5-1 結論
我們成功的以多層介質的干涉結構設計可調式濾波器模組，經由我們的計 算可知，藉由調動層的調動使得穿透過此結構的穿透波長發生改變，以達到可調 式濾波的目的。在我們所設定的調動範圍內，可以維持相當線性的頻率調動，而 我們也以等效介面法來分析此頻率調動的性質。另外，我們也從微波的量測實驗 中成功的驗證所設計的可調式濾波器的頻率調動性質。
我們在可調式濾波器調動模組兩端對稱置入一維光子晶體作為共振腔體。由 我們計算的結果可知，當置入共振腔體後，品質因子可明顯的改善，而達成一個 高品質因子的可調式濾波器設計。同時，我們也發現，在我們的設計中，頻率的 調動將由調動模組控制，而品質因子則由置入的共振腔控制。另ㄧ方面，我們也 探討了在相同之調動距離範圍下，不同的調動結構及選取之介質折射率之不同對 於調動頻率範圍之影響。我們發現當調動之層數越多或調動層越往缺陷層靠近，
則可以增加其頻率的調動範圍，而所選取之高折射率層之折射率越高，也會增加 其調動之頻率範圍。
在可調式色散補償器方面，我們探討了一些影響穿透頻帶之參數，並且成功 的以一維光子晶體耦合腔體，設計出一個以波長 1550nm 為中心波長且頻寬大於 2nm 之穿透頻帶。在調動的範圍下，中心波長仍然可以固定在 1550nm，且在整 個頻寬中都可以保持相當好的平坦度，可以避免訊號波變形，而在操作波長 1549.2nm 之色散值可以由12ps nm 改變到/ 0.24ps nm ，因此可以克服在光通訊/
系統中因為傳輸的距離不同而所需之補償之色散值不同的問題。
5-2 未來工作
在我們所設計的結構中，其調動的行為是利用機械式的調動。在本論文中，
我們的實驗量測部分乃是在微波段進行，調動距離將為公分等級。因此，將我們 所設計之濾波器與色散補償器在微波段使用時，樣品之製作與調動層之調動與控 制將可以輕易且準確的完成。但當將我們的設計用在光學頻段作為可調光學濾波 器或色散補償器時，樣品之製作與調動距離的控制上勢必顯的相當困難，且利用 機械式的調動在時間的反應上仍不敷需求。但由我們的分析結果中，我們可以了 解究竟是哪些因素影響使得濾波器與色散補償器具有頻率與色散參數可調的性 質，將來我們可以利用加在調動層中改以光學的非線性材料，或是加入液晶層的 結構，如此，將可以利用入射光強或是外加電壓來作為調動的機制，便可以克服 以機械式調動所產生的問題，如此將可以使我們的設計更具有廣泛而實用的價 值。
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