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研究生:林志昇
研究生(外文):Chih-Seng Lin
論文名稱:抗諧振反射光波導結構之多模干涉式分光元件之研究
論文名稱(外文):Investigation on ARROW-based MMI Power Dividers
指導教授:黃遠東黃遠東引用關係
指導教授(外文):Yang-Tung Huang
學位類別:碩士
校院名稱:國立交通大學
系所名稱:電子工程系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:中文
論文頁數:39
中文關鍵詞:抗諧振多模干涉分光抗諧振反射
外文關鍵詞:MMIARROWantiresonantmultimodesplitterdividers
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本研究在設計抗諧振反射光波導結構之多模干涉式分光元件。利用自身成像原理來運作的多模干涉式元件,具有簡單結構和能均勻等分輸出能量的特性,故極適合用來作為分光件。而抗諧振反射光波導元件則具有較大的導光區,所以能夠有效地和單模光纖匹配。理論上,先以特徵轉換矩陣法和有效折射係數法分析此元件中的模態,然後使用模態傳輸分析法來模擬在多模光波導內各模態傳播的情況,最後再應用光束傳輸法來驗證元件之特性。於本研究,設計了1╳2與1╳4分光元件。1╳2分光元件的損耗為0.2 dB; 而1╳4分光元件的損耗為0.4 dB, 分光波道間之不均勻度差為0.38 dB。對維持能量損耗小於0.7 dB及不均勻度小於0.5 dB元件特性之各元件參數容忍度也加以探討。

in the studies, we investigate the multimode interference power dividers based on the antiresonant reflecting optical waveguide structure. MMI devices, based on self-imaging effect, are compact and preserve the balanced output characteristics. The ARROW structure provides a single-mode propagation with a large core size and efficient coupling to single-mode fibers. The characteristic matrix method and effective index method are employed in modal analysis. Mode propagation analysis is used to simulate the mode propagating in the multimode waveguide. Then, use the beam propagation method to verify the results. In the studies, 1x2 and 1x4 power dividers have been designed. The excess loss for 1x2 power divider is 0.2 dB, and the excess loss for 1x4 power divider is 0.4 dB with 0.38 dB imbalance. The tolerances of device parameters have also been investigated.

1. Introduction
2. Analytic Theories and Method
2.1 Introduction.
2.2 Modal analysis by the characteristic matrix method.
2.3 Effective index method.
2.4 Beam propagation method
2.5 Modal attenuation.
2.6 Mode propagation analysis.
3. Design of ARROW-based MMI Power Dividers
3.1 Basic ARROW structure.
3.2 Basic MMI structure.
3.3 1x2 power divider.
3.4 1x4 power divider.
4. Tolerance Analysis
4.1 1x2 power dividers.
4.2 1x4 power dividers.
5. Conclusions

[1] Thomas Rasmussen, Jesper Kiel Rasmussen,
and Jorn Hedegaard Povlsen, ``Design and performance Evaluation
of 1-by-64 Multimode Interference Power Splitter for Optical communications.'' J. Lightwave Technol., vol. 13, no. 10, pp. 2069-2073, 1995.
[2] J. W. Arkwright, D. B. Mortimore, and R. M.
Adnams, ``Monolithic 1x19 singlemode fused fiber couplers,''
IEE Electron. Lett., vol. 27, no. 9, pp. 737-738, 1991.
[3] N. Nourshargh, E. M. Starr, and T. M. Ong,
``Integrated optics 1x4 divider in SiO2/GeO2,'' IEE Electron. Lett., vol. 25, no. 15, pp. 981-982, 1989.
[4] R. M. Jenkins, R. W. Devereux, and J.M. Heaton, ``Waveguide beam splitters and recombiners based on multimode propagation phenomena,'' Opt. Lett.' vol. 17, no. 14, pp.991-993, 1992.
[5] L. B. Soldano and E. C. M. Pennings, ``Optical multi-mode interference devices based on self-imaging: Principles and applications,'' J. Lightwave Technol., vol. 13, no. 4, pp. 615-627, Apr. 1995.

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