Professional CWDM module for high bandwidth optical networks
The Extralink 1x4 ITBMUX is a modern, coherent wavelength division multiplexing (CWDM) module that operates in the range of 1511 nm to 1571 nm. The device is designed to transmit multiple different data channels over a single optical fiber, increasing the capacity, reliability, and efficiency of the optical network. It is an ideal choice for internet service providers, enterprise networks, data centers, and FTTx systems.
How does the 1x4 CWDM multiplexing work?
The essence of CWDM technology is to transmit data signals at different wavelengths over the same optical fiber. The module has a 1x4 structure, meaning it splits a common optical port into four separate channels, or vice versa – it combines four channels into one fiber.
The 1511–1571 nm range is part of the classic CWDM band, providing low-loss data transmission, especially over long distances. The module is a passive device, requiring no power supply, making it an extremely reliable and maintenance-friendly solution.
Main features
- 1x4 CWDM multiplexer and demultiplexer design
- Operating wavelengths: CWDM channels between 1511 nm – 1571 nm
- Compatible with standard optical CWDM transceiver modules
- Passive, power-free optical device
- Low insertion loss and excellent channel isolation
- Reliable operation in long-distance and high-bandwidth networks
- Flexible usability in FTTx, Metro, enterprise, and data center networks
Benefits for providers and enterprises
By using the 4-channel CWDM multiplexer, the existing optical infrastructure can be utilized much more efficiently. There is no need to lay new fibers, as the module allows simultaneous transmission of multiple services over a single fiber.
- Cost reduction: lower investment costs as there is no need to install new optical cables.
- Increased bandwidth: parallel transmission of multiple independent data channels.
- Flexibility: simultaneous support for internet, IPTV, VoIP, data transmission, leased lines, and other services.
- Scalability: gradually expandable optical network by adding new CWDM channels.
Typical application areas
The module can be widely used in any optical system where high bandwidth, reliable data transmission, and cost-effective expandability are important.
- Internet service provider networks (ISP, WISP)
- Optical backbone networks and Metro Ethernet systems
- FTTx solutions: FTTH, FTTB, FTTC
- Connecting enterprise campuses and office buildings
- Data center interconnections (DCI)
- Optical interconnection of video surveillance and security systems
Connection and compatibility
The CWDM module is available with standard optical connectors (typically LC/SC), making it easy to integrate into existing optical patch panels and rack cabinets. It is compatible with most manufacturers' CWDM SFP, SFP+, and other optical transceiver modules that fall within the 1511–1571 nm wavelength range.
The module can be easily inserted into the existing network topology:
- Optical transceiver modules should be placed into the SFP/SFP+ ports of network devices (switch, router, OLT, media converter).
- The appropriate CWDM wavelength ports should be connected to the module's dedicated channels using optical patch cables.
- The common (COM) port should be connected to the optical fiber leading to the remote CWDM module.
- On the remote side, the same structure is repeated, ensuring transparent, bidirectional data transmission.
Reliability and performance
The module has excellent optical parameters, providing low insertion loss and high channel isolation. This means stable, interference-free data transmission even over longer distances and in high-traffic networks. Due to its passive design, there are no moving or quickly wearing parts, requiring minimal maintenance.
- Low attenuation across the entire 1511–1571 nm range
- High channel isolation, reducing crosstalk
- Stable operation over a wide temperature range
- Long-lasting optical components
Why is it beneficial to use a CWDM module in the optical network?
Wavelength division multiplexing technology allows network expansion without installing new cables, but rather by better utilizing existing optical fibers. A 1x4 CWDM multiplexer alone significantly increases the available capacity. This is particularly valuable in environments where it is expensive, complicated, or physically constrained to install new optical cables.
Ideal choice for expanding optical infrastructure
Whether building a new optical network or expanding an existing system, this CWDM module offers a reliable, scalable, and cost-effective solution. Its application can create reserve capacity for future services, higher bandwidth packages, or new customer connections while keeping the network stable and operationally reliable.
