絕緣矽上多凹式微環形共振光緩衝器之研究

Abstract

本文為將光學微環形被動式元件改良並應用在光緩衝器其為未來發展之趨勢。我們將光學波導結合改良式多凹微環形共振腔並建置在SOI矽晶片上，此研究與模擬利用有效差分時域演算法進行模擬與設計。利用多凹式微環形光緩衝器的幾何結構所創造出的折角和較長的路徑，能夠有效的將光延遲在其緩衝器中並且應用於通訊上。我們設計三種不同形狀的光緩衝器分別為:酢醬草形、幸運草形和拼圖形。這些結構都是以傳統的環形共振腔為基礎並加以改良。除此之外，光的延遲時間是我們研究的一大重點，故在每一章中，我們模擬新型態模型與傳統環形模型並比較其光緩衝時間。

In this thesis, we improve optical micro-ring passive device and apply the device passive device to the optical buffer has become the future trend. We combine the optical waveguide with the multi-concaves optical resonant micro-ring cavity based on silicon-on-insulator (SOI), also integrated multi-concaves structure and the simulation is based on the well-known Finite-difference Time Domain (FDTD) technique. To use the structure of multi-concaves optical resonant micro-ring buffer which has the turns and the longer light path can delay the time availably and apply to the communication. We design the three kinds of the optical buffer: shamrock, four-leaved clover and jigsaw. The structures are based on classic micro-ring cavity. The buffer time is our major research. Therefore, we simulate the models and compare the buffer time of new model with classic model