CAT0028 REV01
Coarse Wavelength Division Multiplexer Module (CWDM)
Features：
Low insertion loss
High channel isolation
High stability and reliability
Application：
CWDM system
Metro/Access Networks
CATV Fiber optic System
Specifications：
Parameter
Value
Channel number
4
8
16
18
ITU Grid Channel:1271, 1291, 1311, …..1551, 1571, 1591, 1611
1270, 1290, 1310, …..1550, 1570, 1590, 1610
Central Wavelength(nm)
Operating Wavelength Range (nm)
Channel space (nm)
S:1260~1460 or H:1460~1620 or A: 1260~1620
20
Channel bandwidth (nm)
Channel flatness (dB)
Insertion Loss (dB)
λc ±6.5
≤0.4
≤1.8
≤3.0
≤4.2
≤4.5
Adjacent channel
≥30
≥40
≥15
≥55
≥50
Isolation
(dB)
Non-adjacent channel
express
Directivity (dB)
Return loss (dB)
PDL (dB)
≤0.15
≤0.20
Wavelength thermal stability (nm/℃)
Insertion loss thermal stability (dB/℃)
Power handling (mW)
Fiber Type
≤0.003
≤0.005
≤500
SMF-28e/SMF-28e XB
0 ~ +70
Operating temperature (℃)
Storage temperature (℃)
Dimensions (L*W*H) (mm)
-40 ~ +85
100*80*10 (P1)；120*80*18(P2)；60*60*10（P3）
*Above specifications are for devices without the connectors.
*For devices with connectors, IL will be 0.3dB higher, RL will be 5dB lower
*MUX cascading sequence：1610(Min IL)，1590，1570，……，1350，1330，1310，1290，1270+Exp。
*De-MUX cascading sequence：1270(Min IL)，1290，1310，……，1530，1550，1570，1590，1610+ Exp；
mar
k
et@acfiber.com