The detected signal-to-noise power ratio is evaluated for fiber links with periodic amplification. It is shown that the highest ratio is achieved in the limit of a distributed amplifier (g = α), but that, alternatively, periodic amplification at intervals of α−1 entails a penalty of less than 2 dB compared with the (ideal) distributed case.
© 1990 Optical Society of America
Original Manuscript: March 6, 1990
Manuscript Accepted: May 25, 1990
Published: October 1, 1990
Amnon Yariv, "Signal-to-noise considerations in fiber links with periodic or distributed optical amplification," Opt. Lett. 15, 1064-1066 (1990)