A wavelength of 1270 nm is used to calculate channel insertion loss, link power penalties, and unallocated margin. They are not requirements and are not meant to be tested. 3 Operating distances used to calculate the channel insertion loss are the maximum values. To design an efficient optical data link, you should evaluate the power budget. Proper operation of an optical data link depends on modulated light reaching the receiver with enough power to be correctly demodulated.
Data link efficiency is effected by the losses introduced by splices and connectors.
If the total loss from connectors and splices is smaller than that indicated in these assumptions, then you could use longer optical fiber cable. We strongly recommend that you follow operating distance guidelines. The positive value 0.16 dB indicates that this link has sufficient power for transmission. Using Statistics to Estimate the Power Budget Statistical models more accurately determine the power budget than the worst-case method. Determining the link loss with statistical methods requires accurate knowledge of variations in the data link components.