Low-Loss and Low-Nonlinearity Pure-Silica-Core Fiber for C- and L-band Broadband Transmission
Low-Loss and Low-Nonlinearity Pure-Silica-Core Fiber for C- and L-band Broadband Transmission
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DOI：
10.1109/jlt.2015.2476837
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发表时间：
2016-01
影响因子：
4.7
通讯作者：
Yoshinori Yamamoto;Y. Kawaguchi;M. Hirano
中科院分区：
文献类型：
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作者：
Yoshinori Yamamoto;Y. Kawaguchi;M. Hirano
为了提高系统的光信噪比，超长距离、大容量的数字相干传输系统（如越洋通信系统）需要低损耗、低非线性的光纤。为了满足这一需求，我们研制了一种损耗为0.15dB/km、有效面积为130 μm2的纯硅芯光纤（PSCF-130）。近来，已经积极地研究了除了C波段之外还利用L波段的传输系统，以进一步扩大通过光纤的传输容量。然而，在这样的系统中，一个问题是由大Aeff光纤的宏观和/或微观弯曲损耗引起的损耗增加。在本文中，我们从实验和理论上表明，PSCF-130具有足够低的宏观和微观弯曲损耗，即使在L波段。PSCF-130还具有高光纤品质因数，因为在C和L波段具有超低损耗和大Aeff。从这些结果来看，PSCF-130适用于C和L波段宽带传输，并将具有较高的传输性能。
In order to improve system optical signal-to-noise ratio, low-loss and low-nonlinearity fibers are demanded for ultra-long-haul and high-capacity digital coherent transmission systems, such as transoceanic systems. In order to meet the demand, we have realized a pure-silica-core fiber with ultra-low loss of 0.15 dB/km and large effective area (Aeff) of 130 μm2 (PSCF-130). Recently, transmission systems utilizing the L-band in addition to the C-band have been actively studied to further expand transmission capacity through a fiber. In such systems, however, one concern is loss increase resulting from macro- and/or micro-bending losses of large Aeff fiber. In this paper, we show experimentally and theoretically that PSCF-130 has sufficiently low macro- and micro-bending losses even in the L-band. PSCF-130 also has high-fiber figure-of-merit because of ultra-low loss and large Aeff in the C- and L-bands. From these results, PSCF-130 is applicable for C- and L-band broadband transmission and will have high transmission performance.