La fibre multimode à gradient d'indice Verrillon® VHM2000 Series est adaptée aux températures moyennes où le revêtement de carbone constitue une véritable barrière contre la diffusion d'hydrogène qui provoque une absorption optique indésirable dans la région spectrale de fonctionnement de la plupart des capteurs optiques.
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© 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
Caractéristiques :
- Fibre multimode 50/125 à gradient d'indice pour une utilisation dans des environnements difficiles.
- Disponible avec une large gamme de revêtements de protection, en fonction des exigences de l'application.
- Convient pour une utilisation dans des applications à température moyenne VHM2000 avec un revêtement en carbone offre une résistance exceptionnelle à l'infiltration de H2 et d'humidité
- Bande passante élevée (>
300 MHz*km) permettant des mesures DTS avec une résolution spatiale extrêmement courte
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