概括
研究人员开发了一种新的少数模式纤维 (FMF) 设计,用于合双圆形形模式选择性合器 (FBT-MSC). 这项创新克服了传输高阶模式的挑战,为空间划分多重复合系统提供了超低损失的性能.
科学领域:
- 光学工程是指光学工程.
- 电信 电信服务 电信服务 电信服务
- 材料科学 材料科学 材料科学
背景情况:
- 为高阶模式实现低损耗的合双形形模式选择性合器 (FBT-MSC) 是一个重大挑战,原因是严格的增压传输条件.
- 这种困难源于少数模式纤维 (FMF) 固态场直径的快速变化,这是由于核心-覆盖直径的巨大差异造成的.
研究的目的:
- 为了解决阻碍FBT-MSC中高阶模式传输的亚亚巴特困境.
- 开发一个优化的FMF,适合制造高性能FBT-MSC.
- 确保与现有的光纤基础设施兼容,以便广泛采用.
主要方法:
- 在FMF结构中引入了正指数的内.
- 优化了FMF设计,以改善高阶模式的adiabatic特性.
- 制造的超低损耗5-LP (五个线性偏振) 模式选择性合器使用优化的FMF.
主要成果:
- 经过优化后的FMF表现出了优异的adiabatic高阶模式特性.
- 已制造的MSC在多个LP模式下表现出极低的插入损失 (例如,在1553nm的LP11中为0.02dB).
- 在所有测试模式中,实现了宽波长操作,在1465-1639nm范围内额外损失<0.20dB,并且在所有测试模式中,90%的转换带宽超过68nm.
结论:
- 在FMF中引入正指数内是一种有效的策略,可以克服FBT-MSC中高级模式的adiabatic挑战.
- 开发的FMF可以制造超低损耗的MSC,在广泛的波长范围内具有出色的性能.
- 使用商业设备的标准化,快速的制造过程 (15分钟) 使这些MSC在空间分割多重复合系统中具有成本效益,批量生产.
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