With the adjustment and improvement of various traffic routes, the distance between everyone is also farther and farther. Voice, video and data networks are becoming more complex as the demand for more bandwidth and faster transfer rates increases. To meet these demands, network administrators rely more on fiber optics. Many suppliers, corporate companies and government entities are turning to fiber, but laying more fiber is an expensive option once the available fiber infrastructure is exhausted.

Many companies are adopting WDM (wavelength division multiplexing) technology or wdm networks to increase the capacity and strength of existing fiber optic infrastructure. WDM is a technology that uses different wavelengths to multiplex multiplexes of light into a single fiber. Therefore, the WDM communication method can produce a multiplier effect within the capacity of the available fiber.

WDM is a bit rate independent protocol. WDM-based networks can transmit data at rates from 100 Mbps to 40 Gbps over IP, ATM, SONET/SDH, and Ethernet. As a result, a WDM-based network can maintain a variety of traffic at different speeds on the channel. Therefore, WDM is a lower cost method and can respond quickly to customers' bandwidth needs and protocol changes. WDM-based networks combine and transmit multiple signals of different wavelengths to control bandwidth and expand the capacity of existing fiber-optic backbones.

WDM optical solutions are becoming an invaluable tool for cable operators as segmentation and provisioning of business services tends to be more rampant. Dual wavelength wavelength division can double the service capacity within the same volume of fiber. There are some limitations to transmitting four or more optical signals on the same fiber using complex WDM technology, but recent innovations have made it possible to transmit multiple broadcast signals on a single fiber. This makes node splitting more cost-effective and operation-friendly.

There are mainly two popular variants of WDM. Coarse Wavelength Division Multiplexing (CWDM) and Dense Wavelength Division Multiplexing (DWDM). We know that each signal is at a different wavelength, so each variant has different capabilities and costs in a WDM multiplexer (or demultiplexer) device. In contrast, demultiplexers separate signals, while multiplexers combine multiple data signals into one signal for transmission on a single fiber.

CWDM technology is only used in HFC (Hybrid Fiber Coaxial) networks in the telecommunications industry. Just use a CWDM MUX (CWDM Multiplexer) to multiplex 8 transmitters of different CWDM wavelengths onto a single fiber. This can be helpful when the return path has more bandwidth contention than the forward path, so 2X4 node segmentation may be sufficient.

WDM technology is very popular today, and the equipment associated with it is very important to network users. We will continue to learn and improve, and provide you with a steady stream of new products and services.