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Does water damage fibers ?

Though silica is not a hygroscopic material and doesn’t absorb water but moisture and water will cause optical fibers to be deteriorated in long term .

Technicians who are currently installing, maintaining or working continuously with fibers , should have special concern about micro crack or stress corrosion in them .

If optical fibers specially on their splice points be under pressure , effect of moisture in long term will cause flaw or crack grow up gradually till breaking the fiber .

This extreme condition in the fibers will happen in case that all three following ingredients be present :  Flaw , Tension and Moisture

People usually have less knowledge about existence of flaw and tension in fibers which are under service . therefore they should always be careful that Closures are sealed enough to protect fibers against penetration of water and moisture .

For a better monitoring the network , water or aqua-sensor to detect the presence of water inside the closure should also be installed in the closures .

These sensors will immediately act to the presence of water inside the closures so prior facing with any deterioration , will send an alarm signal to the monitoring station for immediate network repairing .

Afshan Cable Co.

Tehran – Iran

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