Title :
Interferometric noise limitations in fibre-amplifier cascades
Author :
Eskildsen, L. ; Goldstein, E.L. ; Andrejco, M. ; Curtis, L. ; Shah, Virali ; Mahoney, Duane ; Zah, C.E. ; Lin, Chong
Author_Institution :
Bellcore, Red Bank, NJ, USA
Abstract :
Phase-induced intensity noise from weak multiple reflectors is evaluated theoretically and experimentally in amplifier cascades without isolators. Rayleigh backscattering alone significantly limits the number of amplifiers in the span. Theory and experiment agree closely for a six-amplifier cascade.
Keywords :
Rayleigh scattering; fibre lasers; noise; optical communication equipment; optical modulation; reflectivity; Er-doped fibre amplifiers; Rayleigh backscattering; Rayleigh reflectivity; direct modulation; external modulation; fibre-amplifier cascades; interferometric noise limitations; optical transmission system; phase-induced intensity noise; power penalty; six-amplifier cascade; weak multiple reflectors;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19931362
