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題名 | Variational Analysis for the Propagation Characteristics of the Planar Optical Waveguides=變分法分析平面波導之波傳特性 |
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作者 | 趙士傑; 蔡五湖; 吳慕鄉; | 書刊名 | 大同學報 |
卷期 | 23 1993.11[民82.11] |
頁次 | 頁299-303 |
分類號 | 448.531 |
關鍵詞 | 平面波導; 波傳特性; 變分法; |
語文 | 英文(English) |
中文摘要 | 本文以變分法延伸修正高斯方法研究單模光纖及耦合器。我們使用簡單的基本函 數去近似基本模態之電場分佈。經多方面研究證明我們使用的方法在線性及非線性步階式散 焦光纖上大幅提升了修正與延伸高斯法。此法非常適用於光纖及耦合器。 |
英文摘要 | A correct trial field is used for the calculation of the propagation constant of the planar slab waveguide by variational method. The results agree completely with the exact numerical ones and show that the variational method is very simple and accurate if a judicious choice of the trial field can be found. We then use a single two-parameter trial field to solve the propagation characteristics of the single mode inhomogeneous planar waveguides with no analytical solutions available. The results are more accurate than the WKB method and even better than the three-parameter cosine-exponential (CE) trial field in some cases. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。