Design of single-moded holey fibers with large-mode-area and low bending losses: the significance of the ring-core region.
Design of single-moded holey fibers with large-mode-area and low bending losses: the significance of the ring-core region.
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DOI：
10.1364/oe.15.001794
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发表时间：
2007-02
期刊：
影响因子：
3.8
通讯作者：
Y. Tsuchida;K. Saitoh;M. Koshiba
中科院分区：
文献类型：
--
作者：
Y. Tsuchida;K. Saitoh;M. Koshiba
光纤科学的主要趋势之一是能够获得具有大模场面积（LMA）的光纤，该光纤针对各种应用进行了优化，例如高功率传输、光纤放大器和光纤激光器。为了确保高光束质量和光纤材料中损伤阈值的最终可控性，需要具有LMA特性，当然还需要以单模方式工作。虽然传统光纤在同时提供LMA、单模操作以及低宏观弯曲损耗特性方面存在一些困难，但全二氧化硅多孔光纤是实现具有低弯曲损耗的LMA单模光纤的高度有吸引力的候选者。在本文中，我们提出了一种新型的有效单模多孔光纤的有效模式面积约为1400妈妈（2），小的允许弯曲半径小到5厘米，良好的光束质量因子为1.15，高限制损耗超过1分贝/米的高阶模在1.064妈妈波长。
One of the major trends in optical fiber science is to be able to obtain fibers with large-mode-area (LMA), optimized for various applications such as high power delivery, fiber amplifiers, and fiber lasers. In order to ensure the high beam quality and the ultimate controllability of the damage threshold in the fiber's material, it is required to have a LMA property and of course to operate in a single mode fashion. While the conventional fibers have some difficulties in providing simultaneously LMA, single mode operation, as well as low macro-bending loss characteristics, all-silica holey fibers are highly attractive candidates for realizing LMA single-mode fibers with low bending losses. In this paper, we present a novel type of effectively single-mode holey fibers with effective mode area of about 1400 mum(2), small allowable bending radius as small as 5 cm, good beam quality factor of 1.15, and high confinement losses exceeding 1 dB/m for the higher-order mode at 1.064-mum wavelength.