In the race to satisfy the global demand for telecommunications bandwidth, the need
for technically advanced, high-capacity networks is paramount. Since 1998, the world
has relied on Corning® LEAF® optical fiber to transmit information at higher bit
rates and over longer distances than ever before.
- The world’s first large effective area, non-zero dispersion-shifted fiber (NZ-DSF)
- Optimized for long-haul and high-data-rate metro networks
- The world’s most widely deployed NZ-DSF
- The industry leader in polarization mode dispersion (PMD) specifications, enabling
evolution from today’s 10 Gb/s networks to the 40 Gb/s systems of the future
- The world’s first low-water-peak NZ-DSF
- In compliance with the industry’s most stringent requirements, including:
- ITU-T G.655 (Tables A, B, C, D)
- IEC Specifications 60793-2-50 Type B4
- TIA/EIA 492-EA00
- Telcordia’s GR-20
Telecommunications networks require high capacity and broad system flexibility in
order to compete today and to meet the challenges of tomorrow. The technological
strength of Corning LEAF optical fiber provides an advanced foundation for today’s
sophisticated networks and those of the future.
Fiber for Today and Tomorrow
With more NZ-DSF in the ground than any other fiber manufacturer in the world, Corning and
Corning LEAF fiber set the standard for long-haul networks. Corning places a strong emphasis on
system performance and is committed to delivering products that enable superior networks now and
in the future. This commitment has led system manufacturers to develop design rules optimized
specifically for LEAF fiber. Low-water-peak attenuation, exceptional transmission capability, moderate
dispersion, outstanding geometry, large Aeff and unique fiber characteristics give LEAF fiber
the advanced functionality and quality required to enable 10 Gb/s, Raman and 40 Gb/s networks.
LEAF fiber’s characteristics also enable extended transmission reach in analog CATV networks.
Over the years, Corning has adapted its fiber product offerings in conjunction with evolving market
needs and industry trends. In addition to being the lowest cost-per-bit solution in digital networks,
LEAF fiber now provides this same advantage to analog networks. This capability is enabled by LEAF
fiber characteristics that allow for a higher stimulated Brillioun scattering (SBS) threshold than standard
single-mode fiber and other ITU-T G.655 fibers with smaller effective area. The SBS threshold is
commonly approached in applications such as analog video transmission. In these applications, LEAF
fiber’s elevated SBS threshold enables higher relative optical powers. Along with the higher SBS, LEAF
fiber’s low chromatic dispersion in the C-band mitigates analog signal intermodulation distortions and
eases the requirements on emerging digital baseband applications. This combination allows LEAF fiber
to support longer distances, improved signal quality and higher signal distribution densities.