19 Specialty Optical Fiber © 2014, AFL, all rights reserved. PP-6-00008, Revision 4, 5.7.2020 Specifications are subject to change without notice. AFLglobal.com | 800.235.3423 VHS500 Series Harsh Environment Fibers Verrillon VHS500 is a pure silica core single-mode design with entirely fluorinated cladding available with all Verrillon harsh environment coating combinations, including Polyimide, Silicone-PFA, Silicone-MTA, MTDA and Carbon, which can be applied in conjunction with any of these polymeric coatings. Typically, these fibers are used in downhole distributed sensing techniques for temperature, pressure, acoustics and seismic, as well as in data logging and imaging applications. Our carbon-coated optical fibers provide exceptionally high levels of hermeticity compared to commercial fibers. We provide extensive data that demonstrates the performance of our fiber in simulated well conditions. Consistent with our founding principles, we specialize in application-optimized fibers, providing our customers unmatched flexibility in their system design and performance. Specifications PART NO. SMF-60-CP-125-1 SMF-60-P-125-1 Description 125/155 μm Carbon/Polyimide coated Single-mode fiber, 0.12 NA, 100 kpsi, 1550 nm Operating Wavelength 125/155 μm Polyimide coated Single-mode fiber, 0.12 NA, 100 kpsi, 1550 nm Operating Wavelength PARAMETER VALUE Material Hermetic Coating Carbon — Coating Polyimide Polyimide Geometry Clad Diameter (μm) 125 ± 2 125 ± 2 Clad Non-Circularity (%) < 3 < 3 Core/Clad Offset (μm) < 1.5 < 1.5 Coating Diameter (μm) 155 ± 5 155 ± 5 Polyimide Coating Concentricity 1 (%) ≥ 80 ≥ 80 Optical NA (nominal) 0.12 0.12 Attenuation 2 @ 1550 nm (dB/km) < 0.8 < 0.8 Cutoff Wavelength (nm) < 1530 < 1530 Mode Field Diameter 3 @ 1550 nm (dB/km) 10.0 ± 0.7 10.0 ± 0.7 Mechanical Proof Test (kpsi) > 100 > 100 Operating Temperature (°C) -65 to +300 -65 to +300 1 (Min. Wall/Max. Wall) x 100 2 Measured on loose coil 3 Petermann II Definition Features • Optimized for 1550 nm Single Wavelength Operation • Pure Silica Core chemistry for improved performance in hydrogen-rich environments • Greater than 50x bend loss improvement at 1550 nm over standard SMF • MFD compatible with standard SMF for ease of splicing and minimal splice loss • Available with all Verrillon harsh environment coatings Applications • Downhole in Oil and Gas Industry • Cabling processes with tight bending requirements • Harsh environment, hydrogen-rich applications • Tight bend fiber installations © 2014, AFL, all rights reserved. PP-6-00008, Revision 4, 5.7.2020 Specifications are subject to change without notice. AFLglobal.com | 800.235.3423 20 Specialty Optical Fiber Specifications PART NO. SMF-60-CMTDA-125-1 Description 125/245 μm Carbon Mid-Temp Dual Acrylate, Pure Silica Core, Single-mode fiber, 0.12 NA, 100 kpsi, 1550 nm Operating Wavelength PARAMETER VALUE Material Hermetic Coating Carbon Coating Mid-Temp Dual Acrylate Geometry Clad Diameter (μm) 125 ± 2 Core/Clad Offset (μm) < 1.5 Coating Diameter (μm) 245 ± 15 Optical NA (nominal) 0.12 Attenuation @ 1550 nm (dB/km) < 0.8 Cutoff Wavelength (nm) < 1530 Mode Field Diameter 1 @ 1550 nm (dB/km) 10.0 ± 0.7 Mechanical Proof Test (kpsi) > 100 Operating Temperature (°C) -40 to +150 1 Petermann II Definition VHS500 Series Harsh Environment Fibers Specifications PART NO. SMF-60-CSPFA-125-3 SMF-60-CSPFA-125-7 Description 125/700 μm Carbon/Silicone/PFA coated Single-mode fiber, 0.12 NA, 100 kpsi, 1550 nm Operating Wavelength 125/250 μm Carbon/Silicone/PFA coated Single-mode fiber, 0.12 NA, 150 kpsi, 1550 nm Operating Wavelength PARAMETER VALUE Material Hermetic Coating Carbon Carbon Primary Coating Silicone Silicone Secondary Coating PFA PFA Geometry Clad Diameter (μm) 125 ± 2 125 ± 2 Core/Clad Offset (μm) < 1.5 < 1.5 Combined Coating Diameter (μm) 700 ± 50 250 ± 50 Optical NA (nominal) 0.12 0.12 Attenuation @ 1550 nm (dB/km) < 0.8 < 0.8 Cutoff Wavelength (nm) < 1530 < 1530 Mode Field Diameter 1 @ 1550 nm (dB/km) 10.0 ± 0.7 10.0 ± 0.7 Mechanical Proof Test (kpsi) > 100 > 150 Operating Temperature (°C) -40 to +200 -40 to +200 1 Petermann II Definition