超连续生成带宽扩展和提高纯度在分级索引环芯纤维的超连续生成带宽和提高纯度
Qinru Peng1, Jian Yang2, Yiwen Zhang3
1School of Information and Communications Engineering, Xi'an Jiaotong University, Xi'an, 710049, China.
Scientific reports
|December 5, 2024
概括
本研究从数值上研究了等级指数环芯纤维 (GIRCF) 用于产生具有轨道角动量 (OAM) 模式的超连续 (SC). 优化的GIRCF设计实现了OAM模式生成的平面分散和广泛的光谱覆盖.
科学领域:
- 光纤通讯是指光纤通讯的一种方式.
- 光子学 是一个光子学.
- 材料科学 材料科学 材料科学
背景情况:
- 轨道角动量 (OAM) 模式为光纤提供了增强的数据容量.
- 超连续 (SC) 生产需要精确控制纤维分散性质.
- 环芯纤维 (RCF) 正在探索支持OAM模式,但在分散管理和模式纯度方面仍然存在挑战.
研究的目的:
- 以数值研究形状因子 (k) 对等级指数环芯纤维 (GIRCF) 模式特性的影响.
- 设计一个GIRCF,用于高效的超连续 (SC) 生产,携带轨道角动量 (OAM) 模式.
- 探索分级折射率 (RIP) 配置文件在优化OAM模式的RCF性能方面的作用.
主要方法:
- 进行了数值模拟,以分析形状因子 (k) 对GIRCF模式属性的影响.
- 设计了一个50mol%的Ge-doped GIRCF,其形状因数为2.
- 对于设计的GIRCF,评估了分散特征和SC生成.
主要成果:
- 设计的GIRCF表现出平面分散,从1090到2590nm之间略有变化 (<±30 ps/nm/km).
- 一个超级连续波长跨越了2305nm波长范围 (750到3055nm在-40dB) 被生成,携带OAM1,1模式.
- 经过分级折射率 (RIP) 档案被证明有助于平面,接近零的分散和减少旋转轨道合 (SOC).
结论:
- 形状因子和分级RIP是设计GIRCFs用于OAM携带SC生成的关键参数.
- 拟议的GIRCF设计可实现OAM模式的广泛光谱覆盖和高模式纯度.
- 分级RIP为优化RCF提供了一种新的方法,以支持强大的OAM模式传播和SC生成.
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