DWDM密集波分復用(yong)(yong)，它能復用(yong)(yong)、解復用(yong)(yong)或(huo)(huo)分插復用(yong)(yong)不(bu)同的(de)光(guang)信號，能有效節(jie)省光(guang)纖資源和組網(wang)成本。相對于CWDM而言，極大(da)地(di)提(ti)高了工作波長數量，從(cong)而大(da)大(da)地(di)增(zeng)加了信號傳輸速(su)度和通(tong)信容(rong)量，DWDM具有100GHz、200GHz等信道(dao)間(jian)隔，適用(yong)(yong)于長距離，大(da)容(rong)量長途干(gan)線網(wang)，或(huo)(huo)超(chao)大(da)容(rong)量的(de)城(cheng)(cheng)域(yu)網(wang)核(he)心(xin)節(jie)點(dian)，廣泛應(ying)用(yong)(yong)于電信5G、城(cheng)(cheng)域(yu)網(wang)、骨干(gan)網(wang)。
