Analytic modeling of high-gain erbium-doped fiber amplifiers

Georges, T.; Delevaque, E.

doi:10.1364/ol.17.001113

Cited by 55 publications

(34 citation statements)

References 7 publications

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“…The total pump power is 400 mW. High power amplifiers operating in deep saturation are reported to exhibit gain flattening characteristics [24]. This is evident in this figure from the trend obtained for the higher signal power.…”

Section: Effect Of Bidirectional Pumping On Multichannel Systemsmentioning

confidence: 61%

Influence of bidirectional pumping in high-power EDFA on single-channel, multichannel and pulsed signal amplification

Deepa

Vijaya

2008

Optical Fiber Technology

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Section: Effect Of Bidirectional Pumping On Multichannel Systemsmentioning

confidence: 61%

Influence of bidirectional pumping in high-power EDFA on single-channel, multichannel and pulsed signal amplification

Deepa

Vijaya

2008

Optical Fiber Technology

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“…There are several ways to include such ASE contributions in the model [8], [9], and future work will address this issue. However, the main findings of the present work will be valid as long as the signal powers are large and the main contribution to amplifier saturation.…”

Section: Discussionmentioning

confidence: 99%

“…However we recall that ASE has been neglected in this analysis, and in fact a copropagating pump always gives a larger optical SNR [10]. Equation (5) can be expressed equivalently in terms of the normalized reservoir , also known as the fraction of excited ions [8], [10], (7) This form may be more useful in the study of an isolated amplifier, as the main amplifier parameters are clearly visible in the expression.…”

Section: Theorymentioning

confidence: 99%

“…This happens for the pump first, which is the one providing gain to the channels in normal conditions. Hence, certainly until , i.e., until (8) which is thus an upper bound on the maximum achievable . 1 The actual maximum value of , for a given set of input fluxes , at which the derivative can be zero must be a solution of Saleh's (6).…”

Section: ) Upper Limitmentioning

confidence: 99%

“…There are several methods to include such ASE contributions in the model [8], [9] and future work will address this issue.…”

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confidence: 99%

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Doped-fiber amplifier dynamics: a system perspective

Bononi

Rusch

1998

J. Lightwave Technol.

115

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Abstract-Sun et al.[1] succeeded in reducing the set of coupled first-order nonlinear partial differential equations determining the wavelength-dependent, time-varying amplifier gain into a single ordinary differential equation (ODE). In this paper, we further simplify the ODE bringing into greater evidence the physical meaning of the amplification process, and greatly enhancing the utility of the ODE as an analysis and design tool. We find that the gain dynamics of a doped-fiber amplifier are completely specified by its total number of excited ions r, whose time behavior is described by a simple first-order differential equation. We exploit this new understanding of amplifier gain dynamics: 1) to develop an equivalent circuit model for amplifier gain dynamics, 2) to identify that channel addition causes much faster transients than channel dropping in wavelength division multiplexing networks, and 3) to demonstrate that gain excursions can be significant in multichannel packet switching applications, which unlike timemultiplexed signals are characterized by bursts and lulls in communications. We are also able to revisit the most significant previously published results on both steady-state and dynamic analysis of doped-fiber amplifiers with a much more concise and more intuitive derivation.Index Terms-Doped-amplifier gain dynamics, EDFA, packet switching.

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