Design of polarization-maintaining bow-tie elliptical-core few-mode fiber for mode-division-multiplexing

Ci Yingjuan; Ren Fang; Zhang Jinyu; Niu Jingjing; Lei Xiao; Zhang Yanfei; Wang Xiaohui

doi:10.11884/HPLPB202234.220105

Volume 34 Issue 11

Sep. 2022

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Ci Yingjuan, Ren Fang, Zhang Jinyu, et al. Design of polarization-maintaining bow-tie elliptical-core few-mode fiber for mode-division-multiplexing[J]. High Power Laser and Particle Beams, 2022, 34: 111006. doi: 10.11884/HPLPB202234.220105

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Ci Yingjuan, Ren Fang, Zhang Jinyu, et al. Design of polarization-maintaining bow-tie elliptical-core few-mode fiber for mode-division-multiplexing[J]. High Power Laser and Particle Beams, 2022, 34: 111006. doi: 10.11884/HPLPB202234.220105

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Design of polarization-maintaining bow-tie elliptical-core few-mode fiber for mode-division-multiplexing

doi: 10.11884/HPLPB202234.220105

1.
School of Computer and Communication Engineering, University of Science and Technology Beijing, Beijing 100083, China
2.
Beijing Engineering and Technology Research Center for Convergence Network and Ubiquitous Service, Beijing 100083, China

Received Date: 2022-04-12
Accepted Date: 2022-06-23
Rev Recd Date: 2022-06-13

Available Online: 2022-06-27

Publish Date: 2022-09-20

Abstract

Abstract

We propose a weakly coupled polarization-maintaining few-mode fiber (PM-FMF) design with elliptical-core and bow-tie stress-applying areas. Using a high refractive index core, the proposed fiber can support 32 independent eigenmodes in the 1505−1585 nm band. The combination of the elliptical-core and bow-tie stress-applying area effectively separates the adjacent eigenmodes. The structural parameters of the elliptical-core and the bow-tie stress-applying area of the PM-FMF are optimized using the finite element method. The effects of fiber parameters on the number of modes, the minimum effective refractive index difference (Δn_eff_{, mim}) between modes, the mode birefringence B_m, the stress birefringence B_s, and the bending loss are evaluated. The bandwidth performance of the fiber is also analyzed, including the effective refractive index n_eff, Δn_eff and differential mode delay (DMD) between adjacent modes. The results indicate that 32 eigenmodes supported by the fiber are completely separated with Δn_eff_{, min} between adjacent modes larger than 1.295×10⁻⁴ in the 1505−1585 nm band. The fiber proposed can improve the transmission capacity and has potential applications in eigenmode multiplexing transmission.
- few-mode fiber,
- polarization-maintaining fiber,
- weakly coupled,
- mode division-multiplexing,
- birefringence

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References

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