耦合微環共振器中的類電磁引致透明效應

Abstract

本論文目的在於研究耦合微環共振器中的類電磁引致透明效應。相較於傳統的電磁引致透明效應，光學系統中的類電磁引致透明效應有許多優點，像是在室溫、固態以及晶片尺度的條件下操作。首先，介紹傳統的電磁引致透明效應、波導理論和共振器原理。然後進一步探討串聯結構與並聯結構的耦合微環共振器的光傳輸特性，且推導出兩種結構的穿透率、反射率和吸收率公式，並說明如何使用耦合微環共振器產生類電磁感引致明效應，最後再以數值分析模擬兩種不同結構之參數對於其透明窗口的影響。串聯結構中，會分別討論耦合係數、吸收係數、環半徑、環數對於類電磁引致透明效應的影響。另一方面在並聯結構還會考慮直波導長度對於類電磁引致透明效應的影響。研究結果顯示，兩種結構對於不同參數的調整會有不同的結果，故能藉由這樣的結果應用於窄帶濾波器、光儲存器、量子記憶體、感測器及光學力增強器。

Electromagnetically induced transparency-like (EIT-like) effect in microring resonator is researched in this thesis. Compared to the traditional EIT effect in atomic system, optical system has some advantages, such as operating at room temperature, solid state, and chip-scale conditions. First, the traditional electromagnetic induced transparency effect, waveguide theory and resonator principle are introduced. Then, the optical propagation characteristics of coupled microring resonators with series structure and parallel structure are further discussed. The formulas of transmittance, reflectance, and absorptance of both structures are derived, and how to use the coupled microring resonator to generate EIT-like effect would be demonstrated. Finally, numerical analysis was used to simulate the influence of the parameters of two different structures on their transparent windows. In the series structure, coupling coefficient, absorption coefficient, ring radius, and ring number will be discussed. On the other hand, the parallel coupling structure also considers the effect of straight waveguide length on the EIT-like effect. The results of the research show that the two structures have different results for adjustment of different parameters, so the results can be applied to narrow-band filters, optical storage, quantum memory, sensors and filed enhancement.