Model for gain dynamics in erbium-doped fibre amplifiers

Sun, Yan; Luo, Guoping; Zyskind, J.L.; Saleh, A.A.M.; Srivastava, Ashutosh; Sulhoff, J.W.

doi:10.1049/el:19961018

Cited by 81 publications

(25 citation statements)

References 3 publications

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“…Therefore, we use the analytical EDFA model for the calculation. The model is based on the average inversion model [11] and has been extended to include the effect of the ASE and the background loss [12]. We derive the output signal and ASE powers and the required pump power for an average inversion level and the input power as described by (5) and (7) in Appendix, and calculate the NF and the pump power for the SW-EDFA and conventional EDFAs by using these equations.…”

Section: Numerical Analysis Of Pump Power and Noise Figurementioning

confidence: 99%

“…The rate equation for the fractional population of the normalized upper state and the photon propagation equation for the th optical channel are [11] (1) (2) where is the normalized lower/upper state fractional population, is the spontaneous lifetime of the upper level, is the density of the erbium ions, is the fiber core cross-section, and are stimulated emission and absorption cross sections of wavelength , respectively, and is the confinement factor of an EDF at .…”

Section: Appendixmentioning

confidence: 99%

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Wide-Range Variable Gain Fiber Amplifier With Erbium-Doped Fiber Switching

Ono

Watanabe

Suzuki

et al. 2013

J. Lightwave Technol.

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A variable gain erbium-doped fiber amplifier (EDFA) with a wide gain range and a small noise figure (NF) variation is analyzed numerically and demonstrated experimentally. The EDFA can change the total erbium-doped fiber length by selecting six combinations of three EDFs with optical switches (SWs). The numerical calculation of the NF and the pump power using the analytical model of an EDFA indicates that such a variable gain EDFA has an advantage over a conventional multi-stage EDFA in terms of NF variation and required pump power. These characteristics are demonstrated by constructing a variable gain EDFA that employs SWs and variable optical attenuators (VOAs) integrated on a silica-based planar lightwave circuit (PLC). The variable gain EDFA exhibits a smaller NF variation of 1.2 dB for the 24-dB variable gain range than conventional two-and four-stage EDFAs, which have NF variations of 12.6 and 2.0 dB, respectively, for the same variable gain range. The power consumption of these EDFAs is also discussed by comparing the operating electric power of the SWs and VOAs with that of the pump laser.Index Terms-Erbium, optical fiber amplifiers, optical fiber communication, wavelength division multiplexing.

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Section: Numerical Analysis Of Pump Power and Noise Figurementioning

confidence: 99%

Section: Appendixmentioning

confidence: 99%

Wide-Range Variable Gain Fiber Amplifier With Erbium-Doped Fiber Switching

Ono

Watanabe

Suzuki

et al. 2013

J. Lightwave Technol.

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“…We start from the rate equations of criers and photons used in [3], derived assuming a tvo-level system for the dopant ions. The doped ion distribution in the core is considered to be constant.…”

Section: Thite Rymentioning

confidence: 99%

EDFA Gain Dynamics Using Different Concentration Profiles

Darwish

Aly

2006

Proceedings of the Twenty Third National Radio Science Conference (NRSC'2006)

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This paper gives a numerical investigation of the ordinary differential equation (ODE) describing the erbium doped fiber amplifier (EDFA) gain dynamics, bringing into greater evidence the physical meaning of the amplification process, and greatly enhancing the utility of the ODE as an analysis and a design tool. The effects on the amplifier dynamics by several parameters are studied. In addition, a comparative study is presented between different erbium concentration profiles according to their dynamic behavior in order to judge their performance. The optimal doping metlhod, leading to the maximum gain and minimuin settling time, is determined.

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“…Some solutions to mitigate optical amplifiers transients for burst mode PON were successfully demonstrated and are based on a combination of techniques, such as linear gain control, gain clamping and fast automatic gain control [3][4]. Additionally, passive mitigation approaches have also been proposed, such as the use of Erbium doped fibre (EDF) with a large active area of Er 3+ ions [5][6] and also transient equalizers based on silicon-on insulators [7].…”

Section: Introductionmentioning

confidence: 99%

Enhanced optical gain clamping for upstream packet based traffic on hybrid WDM/TDM-PON using fiber Bragg grating

Neto

Klingler

Reis

et al. 2011

Optics Communications

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Abstract:In this paper, we propose a method to mitigate the temporal power transients arising from Erbium doped fiber amplifiers (EDFAs) on packeted/bursty scenario. The technique, applicable on hybrid WDM/TDM-PON for extended reach, is based on a low power clamping provided by a distributed feedback (DFB) laser and a fiber Bragg grating (FBG). An improvement in the data signal Q factor was achieved keeping the clamping control signal with a low power, accompanied by a maximum reduction in the gain excursion of 1.12 dB.

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Model for gain dynamics in erbium-doped fibre amplifiers

Cited by 81 publications

References 3 publications

Wide-Range Variable Gain Fiber Amplifier With Erbium-Doped Fiber Switching

Wide-Range Variable Gain Fiber Amplifier With Erbium-Doped Fiber Switching

EDFA Gain Dynamics Using Different Concentration Profiles

Enhanced optical gain clamping for upstream packet based traffic on hybrid WDM/TDM-PON using fiber Bragg grating

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