基於D形光纖之拉曼感測器製作與量測;The Fabrication and Characterization of D-fiber Based Raman Sensor

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/59171

Title:	基於D形光纖之拉曼感測器製作與量測;The Fabrication and Characterization of D-fiber Based Raman Sensor
Authors:	張緒國;Chang,Hsu-Kuo
Contributors:	光電科學與工程學系
Keywords:	D形光纖;增強係數;拉曼感測器;表面增強拉曼散射;表面電漿共振;D-fiber;Enhancement factor;Raman Sensor;Surface Enhanced Raman Scattering;Surface Plasmon Resonance
Date:	2013-01-26
Issue Date:	2013-03-25 15:55:31 (UTC+8)
Publisher:	國立中央大學
Abstract:	本論文理論部分主要在探討側磨光纖之漸逝波的水平波向量與金屬銀膜在不同厚度下之表面電漿波的波向量是否能達到相位匹配，並利用加入光柵結構使漸逝波的水平波向量平移達到與表面電漿波的波向量更佳匹配之相位。本研究實驗上利用研磨拋光技術與金屬薄膜濺鍍技術製作表面增強拉曼散射之側磨光纖基板。並利用自我組裝技術更進一步增強側磨光纖漸逝波與銀膜表面電漿波的耦合效率，因此可得到更佳的增強係數。在拉曼光譜實驗中可量測到明顯的拉曼訊號並可對應到R6G分子的振動光譜，證明此架構具有良好的分子辨識功能。 Theoretically, we justify the degree of phase matching between the mode of D-fiber and that of surface plasmon wave at various clad thickness. By employing grating structure, the guide mode can be effectively coupled to the surface plasmon wave. Experimentally, the D-fiber based surface Raman sensor was realized by side-polish of the fiber, self-assembly of microsphere grating and sputter the silver film. Sequentially, Rhodamine 6G was used as the prototype molecule and six vibrational bands was successfully identified.
Appears in Collections:	[Graduate Institute of Optics and Photonics] Electronic Thesis & Dissertation

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