Hydrogen darkening
Hydrogen darkening is a physical degradation of the optical properties of glass. Free hydrogen atoms are able to bind to the SiO2 silica glass compound forming hydroxyl (OH) - a chemical compound that interferes with the passage of light through the glass. To prevent this, coatings such as carbon are applied to the fiber, and hydrogen capturing gels are used to buffer the fiber, and other proprietary techniques may be used to prevent hydrogen atoms from reaching the glass fiber via the cable sheath. A recent reference is found here:
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Hydrogen darkening
Hydrogen darkening is a physical degradation of the optical properties of glass. Free hydrogen atoms are able to bind to the SiO2 silica glass compound forming hydroxyl (OH) - a chemical compound that interferes with the passage of light through the glass. To prevent this, coatings such as carbon are applied to the fiber, and hydrogen capturing gels are used to buffer the fiber, and other proprietary techniques may be used to prevent hydrogen atoms from reaching the glass fiber via the cable sheath. A recent reference is found here:
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Hydrogen darkening is a physic ...... ecent reference is found here:
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Hydrogen darkening is a physic ...... ecent reference is found here:
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Hydrogen darkening
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