The Random Walk of Coherently Amplified Solitons in Optical Fiber Transmission.
01 January 1986
Coherent amplification is always accompanied by the generation of spontaneous emission noise. If solitons in an optical transmission line are coherently amplified, small velocity shifts are created by the nonlinear interaction of the solitons with the noise. This effect can cause timing errors after extended propagation. It becomes important in communications for length-bit rate products of about 25,000 gigahertz-kilometers.