A New Standard in Optimized Bend Performance and Reliable Low Loss Transmission.


AllWave® FLEX ZWP Single-Mode Fiber is the first Zero Water Peak (ZWP) G.652D fiber to offer optimized bend performance for Fiber-to-the-Home (FTTX), enterprise networks, or any application where small bend diameters may be encountered. Fully compliant to the new ITU-T G.657 Class A specification, AllWave® FLEX Fiber is completely compatible with all conventional single-mode fibers.

Product Description

AllWave® FLEX ZWP Fiber maintains very low bending loss across the full spectrum of wavelengths from 1260 to 1625 nm, while ensuring long-term fiber strength and reliability. It can be coiled into a 10 mm radius loop with < 0.5 dB incurred loss at 1625 nm and < 0.2 dB incurred loss at 1550 nm - five times better bend performance than conventional single-mode and leading Low Water Peak (LWP) fibers.

  • Saves space, time, and money through improved bend performance, even for L-Band wavelengths up to 1625 nm: added loss < 0.5 dB (1625 nm) and < 0.2 dB (1550 nm) at 10 mm radius
  • Easier to install, handle, and store in space-constrained applications such as FTTX and premises networks
  • Bend optimized design for tight, low loss bends without risking fiber strength and long-term reliability
  • Tight geometry for very low splice loss and improved connectorization performance with G.652D embedded base
  • Fully compatible with all conventional single-mode fiber international standards including G.657 Class A and G.652D
  • Zero Water Peak fiber provides a 50% increase in usable optical spectrum enabling 16-channel CWDM and DWDM support


AllWave® FLEX ZWP Fiber provides outstanding bend performance and design freedom for fiber management systems in:
  • FTTX
  • The central office
  • High power applications
  • Analog video
  • Microcables
  • Drop cables
  • Closures
  • Field management/storage apparatus located throughout the network
  • At the customer premises
  • Any application with transmission speeds of 40 Gb/s and beyond
Unit of Measure


Single-Mode or Multimode

N/A Single-Mode

Performance Characteristic

N/A G.657.A1


N/A Analog Video Central office Closures Drop Cables FTTx High power applications Microcables Premises

Bend Performance

N/A Bend-Optimized

Standard Reel Lengths

N/A 50.4 km (31.3 miles)

Physical Characteristics

Clad Diameter

N/A 125.0 ± 0.7 µm

Clad Non-Circularity

N/A ≤ 0.7 %

Coating Diameter (Uncolored)

N/A 237 - 247 µm

Coating-Clad Concentricity Error (Offset)

N/A ≤ 12 µm

Tensile Proof Test

N/A 100 kpsi0.69 GPa

Coating Strip Force

N/A Range: 1.0 N ≤ CSF ≤ 8.9 N

Optical Characteristics

Attenuation Uniformity/Point Discontinuities at 1310 and 1550 nm

N/A ≤ 0.05 dB
Macrobend Attenuation1 N/A
The maximum attenuation with bending does not exceed the specified values under the following deployment conditions:
Deployment Condition Wavelength Induced Attenuation
1 turn on a 10 mm radius mandrel1550 nm≤ 0.2 dB
1625 nm ≤ 0.5 dB
10 turns on a 15 mm radius mandrel1550 nm≤ 0.2 dB
1625 nm≤ 0.5 dB
100 turns on 25 mm radius mandrel 1550 nm≤ 0.01 dB
1625 nm≤ 0.05 dB

Zero Chromatic Dispersion Wavelength (λ0)

N/A 1302 to 1322 nm

Zero Chromatic Dispersion Slope (S0)

N/A ≤ 0.092 ps/(nm²·km)

Typical Dispersion Slope

N/A 0.087 ps/(nm²·km)

Group Refractive Index at 1310 nm

N/A 1.467

Group Refractive Index at 1550 nm

N/A 1.468

Mode Field Diameter at 1310 nm

N/A 8.5 to 9.3 µm

Mode Field Diameter at 1550

N/A 9.4 to 10.4 µm

Cable Cutoff Wavelength (λCC)

N/A ≤ 1260 nm

Fiber Polarization Mode Dispersion (PMD) Link Design Value (LDV)

N/A < 0.06 ps/√km

Maximum Individual Fiber - Polarization Mode Dispersion (PMD)

N/A < 0.1 ps/√km

Typical Fiber LMC Polarization Mode Dispersion (PMD)

N/A < 0.02 ps/√km

Environmental Characteristics (At 1310, 1550 & 1625 nm)

Temperature Cycling (-60 to +85 ºC)

N/A ≤ 0.05 dB/km

High Temperature Aging (85 + 2 ºC)

N/A ≤ 0.05 dB/km

Temperature & Humidity Cycling (At -10 to +85 to ~ 98% RH)

N/A ≤ 0.05 dB/km

Water Immersion (23 + 2 ºC)

N/A ≤ 0.05 dB/km

Dynamic Fatigue Stress Corrosion Parameter (nd)

N/A ≥ 20
  • 1 The maximum attenuation with bending does not exceed the specified values under the given deployment conditions.