کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1534871 | 1512608 | 2014 | 7 صفحه PDF | دانلود رایگان |
A novel multilayer-core intrinsically single-mode large-mode-area fiber is proposed in this paper. The multilayer structure in the core which is constituted of alternating low- and high-refractive index rings could achieve a very low equivalent core-cladding refractive index difference. The single-mode large mode area of 100–12,000 μm2 could be achieved in the fiber. The effective area Aeff can be further enlarged by increasing the parameters of low-refractive index rings or the number of layers. Furthermore, the bending property could be improved by 1–2 orders of magnitude in this multilayer-core structure when the outermost layer is depressed-index ring. We have experimentally verified the proposed fiber structure that follows the target of large Aeff along with ultra low bending loss at 1.55 μm. These characteristics of multilayer-core fiber suggest that it can be used in large-mode-area high-capacity transmission, or high-power optical fiber laser and amplifier in the optical communications.
Journal: Optics Communications - Volume 315, 15 March 2014, Pages 317–323