WDM - CWDM, - 20 . DWDM , 16-18 WDM. , "" ( MAN - Metropolitan Area Network, IEEE 802.6).
WDM , ( ) "" (1383 ). . G.694.2 18 20 : 1271, 1291, 1311,... 1571, 1591, 1611, .. , , 340 . , , . 140 (1471-1611 ) - 8.
, , CWDM, 200 , 10 20 . DWDM, CWDM . , , - , CWDM DWDM, , , : ( ) .
10.3.8.1. /
DWDM 100 CWDM, 8 1471-1611 . .10-8 . DWDM 0,8 ( ) , - CWDM 20 , L DWDM.
.10-8. CWDM DWDM
..... 1528,77-1560,61 , L -
1566,31-1612,65 . 5 CWDM: 1531, 1551, 1571, 1591 1611 . , CWDM 8 DWDM . :
) CWDM 8 (1471-1611 );
) , CWDM 8 DWDM.
. -, DWDM CWDM, ( 50%) CWDM, -, CWDM L . : 1471, 1491, 1511 1611 , 1531 , , 1528,77 .
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, - 4 CWDM 4 , .10-9, 3, , : 1471, 1491 1511 , 1 1611 . +. 32 (4 CWDM+28 DWDM), 4 : 8 32.
. : 4 4 , , , .. , , DWDM. , 32 32 L, .. .. 68 (4 CWDM+64 DWDM). .. , .10-10, : 4 (CDMA-A)+32 (DWDM-Q+32 (DWDM-L).
. 10-9.
, : 1471, 1491, 1511 + 32 + 32 L + 1611 .
.10-10. CWDM DWDM