1. Low crosstalk and large effective mode field area heterogeneous 13-core 6-mode fiber with double high refractive index rings.
- Author
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Shao, Pengshuai, Li, Shuguang, Meng, Xiaojian, Guo, Ying, Wang, Luyao, Li, Zenghui, Ma, Liling, Li, Jianshe, Cheng, Tonglei, Xu, Weiwei, Qin, Yu, and Zhou, Hui
- Subjects
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REFRACTIVE index , *FORWARD error correction , *FIBERS - Abstract
We propose a heterogeneous thirteen-core few-mode fiber, which has the excellent characteristics of low crosstalk (XT), large effective mode field area (A e f f) and low dispersion slope (D s l o p e). The double high refractive index ring can precisely control the effective refractive index difference between the LP mode in the core and reduce intra-core XT. The relative spatial efficiency (RSE) of the 13-core 6-mode fiber reaches 33.84, and the number of spatial channels is as high as 130. The inter-core crosstalk is less than −60 dB/km at 1550 nm. The results show that the proposed fiber with low crosstalk and large A e f f is sufficient to satisfy the requirements of long-distance transmission in the future. • A heterogeneous 13-core 6-mode fiber is proposed to reduce inter-core crosstalk while enhancing bending resistance. • Heterogeneous core arrangement can increase the propagation constant difference between adjacent cores. • The maximum differential mode delay for the highest order mode (LP 12) and LP 01 mode is 28 ps/m. • The number of spatial channels of 13-core 6-mode fiber based on space division multiplexing is as high as 130. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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