Due to rapid progress in optical fiber transmission, application in many long distance communication systems is within the scope of demonstrated technology. This paper summarizes the important technical factors which make up a large portion of the system trade-offs. Such items as required repeater power and repeater spacing versus bit rate for PCM are presented.
J. E. Goell,
T. A. Eppes,
"Long Distance Repeatered Fiber Optical Communication Systems", Proc. SPIE 0063, Guided Optical Communications, (6 November 1975); doi: 10.1117/12.954471; https://doi.org/10.1117/12.954471