English
CWDM (Coarse Wavelength Division Multiplexing) is a standardized WDM technology that uses up to 20 different wavelengths for data transmission over a single fiber. In contrast to Dense WDM (DWDM), CWDM uses only a ‘coarse’ wavelength grid, so the underlying optical component technology is simpler. This makes CWDM systems very cost-effective, but also limits them in terms of total capacity.
| Parameter | 4 Channel | 8 Channel | 16 Channel | ||||
| Mux | Demux | Mux | Demux | Mux | Demux | ||
| Channel Wavelength (nm) | 1270~1610 | ||||||
| Center wavelength Accuracy (nm) | ±0.5 | ||||||
| Channel Spacing (nm) | 20 | ||||||
| Channel Passband (@-0.5dB bandwidth (nm) | >13 | ||||||
| Insertion Loss (dB) | ≤1.6 | ≤2.5 | ≤4.5 | ||||
| Channel Uniformity (dB) | ≤0.6 | ≤1.0 | ≤1.5 | ||||
| Channel Ripple (dB) | 0.3 | ||||||
| Isolation (dB) | Adjacent | N/A | >30 | N/A | >30 | N/A | >30 |
| Non-adjacent | N/A | >40 | N/A | >40 | N/A | >40 | |
| Inertion Loss Temperature Sensitivity (dB/℃) | <0.005 | ||||||
| Wavelength Temperature Shifting (nm/℃) | <0.002 | ||||||
| Polarization Dependent Loss (dB) | <0.1 | ||||||
| Polarization Mode Dispersion | <0.1 | ||||||
| Directivity (dB) | >50 | ||||||
| Return Loss（dB） | >45 | ||||||
| Maximum Power Handling (mW) | 300 | ||||||
| Opterating Temperature (℃) | -5~+75 | ||||||
| Storage Temperature (℃) | -40~85 | ||||||
| Package dimension (mm) | L100 x W80 x H10 | L142 x W102 x H14.5 | |||||
| CWDM | Channel Spacing | Number of Channels | Configuration | 1st Channel | Fiber Type | Fiber Length | In/Out Connector |
| C=CWDM Grid | 04=4 Channel 08=8 Channel 16=16 Channel 18=18 Channel N=N Channel |
M=Mux D=Demux O=OADM |
27=1270nm …… 47=1470nm 49=1490nm …… 61=1610nm SS=special |
1=Bare fiber 2=900um loose tube 3=2mm Cable 4=3mm Cable |
1=1m 2=2m S=Specify
|
0=None 1=FC/APC 2=FC/PC 3=SC/APC 4=SC/PC 5=ST 6=LC S=Specify
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