The greater the power coupled into the fiber, the longer the distance traveled.

Dispersion

In terms of chromatic dispersion, the larger the chromatic dispersion, the more serious the waveform distortion will be. As the transmission distance becomes longer, the waveform distortion becomes more serious. In a digital communication system, waveform distortion will cause inter-symbol interference, reduce the sensitivity of optical reception, and affect the relay distance of the system.

loss

Including optical fiber active connector loss and splice loss, mainly loss per kilometer. The smaller the loss per kilometer, the smaller the loss and the longer the transmission distance.

Receiver sensitivity

The higher the sensitivity, the lower the received optical power and the longer the distance.