| 摘要: | 有別於傳統的電子交換連接器(electric cross-connects)只能在空間上進行交換(switching), 全光學的交換連接器(all-optical cross-connects)必須在二個向度上俱備可以交換的功能: 一是空間向度, 另一是波長向度(wavelength domain)。然而, 全光學的交換連接器須借助波長轉換器(wavelength converters, WCs), 才能在波長向度上進行波長的轉換。早期, 波長轉換器只能做單一波長的轉換, 一直到最近, 許多能同時做多個波長變換(multiple conversions)的革新的波長轉換器(WCs)才被發明出來。當我們以這些創新的波長轉換器當作新的單位元件時, 便希望能藉由建造多階(multiple stages)的波長交換網路(wavelength exchange network, WEN), 來允許更多數量的波長轉換可以同時發生。然而, 技術上我們首先會遇到的限制便是, 目前的波長轉換器只能對於波長在一定範圍(conversion range)內的光波做轉換。這個實際狀況中所面對的限制條件, 在傳統的電子交換網路中並毋需被考慮, 卻也因此為全光學的空間/波長交換網路(optical space/wavelength)的建立, 帶來了新的研究方向。故此, 我們於此研究計劃中, 想嘗試去發展, 在不影響光學空間/波長交換網路的充分連接性(full connectivity)下, 卻可縮減波長變換範圍的新技術。 ; All-optical cross-connects need to perform switching not only in the space but also in the wavelength domain. Switching in the wavelength domain requires wavelength converters (WCs). Recently many innovative WCs capable of doing multiple conversions simultaneously have been invented. We can use multiple stages of such WCs to form a wavelength exchange network (WEN) to allow an even larger number of parallel wavelength conversions. One technology constraint we need to overcome in the design of WENs is that WCs with a wide conversion range is technologically infeasible. This constraint introduces new issues in the construction of all-optical space/wavelength switches. In this project, we will try to develop new techniques that can reduce the conversion range without affecting the full connectivity of the optical space/wavelength switches. ; 研究期間 9709 ~ 9807 |
