding at λ = 1.55 μm.