In this paper, polarization properties and propagation characteristics of polymer photonic crystal fibres with elliptical core and non-hexagonal symmetry structure are investigated by using the full vectorial plane wa...In this paper, polarization properties and propagation characteristics of polymer photonic crystal fibres with elliptical core and non-hexagonal symmetry structure are investigated by using the full vectorial plane wave method. The results show that the birefringence of the fibre is induced by asymmetries of both the cladding and the core. Moreover, by adjusting the non-symmetrical ratio factor of cladding η from 0.4 to 1 in step 0.1, we find the optimized design parameters of the fibre with high birefringence and limited polarization mode dispersion, operating in a single mode regime at an appropriate wavelength range. The range of wavelength approaches the visible and near-infrared which is consistent with the communication windows of polymer optical fibres.展开更多
Using the full-vector plane-wave expansion method, a kind of PMMA-based polarization-maintaining microstructured optical fibre （PM-mPOF） is theoretically studied. Dependence of the cutoff wavelengths of the two orth...Using the full-vector plane-wave expansion method, a kind of PMMA-based polarization-maintaining microstructured optical fibre （PM-mPOF） is theoretically studied. Dependence of the cutoff wavelengths of the two orthogonal polarization states （polarized along the two principal axes of PM-mPOF） on the structure parameters of the fibre is investigated in detail A single-polarization single-mode （SPSM） PM-mPOF working in the visible region is designed and optimized with the result of the maximum SPSM bandwidth of 140nm.展开更多
A kind of microstructured polymer optical fiber with elliptical core has been fabricated by adopting insitu chemical polymerization technology and the secondary sleeving draw-stretching technique. Microscope photograp...A kind of microstructured polymer optical fiber with elliptical core has been fabricated by adopting insitu chemical polymerization technology and the secondary sleeving draw-stretching technique. Microscope photography demonstrates the clear hole-structure retained in the fiber. Though the holes distortion is visible, initial laser experiment indicates that light can be strongly confined in the elliptical core region, and the mode field is split obviously and presents the multi-mode characteristic. Numerical modeling is carried out for the real fiber with the measured parameters, including the external diameter of 150 μm, the average holes diameter of 3.3 μm, and the average hole spacing of 6.3 μm by using full-vector plane wave method. The guided mode fields of the numerical simulation are consistent with the experiment result. This fiber shows the strong multi-mode and weak birefringence in the visible and near-infrared band, and has possibility for achieving the fiber mode convertors, mode selective couplers and so on.展开更多
基金Project supported by National Nature Science Foundation of China （Grant No 60437020） and the Science and Technology Plan Project of Shannxi Province （Grant No 2004K05-G47）.
文摘In this paper, polarization properties and propagation characteristics of polymer photonic crystal fibres with elliptical core and non-hexagonal symmetry structure are investigated by using the full vectorial plane wave method. The results show that the birefringence of the fibre is induced by asymmetries of both the cladding and the core. Moreover, by adjusting the non-symmetrical ratio factor of cladding η from 0.4 to 1 in step 0.1, we find the optimized design parameters of the fibre with high birefringence and limited polarization mode dispersion, operating in a single mode regime at an appropriate wavelength range. The range of wavelength approaches the visible and near-infrared which is consistent with the communication windows of polymer optical fibres.
基金Supported by the National Natural Science Foundation of China under Grant Nos 60537060 and 60678023, and the Director Foundation of Xi＇an Institute of 0ptics and Precision Mechanics of Chinese Academy of Sciences under Grant No 0654221ZZ0.
文摘Using the full-vector plane-wave expansion method, a kind of PMMA-based polarization-maintaining microstructured optical fibre （PM-mPOF） is theoretically studied. Dependence of the cutoff wavelengths of the two orthogonal polarization states （polarized along the two principal axes of PM-mPOF） on the structure parameters of the fibre is investigated in detail A single-polarization single-mode （SPSM） PM-mPOF working in the visible region is designed and optimized with the result of the maximum SPSM bandwidth of 140nm.
基金This work was supported by the National Natural Science Foundation of China under Grant No.60437020.
文摘A kind of microstructured polymer optical fiber with elliptical core has been fabricated by adopting insitu chemical polymerization technology and the secondary sleeving draw-stretching technique. Microscope photography demonstrates the clear hole-structure retained in the fiber. Though the holes distortion is visible, initial laser experiment indicates that light can be strongly confined in the elliptical core region, and the mode field is split obviously and presents the multi-mode characteristic. Numerical modeling is carried out for the real fiber with the measured parameters, including the external diameter of 150 μm, the average holes diameter of 3.3 μm, and the average hole spacing of 6.3 μm by using full-vector plane wave method. The guided mode fields of the numerical simulation are consistent with the experiment result. This fiber shows the strong multi-mode and weak birefringence in the visible and near-infrared band, and has possibility for achieving the fiber mode convertors, mode selective couplers and so on.
