Although there are many kinds of optical fibers, the basic test methods for optical fibers and their transmission systems are basically the same, and the test instruments used are basically the same.

For the grinded optical fiber or optical fiber transmission system, the optical fiber characteristics must be tested to make it conform to the optical fiber transmission channel test standards. The basic test contents include continuity and attenuation/loss, optical fiber input power and output power, analysis of optical fiber attenuation/loss, determination of optical fiber continuity and the location where optical loss occurs, etc. The actual test also includes the length and delay of the optical cable. The optical fiber test index is mainly attenuation. If the attenuation is within the standard range, it is "PASS", otherwise it is "FALL". If there are some problems in the process of testing the optical fiber, we need to check whether the optical fiber grinding is correct and whether the optical fiber heads correspond one by one.

Cabling is an investment for the future, so we must have a sense of foresight when cabling, especially the quality of cabling, because the quality of cabling directly affects the normal operation of the network. Cabling test is an indispensable "threshold" to ensure the normal operation of the network. Only through strict testing can the network system be put into operation.