With the explosive growth of the data communications volume and the urgent demand for the increase of fiber-optic communication system capacity
S-band(1 470~1 539 nm) development has become an important approach for the system capacity expansion.The Er-doped fiber-based development of S-band optical amplifiers is an optimized scheme for developing S-band active devices and realizing communication system capacity expansion.This paper mainly introduces the various implementation schemes for the said amplifier(S-EDFA) and the latest research advances
describes and analyzes S-EDFA experimental set-ups in different configurations