| 统计优化迭代法测量质子交换波导折射率分布 |
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| 引用本文： | 梁东波,唐杰,矶守,陈林,袁一方,陈抱雪.统计优化迭代法测量质子交换波导折射率分布[J].光学学报,2002,22(6):70-673. |
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| 作者姓名： | 梁东波 唐杰 矶守 陈林 袁一方 陈抱雪 |
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| 作者单位： | 1. 上海理工大学,光学与电子信息工程学院,上海,200093
2. 日本东京农工大学工学院应用化学系,日本东京 |
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| 摘 要： | 提出了一种用于拟合测量渐变波导的折射率分布的新的理论处理。该方法把统计优化手段导入循环迭代法 ,可适用于费米函数这一类曲线变化范围大、且有多个自变量的函数。实验上用焦磷酸质子交换制备了LiNbO3波导样品 ,用该方法对退火后的折射率分布作了测量拟合 ,折射率拟合值与实验值的均方差为± 8.2× 10 - 4。
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| 关 键 词： | 统计优化迭代法 渐变折射率 折射率分布 LiNbO3波导 质子交换 拟合测量 铌酸锂波导 光波导 |
Recovery of Refractive-Index Profiles of Proton-Exchanged Waveguides Using Statistical Optimum Iteration Method |
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| Liang Dongbo Tang Jie Mamoru Iso Chen Lin Yuan Yifang Chen Baoxue ,College of Optics and Electron Information Engineering,University of Shanghai for Science and Technology,Shanghai.Recovery of Refractive-Index Profiles of Proton-Exchanged Waveguides Using Statistical Optimum Iteration Method[J].Acta Optica Sinica,2002,22(6):70-673. |
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| Authors: | Liang Dongbo Tang Jie Mamoru Iso Chen Lin Yuan Yifang Chen Baoxue College of Optics and Electron Information Engineering University of Shanghai for Science and Technology Shanghai |
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| Institution: | Liang Dongbo 1) Tang Jie 1) Mamoru Iso 2) Chen Lin 1) Yuan Yifang 1) Chen Baoxue 1) 1),College of Optics and Electron Information Engineering,University of Shanghai for Science and Technology,Shanghai 200093 2) |
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| Abstract: | A statistical optimum iteration method for calculating refractive index profiles of graded index waveguides from measured mode indices is presented. The method can be applied to the functions with two free coefficients, such as the Fermi function, so that it can be used to recover the graded index profiles with wide variation range. This method is applied to proton exchanged LiNbO 3 waveguides and a good agreement between the theoretical and the experimental values is obtained. |
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| Keywords: | graded refractive index refractive index profile recovery LiNbO 3 waveguide proton exchange |
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