Mode-coupling analysis and trench design for large-mode-area low-cross-talk multicore fiber.
Mode-coupling analysis and trench design for large-mode-area low-cross-talk multicore fiber.
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DOI：
10.1364/ao.52.004541
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发表时间：
2013-07
期刊：
影响因子：
1.9
通讯作者：
Siwen Zheng;G. Ren;Zhen Lin;S. Jian
中科院分区：
文献类型：
--
作者：
Siwen Zheng;G. Ren;Zhen Lin;S. Jian
提出了具有相同芯数的七芯多芯光纤模式耦合动力学的完整解析解。研究了相邻岩心和非相邻岩心的耦合系数C（mn）随结构参数的变化规律。结果表明，通过调整结构参数可以减小耦合系数。此外，沟槽辅助结构可用于抑制MCF串扰，在不降低串扰性能的情况下可以扩大有效面积A（eff）。仿真结果表明，通过调整沟槽参数可以实现低串扰和/或大A（eff）。在沟槽辅助MCF （TA-MCF）中利用小沟槽（小沟槽宽度c，小折射率差Δ（沟槽））可以获得大模面积，而在TA-MCF中利用大沟槽（大沟槽宽度c，大Δ（沟槽））可以实现低串扰。
The complete analytical solutions of the mode-coupling dynamics for seven-core multicore fibers (MCFs) with identical cores is proposed. All the coupling coefficients C(mn) of adjacent cores and nonadjacent cores as a function of the structural parameters are investigated. It is shown that the coupling coefficients can decrease by adjusting the structural parameters. In addition, the trench-assisted structure could be used for suppressing cross talk in MCF, and the effective area A(eff) can be enlarged without degrading the crosstalk properties. Simulations suggest that low cross talk and/or large A(eff) could be achieved by adjusting the trench parameters. Large mode area could be obtained by utilizing small trench (small trench width c, small refractive index difference Δ(trench)) in the trench-assisted MCF (TA-MCF), whereas low cross talk could be achieved by utilizing larger trench (large trench width c, large Δ(trench)) in the TA-MCF.