Dark Fiber Solutions

Dark fiber is a network infrastructure in its crudest but most flexible form.

The expression dark fiber is used for fiber optical pairs that are not lit, which means it is not connected to equipment. You just get the fiber and no equipment. The customer then "lights up" the fiber by connecting his own equipment. At both end points of a link a so called terminal is installed.  These terminals provide interfaces to the different capacities that are to be transported between the end points.  Amplifiers (or repeaters) are installed every 50 to 130 Km to give the signal the needed power to reach the next amplifier or end point.

The solution consists of end locations or PoPs along the routes which are chosen by the customer.  These PoPs lie in-between the repeater sites which are the standard Pantel locations. The customer co-locates his rack with equipment in these sites within a footprint.

Variations of dark fiber services could be:

• Multiple fibers using one route
• One hole cable dedicated to one customer
• One duct dedicated to one customer
• One route or house entry dedicated to one customer

Pantel can offer G.652 which are the most common one, on all routes and G.655 on the main central European ring.

The network topology is built according to customer needs. The solution can be as single point to point connection, a true ring topology with diverse routes and dual-house entry at the POP sites for full redundancy, or the more cost efficient flat ring topology where the ring is built through the connected equipment but on a single non-diverse route.

The Fiber systems are fully managed by Pantel local supplier team and the O&M is also part of the DF contract.

The base subcategory for a single-mode optical fibre cable - suitable for the transmission systems in ITU-T G.957 (5) and ITU-T G.691 (3) up to STM-16.