Global Erbium-ytterbium Codoped Double Cladding Fiber Market By Product Type (Single Mode, Multi Mode) And By End-Users/Application (High power Erbium Doped Fiber Amplifiers (EDFAs), Ytterbium/Erbium Doped Fiber Amplifier (YEDFA)) Global Market Share, Forecast Data, In-Depth Analysis, And Detailed Overview, and Forecast, 2013 - 2026