980/1550nm and 1480/1550nm WDM are widely used in EDFA, Which can combine the pump power and optical signal into the Er-fiber.
Features
Low insertion loss
High isolation
Compact Size
Excellent Stability
Application
Long-haul Uni & Bi-directional Telecommunication System
CATV Systems & Fiber Optic Sensor
Digital, Hybrid And Am-video System