English
- CWDM system
- Metropolitan Area Network (MAN) and Access Network (AN)
- CATV network
Coarse Wavelength Division Multiplexer
The Coarse Wavelength Division Multiplexer (CWDM) is a low-cost WDM transmission
technology for metro and access networks. In principle, CWDM uses an optical multiplexer to
transmit optical signals of different wavelengths into a single optical fibre for transmission.
At the receiving end of the link, the mixed signals in the optical fibre are decomposed into
signals of different wavelengths with the help of optical demultiplexer, which is connected
to the corresponding receiving device. Using thin film filter technology, it has characteristics
such as high isolation and high reliability.
Details
Specification
Documents
Applications
Characteristics
- Low insertion loss, high isolation
- Excellent thermal stability
- Compliant with Telcordia standards
- Compliant with RoHS standards
Specifications
|
Parameters |
Specifications |
||||
|---|---|---|---|---|---|
|
Center wavelength (nm) |
1270, 1290~1590, 1610 or 1271, 1291~1591, 1611 |
||||
|
Channel spacing (nm) |
20 |
||||
|
Bandwidth (@3dB)(nm) |
≥15 |
||||
|
Center wavelength accuracy(nm) |
±1.5 |
||||
|
Operating wavelength (nm) |
1260~1620 or customized |
||||
|
Insertion loss (dB) |
4CH ≤1.4 |
6CH |
8CH ≤2.5 |
12CH ≤3.2 |
16CH ≤4.0 |
|
Pass band flatness (dB) |
≤0.5 |
||||
|
Adjacent channel isolation (dB) |
≥ 30 |
||||
|
Non-Adjacent channel isolation (dB) |
≥ 40 |
||||
|
Polarization dependent loss (dB) |
≤ 0.2 |
||||
|
Return loss (dB) |
≥ 45 |
||||
|
Directivity (dB) |
≥ 50 |
||||
|
Polarization mode dispersion (PS) |
≤ 0.15 |
||||
|
Wavelength thermal stability (nm/℃) |
≤0.002 |
||||
|
Insertion loss thermal stability (dB/℃) |
≤0.007 |
||||
|
Operating temperature (℃) |
-10~+65 |
||||
|
Storage temperature (℃) |
-40~+85 |
||||
|
Package dimension (mm） |
Customized |
||||
Related products
