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High-power fiber laser delivery fibers for industrial applications

Optical fibers for geothermal and oil & gas applications rated from cryogenic temperatures up to 500°C

Optical fibers and components for communications

Specialty optical fibers are the fundamental enablers to the devices that make optical communications networks and sensing systems operable by coupling, amplifying, filtering, splitting and combining light signals.

AFL designs and manufactures innovative specialty Verrillon® optical fibers used in optical components and modules. We collaborate closely with our customers to develop fibers and components that improve their system performance, lower manufacturing and material costs, reduce component footprint, expand network functionality and enhance manufacturing process automation.

In addition to custom products, AFL’s Communications Specialty Optical Fibers include coupler fibers, erbium-doped, photosensitive, select cutoff and polarization-maintaining fibers. These products are available in various diameter sizes including 80 µm and 125 µm, as well as a wide range of numerical apertures refractive index profiles and coating combinations.


Traditional fiber coating offering includes materials rated to 150°C (MTDA), 200°C (SPFA) and 300°C (Polyimide).
VSR Series of Ultra-High Solarization-Resistant fiber is designed to transmit light in the Deep UV (DUV) region of the spectrum where standard silica glass suffers significant darkening with attenuation values higher than 2000 dB/km.
VHS100-HiNA Series is a family of small form factor (SFF), bend-insensitive, reduced cladding single-mode fibers designed for harsh environment small packaging applications where tight bend and hydrogen resistance are key requirements.
Verrillon VHT500 is a pure silica core single-mode design with a protective metal coating that allows it to operate at temperatures up to 500°C. Typically, these fibers are used in down-hole data logging for enhanced supercritical geothermal applications, hightemperature oil/gas downhole monitoring using acoustic, strain and temperature sensing, and downstream oil process monitoring.
Verrillon Harsh Environment Fibers from AFL are available in a wealth of designs. The VHT5000 product is a multimode graded-index optical fiber with optimized glass chemistry for high resistance to hydrogen darkening, coupled with a metal coating that allows the fiber to perform at temperatures up to 500°C.
Verrillon® VMM1000 Series of Multimode Fibers from AFL are available in a variety of coatings and coating combinations, including Acrylates, Polyimide, Silicone-PFA and Carbon.
Verrillon® VSS200 Series Single-mode Coupler Fibers from AFL are available in coatings and coating combinations, including Acrylates, Polyimide, Silicone-PFA and Carbon. The WDM 980nm operating coupler fiber has been widely incorporated in EDFAs for optical communications networks.
Verrillon® VSS200 High-Performance Erbium Doped Fibers from AFL are suited for EDFA applications in telecommunnications and sensing. This 980nm-pumped fiber has been widely deployed in the Optical Network worldwide.
Verrillon® VSS200 Series Photosensitive Fiber from AFL exhibits exceptional performance in Fiber Bragg Grating (FBG) writing with extremely short exposure time and near-zero cladding mode loss for high-quality FBGs. These fibers are available with Acrylates, Mid-Temp Acrylate and Silicone-PFA coatings.
The VSS700-BI80 is a Reduced-Diameter Bend-Insensitive Single-Mode 80 μm Cladding Diameter. This fiber was designed to offer Small Form Factor (SFF) and low macrobend-loss for applications requiring compact packaging and tight bending configurations.

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Verrillon Optical Fiber

Margaret Sullivan

+1 (508) 890-7113