EDFA Design and Analysis for WDM Optical Systems Based on Modal Multiplexing

Herbster, Adolfo F.; Romero, Murilo A.

doi:10.1590/2179-10742017v16i1882

Cited by 14 publications

(2 citation statements)

References 14 publications

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“…Because these 12 LP modes are propagated through four parallel paths, a MMEDFA is used as preamplifier. In the previous literatures 41–49 , minimum 200 mW and maximum 15 W of pumping power is needed for EDFA to amplify LP modes. They also do amplification with the various alterations in core and cladding structure of EDFA.…”

Section: Resultsmentioning

confidence: 99%

Power efficient Space Division Multiplexing–Wavelength Division Multiplexing system using multimode EDFA with elevated refractive index profile

Arunachalam

Raju

2021

Int J Communication

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Summary Space division multiplexing (SDM) is an endowment technology to increase the collective bandwidth of multimode transmission in wavelength division multiplexing (WDM) system. In this paper, four wavelength signals from 229.6 to 232.6 THz are transmitted. For each wavelength, three linearly polarized (LP) modes are multiplexed using SDM. These 12 LP modes are transmitted through four parallel Multimode Step Index (MSI) fibers and received by four optical network units (ONUs). A multimode erbium doped fiber amplifier (MMEDFA) with elevated refractive index profile (ERIP) is used as preamplifier to this SDM–WDM system. This ERIP is complying with ITU‐T G.651.1 standard fiber in dispersion performance. The pumping power of 10 mW is adequate for this MMEDFA which is very low and cost effective. LP modes are transmitted, and performance of proposed transmission system is evaluated in terms of spatial electric fields, pumping power requirement, output optical power, and bit error rate (BER).

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Section: Resultsmentioning

confidence: 99%

Power efficient Space Division Multiplexing–Wavelength Division Multiplexing system using multimode EDFA with elevated refractive index profile

Arunachalam

Raju

2021

Int J Communication

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“…In this section, the design optimization of the 2M-EDFA is discussed. A basic SM-EDFA Giles and Desurvire model [10] is extended to describe the propagation of modes in the FM-EDFA [11][12][13][14]. This extended model analyzes the effect of modal shapes of signal, pump and erbium doped profile on performance.…”

Section: Extension Of Giles Model From Sm-edfa To Fm-edfamentioning

confidence: 99%

Evolution of amplified spontaneous emission and characterization of an optimized two-mode EDFA system obtained from an extended analytical model

2020

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An optimized two-mode erbium-doped fiber amplifier (2M-EDFA) system is proposed and evaluated in this paper. The Giles model of a single-mode EDFA is extended to multiple modes. Detailed mathematical analysis of the model indicates that a proper combination of an LP 01 pump and LP 11 pump can equalize the gain of the two modes. The results from mathematical calculations are validated with simulations based on the Runge-Kutta method numerically integrating first-order differential rate equations and propagation equations in the optical domain. Results show that an appropriate LP 01 and LP 11 pump power combination equalizes the gain of the two signal modes to a high value of 27.256 dB. The evolution of the forward-amplified spontaneous emission (ASE) in the designed 2M-EDFA system is investigated. The ASE ratio between the two modes is observed to remain within a factor of 2. The tolerance of the differential modal gain (DMG) with respect to the intrinsic parameters and external operating conditions for the designed 2M-EDFA system is also investigated. In the range of 1530-1560 nm, a modal gain of about 27 dB and ripple of about 0.21 dB are obtained for both modes. This enables transmission of a total of 60 spatial and spectral channels in this range with appropriate spacing. Finally, the immunity of the 2M-EDFA design to the effects of high concentration are investigated.

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