OFS Introduces Bend-Optimized Fiber for In-Building Use

  • FTTH
  • Fiber Cable
  • OFS
NORCROSS, GA - Fiber manufacturer OFS enhanced its bend-optimized single-mode fiber product line with the first Zero Water Peak (ZWP) single-mode fiber compliant to the ITU-T G.657.A2 specification. AllWave FLEX+ fiber offers bend performance 20 times better than conventional single-mode fibers and is fully compatible with the installed base of conventional single-mode fiber.

AllWave FLEX+ ZWP fiber is designed for FTTH, cell sites, enterprise networks or any application where small bend diameters are encountered. It complements the existing AllWave FLEX ZWP fiber, which is optimized for bend-challenged cables and drop cables in the outside plant. EZ-Bend Technology fiber enables fast and easy installation of in-residence MDU and home cabling without expensive hardware for bend radius management.

The new fiber maintains very low bending loss across the full usable spectrum of wavelengths from 1260 to 1625 nm. It can be coiled into a 7.5 mm radius loop with <0.5 dB incurred loss at 1550 nm and <1.0 dB incurred loss at 1625 nm. The fiber also offers outstanding bending performance at a 10 mm radius loop, with <0.1 dB incurred loss at 1550 nm and <0.2 dB incurred loss at 1625 nm.


With double the microbending performance of conventional single-mode fibers, it also helps improve cable performance in high-stress and low-temperature environments. In addition, AllWave FLEX+ fiber uses an optimized waveguide design that offers easier, lower-loss fusion splicing than other G.657.A2 fibers. It is fully splice- and performance-compatible with AllWave ZWP fiber, AllWave FLEX ZWP fiber, EZ-Bend Technology fibers, and other conventional single-mode fiber types.

AllWave FLEX+ fiber retains the performance benefits of OFS’ AllWave Zero Water Peak fiber, the first fiber to eliminate the water peak defect found in conventional single-mode fiber. It has stable and permanent low loss, due to OFS’ patented ZWP fiber manufacturing process, which eliminates hydrogen-aging defects. The fiber exhibits unsurpassed geometry control for the lowest splice and connector loss, as well as ultra-low and stable Polarization Mode Dispersion (PMD) for maximum reach and bandwidth.

The macrobending and microbending loss improvements of AllWave FLEX+ fiber help protect the network against excessive loss resulting from inadvertent fiber bends. It is less susceptible to physical disturbances from cable flexing, pulling and crushing, as well as to bending due to routing within enclosures and cabinets.

AllWave FLEX+ fiber enables more compact cabinet and enclosure designs – an important advantage in FTTH applications. For high-bandwidth applications, such as 10 Gbps, 40 Gbps and 100 Gbps wavelength-division multiplexing, the fiber dramatically improves reliability related to system outages caused by fiber bend sensitivity that can threaten service in networks operating at longer wavelengths such as 1550 nm or 1625 nm.

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