6325 Edge Node and 6335 Switch Node WDM Support
Compact, Economical Solution to Turn-up Fiber Capacity
INCREASING BANDWIDTH DEMAND
Both wireline and wireless networks face increasing demand for more transport
bandwidth at lower cost. This is primarily driven by the extensive growth in packetbased
services. The Coriant 6325 and 6335 Node Wavelength Division Multiplexing (WDM) features offer a cost-efficient way to expand fiber capacity in access, metro and regional networks using Coarse Wavelength Division Multiplexing (CWDM) and/or Dense Wavelength Division Multiplexing (DWDM).
The WDM nodes help keep start-up costs at a minimum and at the same time offer a carrier-class solution with extensive OAM and performance monitoring capabilities for easy and reliable operation and maintenance.
EFFICIENT UTILIZATION OF FIBERS
The WDM node technology enables operators to expand the capacity of their existing
fiber infrastructure in a smooth and cost-efficient way. This is especially beneficial for
operators leasing fibers from third parties or those with network elements that cannot
expand to higher capacity cost-efficiently. Leasing additional fibers or inducing more
network elements may be much more costly than adding just another wavelength to
the existing fibers. The WDM nodes are designed for such applications. The 1 or 2RU
nodes can multiplex up to 15 optical wavelengths onto a single pair of fibers.
PAY AS YOU GROW
The WDM nodes offer a cost-efficient solution even when just a few wavelengths are
used. In access/metro applications, the distances between POP sites, or between a
POP site and the end users, are typically not that long. Wavelengths can often pass
several spans without being amplified. All other wavelengths are just passed through.
OPTICAL AMPLIFIERS OR REPEATERS FOR LONG DISTANCES
Even for regional networks with longer distances between sites, the WDM nodes
are a viable choice. DWDM versions of multiplexers can be applied and the line
signal amplified using cost-efficient booster and pre-amplifiers. Using this design, the
WDM nodes can reach up to 140 km on a single span with up to 8 x 10 Gbps DWDM channels.
If it is necessary for a signal to pass several spans over longer distances, the signals
are just repeated in dedicated transponder/repeater modules. This also offers the
possibility of shifting the wavelength and thus gives more flexibility for network
expansion into more complex network topologies than simple links or rings.
