Tokyo, July 5, 2012 (JCN) - Japan's NTT has developed the world's highest-density multi-fiber optical fiber cable for outdoor optical fiber networks. NTT Labs succeeded in increasing the fiber density of optical fiber cable by using bending loss insensitive optical fiber (BIF) and novel optical fiber ribbon.
The optical fiber cable will be used by NTT East and NTT West in late July. The lighter-weight and smaller-diameter optical fiber cable is expected to contribute toimprovement of the installation workability and effective use of infrastructure.
Outdoor optical fiber cable is installed over several hundred meters. Lighter-weight of optical fiber cable enables improving in the workability of installation, or manual installation without towing machines or installation by fewer workers. The smaller diameter of optical fiber cable further enables the effective use of available space to install optical fiber cable in such conduits.
To expand the spread of FTTH service, NTT Labs has been developed the optical fiber cable with smaller diameter, lighter weight and higher density to achieve effective construction of the optical fiber network.
The fiber cable uses BIF and a novel optical fiber ribbon called "rollable optical fiber ribbon". This cable is composed of rollable optical fiber ribbon with standard 0.25mm diameter coated optical fibers which are intermittently bonded in alongitudinal direction.
By deploying this optical fiber cable to the aerial and a part of the conduit area, it achieves effective construction of an optical fiber network. This cable has 30% smaller diameter and 60% lighter weight than conventional slottedrod type optical fiber cable.
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