| 渐变折射率波导表面折射率的确定 |
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| 引用本文： | 付国兰,曹庄琪,丁渊,朱海东,沈启舜,刘三秋. 渐变折射率波导表面折射率的确定[J]. 光学学报, 2005, 25(2): 61-164 |
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| 作者姓名： | 付国兰 曹庄琪 丁渊 朱海东 沈启舜 刘三秋 |
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| 作者单位： | 上海交通大学物理系,上海,200240;江西师范大学物理与通信电子学院,南昌,330027;上海交通大学物理系,上海,200240;南昌大学理学院,南昌,330047 |
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| 基金项目： | 国家自然科学基金(60237010)资助课题。 |
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| 摘 要： | 单调变化的渐变折射率波导的表面折射率大于波导基模的有效折射率，因而不能用传统的m-线方法测量。利用分析转移矩阵(ATM)方法研究了渐变折射率波导中的表面等离子波，提出了一种确定波导近表面折射率的实验技术，在波导折射率分布的拟合中，得到了比传统逆WKB方法更为合理的结果。
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| 关 键 词： | 导波光学 折射率分布 分析转移矩阵方法 表面等离子波 渐变折射率波导 |
| 收稿时间： | 2004-04-13 |
Determination of Surface Index of Graded-Index Waveguides |
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| Fu Guolan,Cao Zhuangqi,Ding Yuan,Zhu Haidong,Shen Qishun,Liu Sanqiu. Determination of Surface Index of Graded-Index Waveguides[J]. Acta Optica Sinica, 2005, 25(2): 61-164 |
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| Authors: | Fu Guolan Cao Zhuangqi Ding Yuan Zhu Haidong Shen Qishun Liu Sanqiu |
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| Affiliation: | Fu Guolan 1,2 Cao Zhuangqi 1 Ding Yuan 1 Zhu Haidong 1 Shen Qishun 1 Liu Sanqiu 3 1 Department of Physics,Shanghai Jiaotong University,Shanghai 200240 2 Institute of Physics and Communication and Electronics,Jiangxi Normal University,Nanchang 330027 3 School of Science,Nanchang University,Nanchang 330047 |
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| Abstract: | Surface refractive index of a monotonously graded index waveguide, which is greater than the effective index of the fundamental mode and cannot be measured in conventional m line spectroscopy, is experimentally determined by employing the surface plasma wave (SPW) resonance technique based on analytical transfer matrix (ATM) method. The index profiles predicted are more accurate than those obtained by the conventional inverse WKB (Wentzel, Kramers, Brillouin) method. |
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| Keywords: | guided wave optics refractive index profile analytical transfer matrix (ATM) method surface plasma wave graded index waveguides |
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