VHS700 Series Harsh Environment Fibers

Verrillon® VHS700 is an Ultra-Low Bend Sensitivity, harsh environment, hermetically-sealed single-mode optical fiber. It is compatible with standard dual-wavelength (1310/1550 nm) single-mode fiber, with the added benefit of ultra-low bend loss for use in tight bend applications and demanding cable structures. VHS700 is available in all Verrillon’s harsh environment coatings.

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1 Specialty Optical Fiber © 2015, AFL, all rights reserved. PP-6-00010, Revision 2, 5.7.2020 Specifications are subject to change without notice. AFLglobal.com | 800.235.3423 Features • Optimized for 1310/1550 nm Dual Wavelength Operation • Optimized Refractive Index Profile to minimize bend loss • Greater than 20x bend loss improvement at 1550 nm over standard SMF • MFD compatible with standard SMF for ease of splicing and minimal splice loss VHS700 Series Bend-Insensitive Fibers With their optimized optical design, VHS700 fibers are engineered to operate under extremely small bend radii down to 7.5 mm with minimal bend loss at 1550 nm. This low bend loss performance represents more than a 20X improvement over standard single-mode fiber. VHS700’s bend loss exceeds the specifications outlined in the ITU-T G.657.A2 bend loss standard. The ultra- low bend loss provided by VHS700 Series makes it the fiber to use in tight bend applications. It also is designed to be used in cabling applications where there are EFL constraints. Compatible with standard dual-wavelength single-mode fiber, the VHS700 cutoff is <1290 nm and MFD is similar to standard single-mode fiber. This compatibility makes the fiber easy to splice, with minimal splice loss. VHS700 is available with polyimide, silicone-PFA, silicone-MTA, MTA and carbon coatings which allow it to withstand high temperatures and hydrogen-containing atmospheres. Carbon coating can be applied to provide hermeticity against water and hydrogen in downhole applications and for fatigue resistance in long-term deployments. VHS700 is available at prooftest levels of 100 kpsi and 200 kpsi, with other levels available upon request. Specifications PART NO. SMF-12-CMTDA-125-2 SMF-12-MTDA-125-1 SMF-12-CMTDA-125-1 Description 125/245 μm Carbon/Mid-Temp Dual Acrylate Bend Insensitive, Single-mode Fiber, 0.12NA, 200 kpsi 125/245 μm Mid-Temp Dual Acrylate Bend Insensitive, Single-mode Fiber, 0.12NA, 100 kpsi 125/245 μm Carbon/Mid-Temp Dual Acrylate Bend Insensitive, Single-mode Fiber, 0.12NA, 100 kpsi PARAMETER VALUE Material Hermetic Coating Carbon — Carbon Coating Mid-Temp Dual Acrylate Mid-Temp Dual Acrylate Mid-Temp Dual Acrylate Geometry Clad Diameter (μm) 125 ± 1 125 ± 1 125 ± 1 Core/Clad Offset (μm) ≤ 0.5 ≤ 0.5 ≤ 0.5 Coating Diameter (μm) 245 ± 10 245 ± 10 245 ± 10 Optical NA (nominal) 0.12 0.12 0.12 Attenuation 1 @ 1310 nm (dB/km), 1550 nm (dB/km) ≤ 0.4, ≤ 0.25 ≤ 0.4, ≤ 0.25 ≤ 0.4, ≤ 0.25 Cutoff Wavelength (nm) ≤ 1290 ≤ 1290 ≤ 1290 Mode Field Diameter 2 @ 1310 nm (μm), 1550 nm (μm) 8.6 ± 0.4, 9.8 ± 0.6 8.6 ± 0.4, 9.8 ± 0.6 8.6 ± 0.4, 9.8 ± 0.6 Bend Loss 3 @ 1550 nm (dB) ≤ 0.5 ≤ 0.5 ≤ 0.5 Mechanical Proof Test (kpsi) 200 100 100 Operating Temperature (°C) -40 to +150 -40 to +150 -40 to +150 1 Measured on Zero Tension Spool 2 Petermann II Definition 3 One turn on 7.5 mm radius mandrel

Features:

Single-mode waveguide design
Extremely bend insensitive (20X better than standard SMF)
1310 nm and 1550 nm operation
Available with hermetic carbon coating
All Verrillon harsh environment polymeric coatings also available

Applications:

Downhole in Oil and Gas
Cabling where stringent excess fiber length (EFL) is required
Harsh environment applications
Extreme tight bend conditions

With their optimized optical design, VHS700 fibers are engineered to operate under extremely small bend radii down to 7.5 mm with minimal bend loss at 1550 nm. This low bend loss performance represents more than a 20X improvement over standard single-mode fiber. VHS700’s bend loss exceeds the specifications outlined in the ITU-T G.657.A2 bend loss standard. The ultra-low bend loss provided by VHS700 Series makes it the fiber to use in tight bend applications. It also is designed to be used in cabling applications where there are EFL constraints.

Compatible with standard dual-wavelength single-mode fiber, the VHS700 cutoff is <1290 nm and MFD is similar to standard single-mode fiber. This compatibility makes the fiber easy to splice, with minimal splice loss.

VHS700 is available with polyimide, silicone-PFA, silicone-MTA, MTA and carbon coatings which allow it to withstand high temperatures and hydrogen-containing atmospheres. Carbon coating can be applied to provide hermeticity against water and hydrogen in downhole applications and for fatigue resistance in long-term deployments.

VHS700 is available at prooftest levels of 100 kpsi and 200 kpsi, with other levels available upon request.

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