Product category: Cables and Wires
News Release from: Prysmian Cables and Systems | Subject: SM Light
Edited by the Electronicstalk Editorial Team on 26 May 2003
Upgraded performance for single-mode fibre
SM Light is a new, improved single-mode fibre product from Pirelli Telecom Cables and Systems
With single-mode - G.652 - fibre remaining the most widely used fibre in the world, the Fibre Product Management team believed it should be the customers who defined the enhancement of this product. The response was clear; new features that may give a benefit sometime in the future are of little value in today's market.
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What is needed is a fibre with improved performance characteristics, all of them usable from day one, also maintaining their benefits even when used to extend existing networks.
The result is SM Light, a single-mode fibre characterised through to 1625nm, and targeted at enhancing performance for high-bitrate applications, splicing, resistance to bending and external mechanical stresses.
Pirelli had already set new standards for polarisation mode dispersion (PMD) one year ago when it announced a world's best link value of 0.08ps/(rt)km.
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SM Light further distances itself from the rest of the field, achieving a reduction of 0.01 to 0.07ps/(rt)km.
The fibre geometry distribution has been tightened, essential to obtaining a low loss splice performance.
Cladding diameter is 125 +/-0.7um, coating diameter is 245 +/-5um and core/cladding concentricity error stands at a maximum value of 0.5um.
SM Light has also enhanced the bending performance, making the fibre more resistant to the external factors it may encounter during its lifetime.
In fact, the typical microbend value is now 0.6 dB/km/(g/mm) at room temperature (22C).
The fibre is also fully characterised in the L-band up to 1625nm, with attenuation and dispersion values stated in the product specification.
"The message we received from our customers was very clear", said Sergio Antoci, Senior Product Manager, Optical Fibre.
"They wanted a fully optimised G.652 single-mode product giving maximum performance levels at all of today's key parameters.
This outweighed the attractiveness of including any additional performance characteristics for which they currently have no operational need".
SM Light will now be the standard G.652 single-mode fibre in Pirelli cables, joining the range of fibres in the Pirelli product portfolio, such as FreeLight, the long distance G.655 fibre and MagniLight, the low water peak G.652.c fibre for metropolitan applications.
In fact, SM Light has already been chosen for the Indosat Backbone Network, a major project in Indonesia.
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