Development of Routing Device with White Spectral Channel Using in All Optical General Multiprotocol Label Switching Network

[[abstract]]本計劃將以單一NxN 陣列波導光柵結合可調式布雷格光纖光柵來實現全光白光波長通道之可重 組態光信號塞取工器以運用於多重通訊協定標籤交換網路，不同於以往NxN 陣列波導光柵結合2x2 光切換器所實現的可重組態光信號塞取多工器只能提供(N-1)個波長訊號的網路管理，透過陣列波導 光柵具有週期性波長濾波功能，配合在不同埠對間放置相對應的可調式布雷格光纖光柵，我們可以 延伸網路波長訊號的管理數量，當網路管理者想取出某波長訊號，則調整相對應之布雷格光纖光柵 中心波長使其反射波長訊號，然而，若波長訊號需直接通往輸出端時，由於每埠兩相鄰波長頻寬為 (N-1)波長，此相鄰波長頻寬允許可調式布雷格光纖光柵中心波長調至此範圍，使得波長訊號可以不 受干擾直接通往輸出端，且由於陣列波導光柵是以週期性波長出現每埠對間，每埠對間可放至多根 相對應的可調式布雷格光纖光柵來決定是否反射波長訊號，因而可提供超過(N-1)個波長標籤訊號的 管理。利用單一NxN 陣列波導光柵結合可調式布雷格光纖光柵不僅能以低成本來提供多重通訊協定 標籤交換網路且允許更為彈性的網路服務。[[abstract]]This project will employ a single NxN array-waveguide grating (AWG) and tunable fiber Bragg grating (FBG) to realize a reconfigurable optical add-drop multiplexer (ROADM) for general multiprotocol label switching (GMPLS) network. The transditional ROADM by using NxN AWG and 2x2 optical switch can only handle (N-1) wavelength signals. However, we can deal with more than the (N-1) wavelength signals in GMPLS network through using the AWG cyclic wavelength filter function associated with installing the corresponding tunable FBG in the port pair of the AWG. When network administrator needs to drop some wavelength signals, the corresponding FBGs will be tuned to those wavelength signals to reflect them. If the wavelength signals need to pass through into the ROADM output port, the FBG wavelength will be tuned away from the wavelength signals without interfering other wavelength signals due to the bandwidth between two adjacent wavelengths in each port is (N -1) wavelengths. Moreover, with the AWG cyclic wavelengths in each port, we can place the corresponding multiple tunable FBG to make whether reflect the wavelength signals or not so that the proposed ROADM allows to manage more than (N - 1) wavelength labels signals. By using a single NxN AWG and tunable FBG to realize the ROADM, the proposed ROADM not only reduced the cost for GMPLS network, but also allows a flexible network service.[[note]]NSC100-2622-E168-007-CC