激光技术, 2013, 37 (2): 243, 网络出版: 2013-03-27   

空芯光子晶体光纤损耗的研究

Study on loss in hollow-core photonic bandgap fibers
作者单位
重庆大学 通信工程学院, 重庆 400044
摘要
为了研究反共振纤芯壁对空芯光子晶体光纤限制损耗和散射损耗的影响, 利用全矢量有限元法对所设计的具有不同纤芯壁和纤芯半径的空芯光子晶体光纤进行仿真, 得到了3种纤芯壁在不同纤芯半径时的有效折射率、限制损耗和芯内功率分数随波长变化的曲线。由数值模拟结果可知,纤芯壁采用T=3的环形反共振层和椭圆反共振层设计时, 限制损耗降低了约两个数量级, 芯内功率分数在通信波段提高了13%。结果表明, 这两种设计可以有效降低空芯光子晶体光纤的限制损耗和散射损耗。
Abstract
In order to study the effect of the antiresonant core-surround ring interface on the confinement loss and scatter loss, the given hollow-core photonic crystal fibers(HC-PCFs) with different antiresonant core-surround rings and core radius were simulated by means of full-vector finite element method, and the curves among the effective index, confinement loss and power-percentage in core with change of wavelength were obtained. The numerical simulation shows that, when the antiresonant core-surround ring is designed as T=3 annular or elliptic geometry, the confinement loss reduces 2 order of magnitude and the power-percentage in core increases 13% in communication wave band which demonstrate both the designs in this paper can reduce the confinement loss and scatter loss in HC-PCFs effectively.

何丁丁, 刘敏, 简多, 李丹, 廖洲一. 空芯光子晶体光纤损耗的研究[J]. 激光技术, 2013, 37(2): 243. HE Ding-ding, LIU Min, JIAN Duo, LI Dan, LIAO Zhou-yi. Study on loss in hollow-core photonic bandgap fibers[J]. Laser Technology, 2013, 37(2): 243.

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