Rerouting internal power by supplying power in the reverse direction to overcome failure scenarios in submarine cable systems

摘要

System and method for re-routing internal power for reducing voltage requirements of a submarine transmission system. A power supply supplies power to a bridge rectifier circuit (10) the latter biasing a plurality of Zener diodes (11; 12; 13; 14; 15; 16) which are connected in parallel arrangement with respective optical amplifiers (21; 22; 23; 24; 25; 26). The bridge rectifier circuit (10) is arranged such that a first predetermined number of Zener diodes (23; 24; 25; 26) are biased in forward bias direction thus operating as normal diodes with a low voltage drop, whereas a second predetermined number of Zener diodes (21; 22) are biased in reverse or powering direction thus powering respective optical amplifiers. IMAGE