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Geophysics / Radiations Fibers
 
Home / Products / FIBERS & CABLES / Special Fibers / Harsh Environments/ Geophysics / Radiations Fibers
 
 
description

GeoSil pure silica core fibers are specialized for the harsh environments found in the oil and gas industry. They come in GeoSil single-mode and GeoSil multimode step-index versions.

Why pure silica core?

Distributed Temperature Sensors (DTS) commonly use traditional optical fibers having high germanium concentration within their cores. When deployed in the hydrogen rich down-hole environment, temperatures often exceed 250°C with high pressure. This combination of hydrogen, high temperature and elevated pressure causes hydrogen to diffuse into the core and this leads to high attenuation (optical loss) within the fiber. GeoSil fibers are produced without core dopants, using pure silica instead. As such they are resistant to hydrogen ingression and support long-term operation in hydrogen-rich environments.

Combining pure silica core technology with advanced carbon layering and high temperature PYROCOAT®, OFS provides optical fibers well suited to the harsh environmental needs of oil and gas applications.

   
 
 

Multimodes Fiber

GeoSil-MM fibers, made with a pure silica core, are step-index designs with a 50 μm core and extreme resistance to hydrogen in the Raman band from 1014 to 1114 nm in DTS applications.
The abrasion-resistant and chemically resistant PYROCOAT® polyimide coating allows performance to 300°C.

MAINS APPLICATIONS
:
• Distributed temperature sensing
• High-temperature DTS 
• Datacom in harsh environments 
• Local area networks with elevated temperature requirements
• Radiation environments

 
 
 

Singlemode Fiber

GeoSil-SM fibers, made with a pure silica core and high 0.17 NA, offer extreme resistance to hydrogen plus low bend loss.
The abrasion-resistant and chemically resistant PYROCOAT® polyimide coating allows performance to 300°C for mechanical reliability in the down-hole environment.

MAINS APPLICATIONS
• Distributed temperature sensing
• High-temperature DTS
• Datacom in harsh environments
• Local area networks with elevated temperature requirements
• Radiation environments

 
 
 
 

DATASHEET

 
GeoSil Fibers
 
 
Home / Products / FIBERS & CABLES / Special Fibers / Harsh Environments/ Geophysics / Radiations Fibers
 
 
OUR DETAILS
8 Rue Jean Mermoz, Z.A Saint-Guénault
91080 Courcouronnes - FRANCE
+33 1 69 36 64 32

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