2 JUNE 2009 - OFS (search Lightwave for OFS), designer, manufacturer, and supplier of fibre-optic network products, says that Telefónica O2 Czech Republic, the telecommunication incumbent in the Czech Republic, will deploy OFS's high-fibre-ribbon optical cable, AccuRibbon DuctSaver, in its metropolitan networks and DuctSaver FX cable in its long-haul network.
According to OFS, the 576-fibre DuctSaver optical cable will give O2 the flexibility to help resolve the capacity demands of its business customers. The 144-fibre DuctSaver FX optical cable will serve as a basis for high-capacity demand created predominantly by the rapid growth of subscriptions for O2's ADSL-based services.
O2 decided 6 years ago to switch its fibre-optic access network from individual fibres to ribbons, but now it is also starting to use 12- and 24-fibre ribbons in its long-haul and metro networks. "Faster installation, lower deployment costs, and rapid repairs are very important points of why we decided to use long-proven OFS ribbon technology," says Antonín Daněk, director for transmission networks.
The AccuRibbon DuctSaver and DuctSaver FX products are small-form ribbon cables designed to offer several advantages over conventional general-purpose OSP cables:
- maximisation of duct space utilisation with high-packing-density cables
- efficiencies and high performance offered by mass fusion splicing
- efficient closure and fibre management system
AccuRibbon DuctSaver is a high-fibre-count ribbon cable with up to 864 fibres in 24-fibre ribbons. The 576-fibre cable will be supplied with OFS's AllWave FLEX ZWP fibre, an optimised singlemode design that combines the original Bell Labs bend-insensitive fibre design with AllWave ZWP performance. In 2008 Telefónica O2 Czech Republic decided to use this fibre type based on several characteristics not achieved with standard matched clad singlemode fibre:
- zero water peak for full-spectrum CWDM applications
- fibre geometries leading to better splice performance
- polarisation mode dispersion (PMD) performance
- G652.D compliance
"Having used depressed clad fibre since 1992, we understand the advantages of this fibre type very well. AllWave FLEX ZWP fibre, with its excellent bending performance, very low loss across the full usable spectrum of wavelengths from 1,260 to 1,625 nm, and low splicing loss, is currently the optimum fibre for our network," concludes Daněk.