Bending Effects of Thermally-Expanded-Core Fiber and Its Application as Variable Optical Attenuator
Bending Effects of Thermally-Expanded-Core Fiber and Its Application as Variable Optical Attenuator
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DOI：
10.1143/jjap.50.022501
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发表时间：
2011-02
影响因子：
1.5
通讯作者：
Hyungwoo Kwon;Jae-Won Song;K. T. Kim
中科院分区：
文献类型：
--
作者：
Hyungwoo Kwon;Jae-Won Song;K. T. Kim
本研究探讨了热膨胀芯（TEC）光纤作为在线可变光衰减器（VOA）的应用弯曲的影响。实验研究了TEC光纤的结构参数和包层周围介质的折射率对弯曲损耗的影响，给出了VOA的器件结构和制作工艺。通过TEC光纤的机械弯曲获得期望的衰减。在1550 nm处，衰减超过55 dB，剩余损耗小于0.2 dB。
This study examined the bending effects of a thermally-expanded-core (TEC) fiber for an application as an in-line variable optical attenuator (VOA). The effects of the structural parameters of the TEC fiber and the refractive index of the external medium surrounding the clad layer on the bending loss are experimentally investigated and the device structure and fabrication process of the VOA are presented. The desired attenuation is obtained by mechanical bending of the TEC fiber. A wide range of attenuation exceeding 55 dB and low excess loss of <0.2 dB at 1550 nm are achieved.