Passive Optical LAN infrastructure incorporates single mode fiber cables, its distribution infrastructure, passive (non-powered) optical splitters and two main active electronic components. An optical line terminal (OLT), which typically resides in the data center or equipment room, and an optical network termination (ONT) that ensures a proper communication to and from the end user equipment.
With savings in both capital and operating expenditure, POLAN offers considerably reduced capital expenses in the total cost of ownership. An all-fiber POLAN installation can achieve cost savings of up to 30 – 50 percent in the passive infrastructure, depending on size, on the level of operational comfort and on the amount of redundancy in your LAN. Thus a POLAN network may make sense as an upgrade to a predominantly copper based environment.
A further advantage is that POLAN requires a smaller cabling infrastructure footprint. It moves the access layer electronics towards to the work area, so there is no need for centralized access switches within floor distributors. Hence it has the potential to reduce or even eliminate the need for floor distributors, which in turn frees up floor space for additional working stations.
In addition, smaller and fewer network elements are needed to build the communication infrastructure and space-saving fiber optic cable are replacing bulky copper cable bundles. And this will reduce the thermal load as well. Also, the use of single mode fiber increases the life expectancy of the cabled distribution network dramatically as with the bandwidth demand growing no cabling infrastructure must be replaced.
POLAN is a proven technology with its roots in the fiber to the home GPON technology so it serves with true carrier-grade robustness, reliability, and Quality of Service (QoS). Plus, GPON is a mature technology, designed for simplicity and efficiency, easy to understand and manage.