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One of the biggest challenges faced by network operators is the constant growth in data traffic. Cell phones, streaming, teleworking, mobile commerce, and new LTE services such as wireless broadband demand increasingly more bandwidth, leading to ever greater demands on the backhaul capacity of the network at the same time as it is expensive to add more fiber. Previously, this problem was most prevalent in densely populated areas, but this is also beginning to appear in more sparsely populated areas where there is less fiber available.

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Cube Optics (CUBO) has tackled this fundamental bandwidth exhaust problem applied to telecom, HFC, datacenter and wireless backhaul and access infrastructure. CUBO has assisted many network operators to deploy Coarse Wave Division Multiplexing (CWDM) solutions quickly and efficiently as a proven low cost, quick-to-install, future-compatible and a minimal latency fully protocol interoperable approach for addressing fiber exhaust in the mobile backhaul without the substantial space, power needs of maintenance encumbering active systems.


What is WDM?

WDM is the collective term for CWDM and DWDM (Coarse and Dense Wave Division Multiplexing). In short, this involves sending several signals simultaneously in the same fiber by using different wavelengths. In this way, one singular pair of fibers can transfer over 80 separate channels of traffic, leading to a substantial increase in capacity.

There are two types of WDM systems – passive and active. Passive WDM systems consist of equipment like multiplexers and splitters that do not require electricity. Active systems contain components that need electricity and configuration to function.


Why choose passive WDM?

Sophisticated active fiber optic solutions have the highest capacity, flexibility and range, but will often lead to gross overkill in terms of the technical requirement, CAPEX and OPEX; an active solution can often end up costing 5-10 times that of a passive one. In almost all cases, passive WDM will relieve backhaul bandwidth exhaust cost effectively by accommodating 10Gb/s plus speeds at spans of up to 80km. Our solutions satisfy Telcordia GR-3108 Network operating conditions (-40C to +85C) without need of electrical power.

Our passive WDM solutions are available in a number of form factors from standard 19” racks to ultra-compact, and are suitable for ODFs, junction boxes, data centres, street cabinets etc. both indoors and outdoors. A wide selection of multiplexers and splitters ensures that the solutions can be combined in many ways and be customised to your needs.

Bredengen supplies CWDM and DWDM systems to access and distribution networks, mobile networks, backhaul, fronthaul and broadcast systems. Our xWDM systems are also compatible with our RF- and GPS-over-Fiber systems.

Do you need help?

Walter Stjernstrøm
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