Design of Single-Polarization Single-Mode Photonic Crystal Fiber

Single-polarization single-mode (SPSM) micro structured polymer optical fiber (MPOF) is designed based on polymethyl methacrylate (PMMA) . A full vector finite element method together with beam propagation method are adopted to study the properties of SPSM. By optimization designing, we found that only one polarization state of the fundamental mode can be transmitted within the visible light region from 0.61μm to 0.74μm because of the different cutoff wavelength for two orthogonal polarization modes. For MPOF with 15 rings of hexagonally arrayed air-holes, the confinement loss of 0.084 dB/ m is obtained at the 0.65μm. This low loss SPSM-MPOF can greatly eliminate the polarization crosstalk and polarization mode dispersion.