Abstract
A compact 1.48 μm InGaAsP laser-diode (LD)-pumped erbium-doped optical fiber amplifier (EDFA) was invented in 1989 and it revolutionized optical communication in combination with a wavelength division multiplexing (WDM) technique. Recently, in addition to the existing single-core EDFA, a multi-core EDFA, which employs space division multiplexing (SDM), was developed to increase transmission capacity even further. The first half of this paper describes the evolution of the EDFA from a single-core to a multi-core device and the second half focuses on related topics in optical communication.
Original language | English |
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Pages (from-to) | 862-874 |
Number of pages | 13 |
Journal | Optical Review |
Volume | 21 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2014 Nov 27 |
Keywords
- erbium-doped fiber amplifier
- multi-core fiber
- multi-mode control
- multilevel transmission
- space division multiplexing