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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/91690
標題: | 以雙材料光固化 3D 列印技術製造低損耗光波導 Low-Loss Polymer Waveguide Fabricated by Photopolymerization Based Two-Material 3D Printing Technique |
作者: | 花聖硯 Sheng-Yen Hua |
指導教授: | 黃定洧 Ding-Wei Huang |
關鍵字: | 光固化成型技術,光波導,雙材料結構,3D列印, vat polymerization,waveguide,multimaterial,3D printing, |
出版年 : | 2024 |
學位: | 碩士 |
摘要: | 聚合物光波導元件是短距離光通訊產品之關鍵零組件。目前製作聚合物光波導元件之方法包括半導體微影製程、熱壓成型及射出成形,然而這些技術通常製程複雜高、彈性度低且設備昂貴,較無法滿足未來光通訊產品低價位、普及化以及可快速客製化的發展趨勢。因此,本研究主要目的在於開發低成本、高製程彈性及高品質的聚合物光波導元件之製作技術。
此技術創新之處有兩方面: 首先是透過模擬軟體分析缺陷對於光波導的影響,並利用不同材料的特性以及材料的預處理,解決列印品內部的缺陷,以降低光波導內部之散射損耗;第二是首次使用雙材料之 3D 列印製程技術來製作長直光波導元件,利用足夠折射率差的材料組合並輔以合適的曝光參數,可避免列印品內部層與層之間脫落,同時減少核心層與披覆層介面的散射損耗,並增加光波導設計的彈性。 本論文進一步開發 3D 列印光波導之表面平滑化方法,利用 3D 列印本身所使用之樹脂搭配自製之微米級筆刷以及真空系統進行平滑化處理,成功解決樹脂表面之厭氧性造成的固化不完全,藉此技術降低表面粗糙。實驗結果顯示,使用合適的材料組合及列印製程,可成功批次製作出截面積分別為 200×198、459×421、712×667、997×933 平方微米之 3D 列印長直波導,並搭配平滑化製程進行後處理。光損耗量測結果顯示截面積為 997×933 平方微米之波導在 650 奈米波長時平均傳播損耗為 0.27 dB/cm。此結果顯示,本論文所使用之雙材料 3D 列印技術具有高製程彈性與低成本的優勢,使其成為未來製作光波導的最佳選擇方案之一。 Polymer waveguides are key components for short-haul optical communication. Recently, several methods for fabricating polymer waveguides have been developed, including photolithography, hot embossing and injection molding, etc. However, these technologies are usually complicated, non-flexible and need expensive facility. In the thesis, a low-cost low-loss two-material polymer waveguide was designed, fabricated and tested. The waveguide was fabricated using photopolymerization based two-material 3D printing technique. In this technique, the optical transmission influenced by defects in the printed object was analyzed through simulation software in advance. The scattering loss caused by defects was minimized by choosing suitable material combination and proper material preparation. In addition, a surface smoothing treatment for 3D printed optical waveguides was proposed. The process involves the use of a micrometer-scale brush and a vacuum system for smoothing treatment, which successfully addressed the issue of incomplete curing caused by the oxygen inhibition on the resin surface. This treatment can significantly reduce surface roughness. The effects of printing process on the quality of fabricated polymer waveguides were also investigated. Under proper processing conditions, polymer waveguides with cross-sectional dimensions of 200 × 198, 459 × 421, 712 × 667, and 997 × 933 μm2 were successfully fabricated. The average propagation loss of those waveguides is 0.27 dB/cm measured at the wavelength of 650 nm. These results indicate the great potential of using photopolymerization 3D printing for rapid fabrication of polymer waveguides with high process flexibility and low cost. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/91690 |
DOI: | 10.6342/NTU202400273 |
全文授權: | 同意授權(全球公開) |
顯示於系所單位: | 光電工程學研究所 |
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