本計畫預計以環型共振腔以達到慢光之目的，所提出新型環型共振腔是將耦合區移至環狀波導的彎曲部位，耦合區的長度為環狀波導的半圓，如此可增加Q 值與Finesse 並具低非線性效應特性。我們的初始研究已可證明其Q 值可達40,000。我們規劃本計畫為三年之期程，計畫第一年執行的重點為優化此一新型環型共振腔，以得到最高Finesse 為目標，我們將使用FDTD 法進行計算。本計畫第二年擬使用 silicon-on-insulator 晶片製作元件，我們將使用本校e-beam lithography 與新加坡大學電機系Vincent Chengkuo Lee 教授共同合作，以focused ion beam(FIB)來製作元件(合作意向書請見附件)。並量測元件之特性。計畫的第三年在製作上將量測結果回饋給設計方面，以修正優化元件的特性，使元件的Q 值能再提昇，光脈衝能停在ring 中更久，使有效之光速能更慢。本計畫最低目標Q 值至少可增至106。在應用方面，我們擬往兩方面發展，一方面目前製作微流道，於元件上方以製作高敏感度非螢光生物感測器。另一個方向為將液晶加入微流道中，再加上電極可製成波長可調之濾波器。 We plan to study the slow light effect in a novel ring resonator. The coupling region of the novel ring resonator is designed to be on the half of the ring waveguide. The Q factor and the finesse of the device can be largely enhanced. The preliminary result shows that Q-factor can be as high as 40,000. This is a 3-year project. In the first year, we plan to optimize the novel ring resonator to obtain the higher finesse. We will use the finite-difference time-domain method to study the performance of the devices. In the second year, we will use silicon-on-insulator wafer to realize the sample. We will use the e-beam lithography of National Central University and focused ion beam of National University of Singapore for the fabrication. We will also measure the performance of the samples. In the third year, we will feedback the measurement result to the design to optimize the device performance. The aim is to make the input pulse stay longer in the ring resonator and to reduce the effective light velocity. The Q-factor of 106 is expected to be achieved. For the applications, we will try to fabricate the micro-fluidic channels on the ring-resonator to realize the label-free biosensors. We will also inject the liquid crystal into the channel to realize the wavelength-tunable filter. 研究期間：10008 ~ 10107
