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Design of a compact polarization splitter based on the dual-elliptical-core photonic crystal fiber |
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| Affiliation: | 1. The Photovoltaic and Semiconductor Materials Laboratory, El-Manar University-ENIT, P. O. Box 37, Le Belvedere, 1002 Tunis, Tunisia;2. Department of Engineering Physics, Polytechnique Montreal, Montreal, Quebec H3T 1J4, Canada;1. School of Science, Hunan University of Technology, Zhuzhou 412007, PR China;2. College of Data Science, Jiaxing University, Jiaxing 314001, PR China;3. Northwest Institute of Nuclear Technology, Xi’an, Shaanxi 710024, PR China;4. College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha Hunan 410073, PR China;5. Hebei Key Lab of Optic-electronic Information and Materials, The College of Physics Science and Technology, Hebei University, Baoding 071002, PR China |
| Abstract: | We propose a compact polarization splitter based on dual-elliptical-core photonic crystal fiber. Two elliptical cores are introduced to increase the difference of effective index between x-polarized and y-polarized mode and three elliptical modulation air holes are used to control the power transfer between the two cores. By optimizing the structure parameters, the length of the polarization splitter is distinctly shortened. Numerical results demonstrate that the compact splitter has the length of 775 μm and up to 50 dB extinction ratio at the central wavelength of 1.55 μm. The corresponding bandwidth of 32 nm could be achieved from the wavelength of 1.534–1.566 μm with the extinction ratio over 20 dB |
| Keywords: | Photonic crystal fiber Polarization splitter Elliptical core |
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