© 2014, AFL, all rights reserved. PP-6-00002, Revision 2, 4.27.2020 Specifications are subject to change without notice. AFLglobal.com | 800.235.3423 16 Specialty Optical Fiber Features • 50/125 graded-index multimode fiber for use in harsh environments • Available with a wide range of protective coatings, depending on application requirements • Suitable for use in mid temperature range applications, VHM2000 with carbon coating provides exceptional resistance to H 2 and moisture ingression • High bandwidth (>300 MHz*km) allow DTS measurements with extremely short spatial resolution VHM2000 Series Harsh Environment Fibers Verrillon VHM2000 Series fibers are designed for mid-temperature range applications. In addition to the glass performance, VHM2000 coated with our hermetic carbon show an exceptional performance in hydrogen-containing applications. VHM2000 is available with a variety of coatings and coating combinations, including Polyimide, Silicone-MTDA and Carbon. Typically, these fibers are used in down-hole temperature and acoustic monitoring, data logging, distributed sensing and imaging applications. Specifications PART NO. MMF-50-3-CP-125-3 MMF-50-3-P-125-3 Description 50/125/155 μm Carbon/Polyimide coated, Graded Index, Multimode Fiber 50/125/155 μm Polyimide coated, Graded Index, Multimode Fiber PARAMETER VALUE Material Hermetic Coating Carbon — Coating Polyimide Polyimide Geometry Core Diameter (μm) 50 ± 2.5 50 ± 2.5 Clad Diameter (μm) 125 ± 2 125 ± 2 Core Non-Circularity (%) < 5 < 5 Clad Non-Circularity (%) < 1 < 1 Core/Clad Offset (μm) < 1.5 < 1.5 Coating Diameter (μm) 155 ± 5 155 ± 5 Polyimide Coating Concentricity 1 > 80 > 80 Optical NA (nominal) 0.20 0.20 Attenuation 2 @ 850 nm (dB/km) < 3.0 < 3.0 Attenuation 2 @ 1300 nm (dB/km) < 1.2 < 1.2 Bandwidth @ 850 nm (MHz-km) > 300 > 300 Bandwidth@ 1300 nm (MHz-km) > 300 > 300 Mechanical Proof Test (kpsi) > 100 > 100 Operating Temperature (°C) -65 to +300 -65 to +300 1 Measured as (Min. Wall/Max. Wall) x 100 2 Measured on loose coil 17 Specialty Optical Fiber © 2014, AFL, all rights reserved. PP-6-00002, Revision 2, 4.27.2020 Specifications are subject to change without notice. AFLglobal.com | 800.235.3423 VHM2000 Series Harsh Environment Fibers Specifications PART NO. MMF-50-3-MTDA-125-3 MMF-50-3-CSMTA-125-3 MMF-50-3-CMTDA-125-3 MMF-50-3-CMTDA-125-4 Description 50/125/245 μm Mid-Temp Dual Acrylate coated, Graded Index, Multimode Fiber 50/125/245 μm Carbon/Si/ Mid-Temp Dual Acrylate, Graded Index, Multimode Fiber 50/125/245 μm Carbon/ Mid-Temp Dual Acrylate coated, Graded Index, Multimode Fiber 50/125/245 μm Carbon/ Mid-Temp Dual Acrylate, Graded Index, Multimode Fiber, 200 kpsi PARAMETER VALUE Material Hermetic Coating — Carbon Carbon Carbon Primary Coating Mid-Temp Dual Acrylate Silicone Mid-Temp Dual Acrylate Mid-Temp Dual Acrylate Secondary Coating Mid-Temp Dual Acrylate Mid-Temp Dual Acrylate Mid-Temp Dual Acrylate Mid-Temp Dual Acrylate Geometry Core Diameter (μm) 50 ± 2.5 50 ± 2.5 50 ± 2.5 50 ± 2.5 Clad Diameter (μm) 125 ± 2 125 ± 2 125 ± 2 125 ± 2 Core Non-Circularity (%) ≤ 5 ≤ 5 ≤ 5 ≤ 5 Clad Non-Circularity (%) ≤ 1 ≤ 1 ≤ 1 ≤ 1 Core/Clad Offset (μm) ≤ 1.5 ≤ 1.5 ≤ 1.5 ≤ 1.5 Combined Coating Diameter (μm) 245 ± 5 245 ± 20 245 ± 5 245 ± 5 Optical NA (nominal) 0.20 0.20 0.20 0.20 Attenuation @ 850 nm (dB/km) ≤ 2.5 ≤ 3.0 ≤ 2.5 ≤ 2.5 Attenuation@ 1300 nm (dB/km) ≤ 0.7 ≤ 1.2 ≤ 0.7 ≤ 0.7 Bandwidth @ 850 nm (MHz-km) > 300 > 300 > 300 > 300 Bandwidth@ 1300 nm (MHz-km) > 300 > 300 > 300 > 300 Mechanical Proof Test (kpsi) > 100 > 100 > 100 > 200 Operating Temperature (°C) -40 to +150 -40 to +150 -40 to +150 -40 to +150 Specifications PART NO. MMF-50-3-SPFA-125-1 MMF-50-3-SPFA-125-6 MMF-50-3-CSPFA-125-5 Description 50/125/700 μm Silicone/PFA coated, Graded Index, Multimode Fiber 50/125/250 μm Silicone/PFA coated, Graded Index, Multimode Fiber 50/125/400 μm Carbon/Silicone/PFA coated, Graded Index Multimode Fiber PARAMETER VALUE Material Hermetic Coating — — Carbon Primary Coating Silicone Silicone Silicone Secondary Coating PFA PFA PFA Geometry Core Diameter (μm) 50 ± 2.5 50 ± 3 50 ± 2.5 Clad Diameter (μm) 125 ± 2 125 ± 2 125 ± 2 Core Non-Circularity (%) ≤ 5 ≤ 5 ≤ 5 Clad Non-Circularity (%) ≤ 1 ≤ 1 ≤ 1 Core/Clad Offset (μm) ≤ 1.5 ≤ 1.5 ≤ 1.5 Combined Coating Diameter (μm) 700 ± 50 250 ± 50 400 ± 50 Optical NA (nominal) 0.20 0.20 0.20 Attenuation 1 @ 850 nm (dB/km) ≤ 3.0 ≤ 3.0 ≤ 3.0 Attenuation 1 @ 1300 nm (dB/km) ≤ 1.2 ≤ 0.8 ≤ 1.2 Bandwidth @ 850 nm (MHz-km) > 300 > 300 > 300 Bandwidth@ 1300 nm (MHz-km) > 300 > 300 > 300 Mechanical Proof Test (kpsi) > 100 > 100 > 100 Operating Temperature (°C) -40 to +200 -40 to +200 -40 to +200 1 Measured on loose coil