For Submarine Systems Transmitting at 100 Gb/s and Beyond


TeraWave® SCUBA 125 Ocean Optical Fiber is optimally designed to deliver excellent performance for coherent transport in submarine systems. A combination of ultra-low loss and higher nonlinear performance recommended for the highest spectral efficiency TeraWave SCUBA 125 Ocean Fiber is fully compliant with the ITU G.654.B, D standard for cutoff-shifted fiber and provides outstanding cable performance and design freedom for ocean networks.

Product Description

A breakthrough in ocean fiber technology, TeraWave SCUBA 125 Fibers offers a combination of large effective area, excellent cabling performance in the C- and L-bands, and world-class attenuation. These features enable reliable coherent transmission at 100 Gb/s and beyond over trans-oceanic distances at the highest channel counts. The fiber has a large effective area (125 μm2 ) that reduces nonlinearities, enabling the launch of higher signal power into the span, and ultra-low attenuation that reduces signal loss.

The pure Silica Core and Ultra Big Area features of the TeraWave SCUBA fiber deliver significant margin beyond that needed for transmitting 100 Gb/s over trans-Atlantic distances. The additional margin can be used to upgrade to denser signal constellations for increased spectral efficiency as new transponders become commercially available.

TeraWave SCUBA Fiber is manufactured using OFS’ proprietary manufacturing process, which produces ultra-low polarization mode dispersion (PMD) and exceptional resistance to mechanical stress.


    • Effective area of 125 μm2
    • Enables launch of higher signal power than all G.652 and most G.654.B fibers
    • Enable higher transmission speeds with more wavelengths over trans-oceanic distances
    • Supports polarization-multiplexed, coherent transport using high spectral efficiency modulation formats
    • Proof tested to 200 kpsi to help ensure long-term reliability under extreme conditions
  • Ultra-long haul networks using advanced modulation formats and coherent detection such as transoceanic networks
  • Applications without repeaters, such as coastal festoons and deep-water crossings 
  • POP-to-landing-site connections for submarine cables
Unit of Measure


Single-Mode or Multimode

N/A Single-Mode


N/A Applications without repeaters Ocean - Ultra-long haul networks

Bend Performance

N/A Low Loss Ultra Large Effective Area

Transmission Characteristics

Attenuation @ 1550 nm (nominal)

N/A ≤ 0.156 dB/km

Dispersion @1550 nm (nominal)

N/A 22 ps/(nm·km)
Mode Field Diameter at 15501 N/A 12.3 µm

Effective Area (nominal)

N/A 125 µm2

Cable Cutoff Wavelength (max)

N/A 1530 nm
PMD @ 1550 nm (nominal)2 N/A 0.02 ps/√km

Effective Group Index of Refraction

N/A 1.465 at 1550 nm

Point Discontinuties at 1550 nm

N/A < 0.10 dB

Geometrical Characteristics

Clad Diameter

N/A 125 ± 0.7 µm

Coating Diameter, uncolored

N/A 240 - 250 µm

Coating/Clad Concentricity Error (max)

N/A ≤ 12 µm

Mechanical and Other

Tensile Proof Test (min)

N/A 200 kpsi

Dynamic Fatigue Parameter (Nd)

N/A ≥ 20

Coating Strip Force (Mechanical)

N/A 1.0 to 8.9 N


N/A 24 colors available

Matching Sets

N/A Yes


N/A 50.4 km (Other lengths available upon request) km

Physical Characteristics

Coating Strip Force

N/A 1.0 - 8.9 N

How To Order:

Order From Location

N/A 1 Brightwave Blvd.Carrollton, GA 30117, USA 1-770-798-5555 from outside the USA 1-888-fiberhelp (1-888-342-3743) from inside the USA CARROLLTON LOCATION
  • 1 Lower mode field diameters are available to accommodate specific cable design requirements
  • 2 Low Mode Coupling (LMC) measurements