When deploying a fiber network, everyone wants to know a question: how long it will operate?
Generally, typical life span in Fibre Optic cable can last for years, one to two decades. In addition to the factors of the fiber itself, there are a variety of environmental factors that can affect the life span of optical fiber cable, I will example some below.
Fibre Optics Surface flaws
The first factor is something inherent in the fiber itself, the fiber material pristine silica glass free of defects. It is immensely resistant to degradation as well. Most fibre optic cables will have some surface flaws. This can result in reducing the material's longevity under certain conditions.
Fibre Optics Installation strains
Stress is the major enemy of the longevity of cables, it is very important that the installation process is done carefully by the operative. The installer will ensure that the use of suitable strength elements limits the stress applied to the cable. It is pertinent to mention that the deployment process should not overstrain the cable.
Fibre Optics Environmental factors
The consistency of optical fibers not only relies on the initial fibre strength but is also influenced by time, temperature, applied stress, and environmental corrosion.
– Under permanent or temporary stress over a period of time micro-cracks can grow.
– Extremely High Temperatures may also result in cracks on the cable.
– However water is the most common concern. In most cable designs, the most common environmental factor is the requirement that the cable resist water.
In short, when optical fiber cable is designed, all materials are designed to protect the core of the cable - the optical fiber, in order to increase the life span of optical fiber cable.
Conclusion
The life span of optical fiber cable depends on two parts: the fiber itself and the external environment (including material design and use environment). Fibre optic cables are designed to last for years, if proper installation and maintenance is upheld. The life expectancy can be improved to a great extent if suitable care is applied during installation and post-installation.