1. A station useing OEO convertes the customer’multimode signal to a single-mode long-distance signal;
2. The relay station using the signal relay amplification OEO regeneration, and to achieve a single, dual-fiber converter transmission to station B;
3. B station using signal amplification OEO regeneration, and to achieve Single fiber conversion, single multi-mode converters;
1. The use of OEO conversion to multi-mode single-mode, to achieve long distance transmission
2. OEO using 3R designed to regenerate the signal amplification, waveform shaping, clock timing to ensure high quality signal transmission;
3. Single fiber make use OEO conversion, save cable resources to help customers save costs.