首页|Design of ring-sector-assisted PANDA ring-core few mode fiber
Design of ring-sector-assisted PANDA ring-core few mode fiber
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For the PANDA ring-core polarization-maintaining few-mode fiber(RC-PM-FMF)with the given supported eigen-modes,the minimum effective refractive index difference min(Δneff)between the adjacent eigenmodes decreases with the RC size.Consequently,we propose a PANDA RC-PM-FMF assisted by a ring-sector(RS)structure,which can be used to mainly increase the Δnef values between the adjacent even and odd eigenmodes with the same polarization.The RS-RC-PM-FMF with an appropriate choice of the parameters can support 10 linearly polarized(LP)eigenmodes,which have min(Δneff)values higher than 1.9×10-4 for the adjacent eigenmodes over the whole C+L band.Further-more,the fiber is characterized by the low group velocity dispersion(GVD)(-40-20 ps-nm-1-km-1)and effective mode areas(63-104 pm2),while the total losses are within the range of 0.19-0.23 dB/km over the whole band.
DU Zhiyong、WANG Chuncan、LI Peixin、PEI Li、ZHENG Jingjing、NING Tigang
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Key Laboratory of All Optical Network and Advanced Telecommunication Network,Ministry of Education,Institute of Lightwave Technology,Beijing Jiaotong University,Beijing 100044,China
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