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  • 學位論文

鋅鎳及鎵擴散式鈮酸鋰光波導極化分離器之研製

Design and Fabrication of Zinc-and-Nickel-Codiffused and Gallium-Diffused Lithium Niobate Optical Polarization Splitters

指導教授 : 王維新

摘要


本論文主要是在z切鈮酸鋰基板上,利用鋅鎳共同擴散式波導以及鎵擴散式波導,製作出極化分離器。元件之基本架構為一非對稱Y形分岔,入射波導可導通任一極化方向的光,兩分支波導則分別為僅導通水平極化方向(TE)及僅導通垂直極化方向(TM)之光波導。 先前已發表極化分離器之製程均需要兩次以上的高溫擴散,但本論文所提出之製造方式則僅需一次高溫擴散,可有效節省製程時間。實驗所得到TE極化光之訊熄比可達到30dB,明顯優於已發表之數據;TM極化光之訊熄比可達到23dB,此與發表之數據十分接近。

並列摘要


A polarization splitter with zinc-and-nickle-codiffused optical waveguide and gallium-diffused optical waveguide is successfully fabricated. The basic structure of the proposed splitter is an asymmetrical y-branch. Both the TE- and TM-wave are guided in the input arm; near the branching region, the TE-wave is kept in the straight arm, whereas the TM-wave is directed to the bent arm. In this work, only one diffusion step is needed, instead of two in previous works, which greatly simplifies the fabrication process. The measured extinction ratios are 30dB and 23dB for the TE and TM waves, which are great than and about the same as those reported, respectively.

參考文獻


[23] 陳卓彥,“藍光鋅鎳擴散式馬赫任德電光調變器之研製” ,國立台灣大學光電工程學研究所碩士論文,2005.
[24] 陳松良,“鈮酸鋰藍光方向耦合器之研製”,國立台灣大學光電工程學研究所碩士論文,2005.
[2] R. G. Hunsperger, Integrated Optics: Theory and Technology 5th Ed., Springer, 2002.
[3] S. J. Chang, C. L. Tsai, Y. B. Lin, J.F. Liu, and W. S. Wang, “Improved electrooptic modulator with ridge structure in X-cut LiNbO3,”J. Lightwave Tech., vol. 17, pp. 843-847, 1999.
[4] P. K. Wei and W. S. Wang, “An optical TE-TM mode splitter on Lithium Niobate using Ti, Ni, and MgO diffusions,” IEEE Photon. Technol. Lett., Vol. 6, no.2, pp. 245-248, Feb. 1994

被引用紀錄


許嘉維(2012)。極化無關鈮酸鋰電光調變器之研製〔碩士論文,國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2012.10829
黃致凡(2012)。具有鋅鎳鎵共同擴散波導及側壁延伸電極之鈮酸鋰極化分離器〔碩士論文,國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2012.02646
康家興(2010)。可調式鋅鎳共同擴散及鎵擴散式鈮酸鋰光波導極化分離器之研製〔碩士論文,國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2010.00654
林譽融(2010)。以下坡式單形法匹配近場重建光波導折射率分布〔碩士論文,國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2010.00434

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