Modeling and performance analysis of WDM transmission links employing semiconductor optical amplifiers

Abstract

Abstract-We theoretically explored the system limits of various single-and multichannel transmission links employing semiconductor optical amplifiers (SOAs). For this purpose, we developed an accurate model to describe the amplifier dynamics in the moderate and low saturation regimes. Our simulation results revealed the delicate balance among the level of saturation, the signal-tonoise ratio, and the amount of gain per amplifier required for optimum system performance. The modeling results have been confirmed by recent experimental work in this area.Index Terms-Optical communication, semiconductor optical amplifiers (SOAs), wavelength division multiplexing (WDM).

Simulation of DWDM signals using optimum span scheme with cascaded optimized semiconductor optical amplifiers

“…By careful adjustment of operation, SOAs are used for inline amplification of both single and multi channel systems. SOA has use as functional device in the area of long haul optical communication [1].…”

On the output characteristics of a semiconductor optical amplifier driven by an ultrafast optical time division multiplexing pulse train

“…These practical advantages have rendered SOAs indispensable elements for performing a wide set of all-optical signal processing functions, as for example wavelength conversion, demultiplexing, regeneration, Boolean logic, detection and sampling [5][6][7], which are required in order to avoid the cumbersome and power-consuming optoelectronic conversions and fully benefit from the high transmission capacity of lightwave networks [8]. As a result of their increasingly important role, SOAs have attracted considerable theoretical interest and many studies have been conducted to explain their operation, predict their behavior and assist their design [9][10][11][12][13][14][15][16][17][18][19][20][21][22]. Especially, the results reported in [23] have been fundamental in describing pulse propagation and amplification through an SOA and understanding the physical mechanisms that govern this process.…”

Rising and falling time of the amplified pulse after an optical pulse passing through a semiconductor light amplifier

“…[3] through observing its figures carefully. From this diagram, it can also be concluded that the gain asymmetry and shift of the SLA, which has been considered in wavelength conversion or WDM systems [7][8][9] and however is not, to our knowledge, included in investigating the temporal change of the pulse by the SLA, has an important influence on the rising and falling time.…”