Compression Points And Stretching
Compression points must also be avoided because they can permanently deform the light-conducting cross section of the optical fiber.
Light is then lost during transmission.
Pulling fibre-optic cables too tight can also cause compression points as it increases the lateral pressure on the cable. The effect is exaggerated at higher temperatures because the cable straps then become tighter as well. The fiber-optic cable is then constricted, the attenuation increases at that point and function is severely impaired.
Overstretching of fibre-optic cables, caused by pulling for example, can destroy them.
Stretching reduces the cross-sectional area of the fibre core. Restricted passage of light (attenuation) is the result.