Classification of optical fiber loss.
August 13 , 2021
The optical fiber loss can be divided into the inherent loss of the optical fiber and the additional loss caused by the service conditions after the optical fiber is made. The details are as follows:
Optical fiber loss can be divided into inherent loss and additional loss.
The inherent loss includes scattering loss, absorption loss and the loss caused by the imperfect structure of optical fiber.
The additional loss includes micro-bending loss, bending loss and connection loss.
Among them, the additional loss is artificially caused in the laying process of optical fiber. In practical application, it is inevitable to connect the optical fiber one by one, and the optical fiber connection will produce loss. The small bending, squeezing and stretching force of optical fiber will also cause loss. These are the losses caused by the use conditions of optical fiber. The main reason is that the transmission mode in the optical fiber core has changed under these conditions. Additional loss can be avoided as far as possible. Next, we will only discuss the inherent loss of optical fiber. In the inherent loss, the scattering loss and absorption loss are determined by the characteristics of the optical fiber material itself, and the inherent loss is different at different working wavelengths. To find out the mechanism of the loss and quantitatively analyze the loss caused by various factors is of great significance for the development of low-loss optical fiber.
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