Along with rapid growth of bandwidth need, triplay platform adapts multiple YEDFA instead of traditional EDFA from fiber optic manufacturer.

Theriotically, YEDFA can have max  256 outputs. However, 4-32 output is more often as it meets current need. Factors affects its quality mainly from material, design, heat dispersion, fiber optic connectors loss. Most factories don't take high attenti-on to heat dispersion. "No, we say, because it influences its lifetime so much". if a person got an extremely fever, he'll be died. Same logic n the devices too. Every item passed stricty temperature control before delivery as to guarantee its quality. Our YEDFA can work at least  5-8 years without such issue.

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