Design of ring-sector-assisted PANDA ring-core few mode fiber

Zhiyong Du , Chuncan Wang , Peixin Li , Li Pei , Jingjing Zheng , Tigang Ning

Optoelectronics Letters ›› 2022, Vol. 18 ›› Issue (6) : 366 -371.

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Optoelectronics Letters ›› 2022, Vol. 18 ›› Issue (6) : 366 -371. DOI: 10.1007/s11801-022-1161-3
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Design of ring-sector-assisted PANDA ring-core few mode fiber

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Abstract

For the PANDA ring-core polarization-maintaining few-mode fiber (RC-PM-FMF) with the given supported eigenmodes, 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 Δneff 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. Furthermore, the fiber is characterized by the low group velocity dispersion (GVD) (−40–20 ps·nm−1·km−1) and effective mode areas (63–104 µm2), while the total losses are within the range of 0.19–0.23 dB/km over the whole band.

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Zhiyong Du, Chuncan Wang, Peixin Li, Li Pei, Jingjing Zheng, Tigang Ning. Design of ring-sector-assisted PANDA ring-core few mode fiber. Optoelectronics Letters, 2022, 18(6): 366-371 DOI:10.1007/s11801-022-1161-3

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