WDM (Wavelength Division Multiplexing) is a technique, which uses a special property of fiber-optics. This property permits the mixture of multiple signals onto just one strand of fiber. Each signal is owned by another wavelength, of light. Since one wavelength does not affect another wavelength, the signals usually do not interfere. And CWDM (Coarse wavelength division multiplexing) can be a technology which multiplexes multiple optical signals on one fiber optic strand by utilizing different wavelengths, or colors, of laser light to hold different signals. By making use of bidirectional communications more than a single strand of fiber, network managers can realize a multiplication effect in the capacity of these available fiber infrastructure.
CWDM modules perform two functions. First, they filter the lighting, ensuring just the desired wavelengths are utilized. Second, they multiplex or demultiplex multiple wavelengths, which are applied to just one fiber link. The main difference is in the wavelengths, that are used. In CWDM space, the 1310-band as well as the 1550-band are split up into smaller bands, each only 20-nm wide. Within the multiplex operation, the multiple wavelength bands are combined onto just one fiber. In the demultiplex operation, the multiple wavelength bands are separated from a single fiber. Generally, a CWDM network takes two forms. A point-to-point system connects two locations, muxing and demuxing multiple signals on a single fiber. A loop or multi-point system connects multiple locations, typically using Add/Drop modules.
CWDM MUX and CWDM Demux are designed to multiplex multiple CWDM channels into 1 or 2 fibers. In a hybrid configuration (mux/demux), multiple transmit and receive signals can be combined onto a single fiber. Each signal is assigned an alternative wavelength. At each end, transmit signals are muxed, while receive signals are demuxed. As an example, in a simple full-duplex link, the transmit is assigned the 1530-nm wavelength, even though the receive signal is assigned the 1550-nm wavelength. Additionally, individual signals can be delivered at points along a web link. A receive signal is demuxed in the link, and a new transmit signal is muxed to the link. This application is called an Add/Drop module.
There are some benefits of employing CWDM here.
(1)Increased Bandwidth/Capacity on Existing Fiber
(2)Capacity to Mix Multiple Protocols and Network Speeds On the Same Fiber Infrastructure
(3)Completely Passive Solution ¡§C No Active Equipment or Complicated Configuration
(4)Modular Design Permits Plug and Play and Expansion Provisioning
(5)Attractive Cost
Using FiberStore equipment, you can use two implementations. In a single approach, FiberStore CWDM GBICs (Gigabit Interface Converters) are included with existing Ethernet switch equipment. The GBIC outputs feed FiberStore, CWDM modules. One other approach adds the FiberStore 3001 CWDM Optical Multiplexer System to the existing outputs of existing Ethernet switch equipment. To buy CWDM MUX module and CWDM Demux module from fiber optic products worldwide online store with confidence, please arrived at FiberStore.COM.
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