Integrated space-division multiplexed (SDM) erbium-doped fiber amplifiers (EDFAs) are not only inevitable for SDM systems, but can be an alternative solution to nowadays EDFA array for parallel amplification. SDM EDFAs are expected to provide substantial complexity and cost savings through spatial-integration compared to duplicating single-mode fiber amplifiers. High output power and low noise figure can be achieved by cladding-pumped SDM EDFAs. In this paper, different cladding pumping solutions, cladding-pumped single-mode and multimode multi-core EDFAs will be discussed.
Haoshuo Chen, Cang Jin, Bin Huang, Nicolas K. Fontaine, Roland Ryf, Ren-Jean Essiambre, Youns Messaddeq, and Sophie LaRochelle, "Integrated optical fiber amplifiers for space-division multiplexed systems," Proc. SPIE 10130, Next-Generation Optical Communication: Components, Sub-Systems, and Systems VI, 1013005 (Presented at SPIE OPTO: January 31, 2017; Published: 28 January 2017); https://doi.org/10.1117/12.2256180.
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