All-fiber low-loss connector for accessing both close cores of twin-core fiber.
All-fiber low-loss connector for accessing both close cores of twin-core fiber.
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DOI：
10.1364/oe.20.004812
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发表时间：
2012-02
期刊：
影响因子：
3.8
通讯作者：
R. Zhao;L. Pei;T. Ning;Song Gao
中科院分区：
文献类型：
--
作者：
R. Zhao;L. Pei;T. Ning;Song Gao
提出了一种新颖的全光纤连接器，用于将双芯光纤（TCF）的每个芯同时连接到单芯光纤（SCF）芯，并且独立地访问TCF的两个靠近的芯。该连接器主要由两段共线四芯光纤（CFCF）级联而成。从TCF发射的两个近距离光场被分离成两个远距离光场，使得每个光场可以对接耦合到具有两个单模SCF尾纤的一个Gemini光纤段的芯中的一个。对于模拟的例子，两个光场的中心距离从16 μm增加到90 μm以上，串扰为-37dB，功率损耗为0.056dB。通过用开槽堆叠拉丝法制备CFCF和用火焰刷涂法制备带尾纤的Gemini光纤段的实验，部分验证了该方法的可行性。
A novel all-fiber connector is proposed for connecting each core of a twin-core fiber (TCF) to a single-core fiber (SCF) core simultaneously and accessing independently the both close cores of the TCF. The connector is mainly composed of two cascaded pieces of collinear four-core fiber (CFCF). The two close optical fields launched from the TCF are separated into two far apart optical fields, so that each optical field could be butt-coupled into one of the cores of one gemini fiber segment, which has two single-mode SCF pigtails. For the simulated example, the center distance of the two optical fields is increased from 16 μm to more than 90 μm, the cross-talk is -37 dB, and the power loss is 0.056 dB. The feasibility of the strategy is partially demonstrated experimentally by fabricating a CFCF by groove & stack & draw method and one gemini fiber segment with pigtails by flame-brushing technology.