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CWDM is a low-cost WDM transmission technology for the access layer of the metropolitan area network. In principle, CWDM uses an optical multiplexer to multiplex optical signals of different wavelengths into a single optical fiber for transmission. At the receiving end of the link, the mixed signal in the optical fiber is decomposed into different wavelengths by means of an optical demultiplexer. Signal, connect to the corresponding receiving device.
|
Parameter |
4 Channel |
8 Channel |
18 Channel | ||||
|
Mux |
Mux |
Demux |
Mux |
Demux |
Mux |
Demux |
|
|
Channel Wavelength (nm) |
1270~1610 |
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|
Center wavelength Accuracy (nm) |
±0.5 |
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|
Channel Spacing (nm) |
20 |
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|
Channel Passband (@-0.5dB bandwidth (nm) |
>13 |
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|
Insertion Loss (dB) |
≤1.6 |
≤2.5 |
≤3.0 | ||||
|
Channel Uniformity (dB) |
≤0.6 |
≤1.0 |
≤1.5 | ||||
|
Channel Ripple (dB) |
0.3 |
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|
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/°C) |
<0.005 |
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|
Wavelength Temperature Shifting (nm/°C) |
<0.002 |
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|
Polarization Dependent Loss (dB) |
<0.1 |
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|
Polarization Mode Dispersion |
<0.1 |
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|
Directivity (dB) |
>50 |
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|
Return Loss (dB) |
>45 |
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|
Maximum Power Handling (mW) |
300 |
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|
Opterating Temperature (°C) |
-5~+75 |
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|
Storage Temperature (°C) |
-40~85 |
