3 Port CWDM
Low insertion loss, high isolation
Compact design and good consistency between channels
Operating wavelength range from 1270nm to 1620nm
Wide temperature range, high reliability and thermal stability
3 port CWDM
Products Description
The three-port CWDM is a core passive optical device designed based on thin-film filter (TFF) technology. It is widely used in short-distance optical communication transmission scenarios.
According to ITU criteria, channel spacing of CWDM is 20nm, featuring high transmission bandwidth and cost savings. It has a relatively wide spacing between multiplexed wavelengths, which greatly reduces the requirements for lasers and multiplexers/demultiplexers, significantly lowering the cost of capacity expansion. CWDM supports 18 wavelengths ranging from 1270-1620nm, therefore, the channel count for a CWDM device varies from 2 to 18 depending on customization of actual use.
In structure, the three-port CWDM includes three ports: common port (COM), pass-through port (Pass), and reflection port (Reflect), which achieve the purpose of wavelength division and multiplexing for specific wavelengths.
Key features
--Low insertion loss, high isolation
--Compact design and good consistency between channels
--Operating wavelength range from 1260nm to 1620nm
--Wide operating temperature range, high reliability and thermal stability
Product Specifications
| Operating wavelength (nm) | 1270-1610nm / 1271-1611nm |
| Channel spacing (nm) | 20nm |
| Passband insertion loss (nm) | ≤0.6dB |
| Reflectband insertion loss (nm) | ≤0.3dB |
| Adjacent isolation (nm) | ≥30dB |
| Non-adjacent isolation (nm) | ≥40dB |
| Return loss (nm) | ≥45dB |
| Directivity (nm) | ≥50dB |
| Max Optical power (nm) | 300mW |
| Pigtail type | SMF 28e |
| Connector type | LCUPC or per request |
| Packaging | Glass tube or steel tube |
| Operating temperature (℃) | -40 to 85℃ |
| Storage temperature (℃) | -40 to 85℃ |
Application Scenarios
--Access network
--Metro WDM systems
--Enterprise/Campus networks
FAQ
Q: What is the CWDM channel wavelength plan?
A: CWDM has nominal 18 channels at 20nm spacing: 1271nm, 1291nm, 1311nm....1611nm. And, because of the water peak, it is more frequent to use 1470nm to 1620nm for channel counts like 2,4 and 8.
Q: How far can CWDM transmit?
A: CWDM channel spacing and wavelengths are standardized in ITU-T G.694.2. CWDM is a cost-efficient option for shorter distances and simpler deployments where capacity requirements are limited, typically up to 70-80 kilometers.
Hot Tags: 3 port cwdm, China 3 port cwdm manufacturers, suppliers, factory
You Might Also Like
Send Inquiry
