| 引用本文: | 王金娥,郑煜,吴宇列,等.熔锥型保偏光纤耦合器耦合系数分析.[J].国防科技大学学报,2007,29(2):123-126.[点击复制] |
| WANG Jin'e,ZHENG Yu,WU Yulie,et al.Coupling Coefficient Analysis of Fused Polarization-maintaining Fiber Couplers[J].Journal of National University of Defense Technology,2007,29(2):123-126[点击复制] |
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| 熔锥型保偏光纤耦合器耦合系数分析 |
| 王金娥, 郑煜, 吴宇列, 李圣怡 |
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(国防科技大学 机电工程与自动化学院，湖南 长沙 410073)
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| 摘要: |
| 耦合系数会直接影响到偏振光经过耦合器熔锥区后的光能量分布，从而影响保偏光纤耦合器的耦合性能。基于光波导模式耦合理论，建立了熔锥型保偏光纤耦合器的耦合模型，推导出了适应于纤芯为圆型、偏振主轴非平行时保偏光纤耦合器的耦合系数计算公式，形式简单、应用方便。为耦合模方程的求解以及耦合器的性能分析提供了前提条件，从而为熔锥型保偏光纤耦合器的高性能制造提供了理论指导。 |
| 关键词: 保偏光纤 耦合器 熔锥 耦合系数 |
| DOI： |
| 投稿日期：2006-09-04 |
| 基金项目:国家自然科学基金重点资助项目(50235040) |
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| Coupling Coefficient Analysis of Fused Polarization-maintaining Fiber Couplers |
| WANG Jin'e, ZHENG Yu, WU Yulie, LI Shengyi |
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(College of Mechatronics Engineering and Automation， National Univ. of Defense Technology, Changsha 410073，China)
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| Abstract: |
| Coupling coefficient will directly influence the light distribution of linearly polarized light through the Fused-Tapered zone of Polarization Maintaining Fiber(PMF) couplers. Accordingly, it affects the coupling performance of the couplers. Coupling model of fused polarization-maintaining fiber couplers is built on the basis of coupling mode theory of optical waveguide. A new formula for coupling coefficient of PMF couplers has been derived. It is appropriate for any PMF when the core is circular and the birefringent axes are nonaligned. The conclusion of the research can provide the precondition to solve the coupled mode equation and analyze the performance of couplers. Therefore, theoretical direction for the high-performance manufacturing of PMF couplers is provided. |
| Keywords: polarization-maintaining fiber fiber coupler fused-taper coupling coefficient |
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