• VHM3000 Series Harsh Environment Fibers


    • 50/125 graded-index multimode fiber for harsh environments such as oil wells
    • Excellent resistance to hydrogen darkening at high temperatures and partial pressures of hydrogen
    • High bandwidth allows sensor systems to achieve extremely short spatial resolutions
    • Suitable for downhole temperature monitoring applications
    • Excellent for DTS systems operating in the 1064nm spectral region
    • Available in all Verrillon’s harsh environments coatings including carbon coating


Verrillon® VHM3000 Series is a family of graded-index multimode fibers exhibiting exceptional resistance to hydrogen at high temperatures in hydrogen-rich applications. The true hydrogen resistance is a result of modified glass chemistry. Additionally, the graded-index design provides very high bandwidth for optimum DTS measurement in downhole applications. The VHM3000 Series is available with a variety of Verrillon coatings including Polyimide, Silicone/PFA and Mid-Temp acrylates. Typically, these fibers are used in down-hole data logging, distributed sensing and imaging applications.

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