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An in-fiber integrated multifunctional mode converter

机译:光纤集成多功能模式转换器

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摘要

We propose a technique of designing a sandwich scheme of in-fiber integrated multifunctional mode converter which can be used to configure and match different mode fields between various specialty fibers and a conventional single-mode fiber with high mode transfer efficiency. In this technique, a double-clad fiber is introduced between the fibers, thus matching refractive index profiles could be implemented by thermal diffusion. Compared with previous mode converters, the proposed solution can be used not only as a Gaussian beam expander/compressor, but also as a mode converter to transfer a Gaussian mode to a ring mode, and as a fan-in/out adapter to convert one Gaussian mode to multiple Gaussian modes. This scheme is able to produce a stable and compact device which is more efficient in coupling and more flexible for new fiber lasers. In addition, the excellent performance of the proposed technique enables its usefulness of making other optical devices, such as optical coupler, optical connector, and optical interferometer.
机译:我们提出了一种设计光纤内集成多功能模式转换器的三明治方案的技术,该技术可用于配置和匹配各种专用光纤与常规单模光纤之间具有高模式传输效率的不同模式场。在该技术中,在纤维之间引入了双包层光纤,因此可以通过热扩散实现匹配的折射率分布。与以前的模式转换器相比,提出的解决方案不仅可以用作高斯光束扩展器/压缩器,还可以用作将高斯模式转换为环形模式的模式转换器,以及用作将一个高斯模式转换为环形模式的扇入/输出适配器高斯模式到多个高斯模式。该方案能够产生稳定且紧凑的设备,其对于新的光纤激光器而言耦合效率更高并且更加灵活。另外,所提出的技术的优异性能使其能够用于制造其他光学器件,例如光学耦合器,光学连接器和光学干涉仪。

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