Nonlinear directional coupler ( nldc ) is a switch used in optical network . w . s . man had studied transmission controlling with ground state soliton through nldc , it is obviously not available to used in superhigh speed network ; and mary j . potasek had studied the self - coupling with ultrashort solitons in nldc , self - coupling is difficult to control the signal transmitting . i has studied the transmission controlling with ultrashort solitons ( < 100fs ) in nldc , similarly i use a controlling pulse to control the signal pulse , it is the intensity of controlling pulse to decide the signal change its direction or not 非線性定向耦合器( nldc )是用在光網(wǎng)絡(luò)中的光開關(guān)器件,它主要用在全光網(wǎng)絡(luò)中, w . s . man等研究過基態(tài)孤子在nldc中的傳輸控制,便于對全光網(wǎng)絡(luò)中數(shù)據(jù)的正確傳輸,由于目前研究集中在100fs的超短脈沖傳輸特性上,顯然基態(tài)孤子的特點不再適用于超高速網(wǎng)絡(luò); maryj . potasek等就超短脈沖在nldc中的自耦合做了研究,在光網(wǎng)絡(luò)中自耦合任意性太大,不利于控制脈沖的傳輸。