波導的非對稱性對高分子非對稱布拉格耦合器之影響

The effect of the asymmetric on polymer asymmetric Bragg couplers

謝明峰(Ming-Fung Shie)

指導教授 ： 何智廷

國立虎尾科技大學/工程學院/機械與機電工程研究所/碩士(2010年)

摘要

本論文主要是研究以高分子非對稱布拉格耦合器（ABC）製作光學濾波器並探討其特性。在此研究中，將以全像術干涉技術和微模轉印技術在高分子上製作光柵結構。接著高分子波長濾波器將由兩階段微模技術來製作，主要的模仁將先在負光阻上形成，然後再將其模型轉移到PDMS模仁上；在這步驟之後，將以PDMS高分子濾波器的模型(pattern)轉印至高分子上，來完成高分子ABC製作。
接下來，我們改變兩平行波導的非對稱性(兩波導分別有不同寬度)，並得到兩平行波導有效折射率至少相差多少，才可能避免反射光與傳輸光譜之重疊，研究中以原子力顯微鏡(AFM)、掃描式電子顯微鏡(SEM) 作表面形貌量測，其光學傳輸特性可由Tunable Laser頻譜分析儀等方法觀察與紀錄實驗之結果，並利BPM-CAD軟體模擬分析研究探討高分子非對稱布拉格耦合器的理論模擬與實際誤差。

關鍵字

光波導 ； 光柵 ； 全像術干涉 ； 微模轉印

並列摘要

This thesis describes a procedure to fabricate a polymer asymmetric Bragg couplers and Research it’s properties. In this study,the grating structure on a polymer is fabricated first by using holographic interferometry and micro-molding processes. The polymeric wavelength filters are produced by a two-step molding process where the master mold is first formed on a negative tone photoresist and subsequently transferred to a PDMS mold; following this step, the PDMS silicon rubber mold was used as a stamp to transfer the pattern of the polymeric wavelength filters onto a UV cure epoxy,to complete the polymer optical waveguide devices.
Next, We change the asymmetry of the two parallel waveguides,to make the two decoupled waveguides quite dissimilar to avoid the spectrum overlapping.The profiles of the devices were observed using SEM and AFM system. The optical transmission characteristics were measured in terms of Tunable Laser spectrum analyzer. BPM-CAD (Beam propagation method) analysis was used to simulate and the theory results only have small different compared with the experiment results.

並列關鍵字

grating ； holographic interferometry ； waveguide

參考文獻

(23) 周珮如, ”三波導柵輔式光塞/取多工元件模擬與設計”, 國立虎尾科

(10) 黃建誠, ”感光高分子之積體光學波導之研製”, 國立虎尾科技大學光電與材料科技研究所, 2004/6.

(24) 林郁凱,“高分子非對稱布拉格耦合元件之研製”,國立虎尾科技大學機械與機電工程研究所,2008/6.

(4) H. Nishihara, Masamitus Haruna and Toshiaki Suhara, Optical Integrated Circuites, McGraw-Hill Company, Inc.,2001.

(1) S.V. Kartalopoulos, DWDM, John Wiley & Sons, Inc.,