Impact analysis on performance optimization of the hybrid amplifier (RA + EDFA)

Abstract. Hybrid optical amplifiers (HOAs) are crucially important for broadband band amplification, and are widely deployed in high-capacity dense wavelength division multiplexed systems. We summarize the present state-of-the-art in this rapidly growing field. In addition, theoretical background and various inline configurations of optical amplifiers have been presented. Various issues such as gain flatness, gain bandwidth, transient effect, and crosstalk were presented in HOAs. Results show that the HOAs provide better gain flatness without using any expensive gain flattening techniques, and an acceptable range of gain, noise figure, bit error rate, and transience.

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“…Yuan et al 34 introduced a configuration of the hybrid Raman-EDFA. They also produced some restriction conditions to yield the optimum design.…”

Section: Historical Development Of Hybrid Opticalmentioning

confidence: 99%

Review on recent developments in hybrid optical amplifier for dense wavelength division multiplexed system

Singh

Kaler

2015

Opt. Eng

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“…Furthermore, hybrid fiber amplifiers (HFAs) have attracted considerable attention in recent years as a capable and promising technology for future dense wavelength-division multiplexing multi-terabit systems [5][6][7][8][9][10][11] because of their extended span length, reduced fiber non-linearities, expanded gain bandwidth, and enhanced gain flatness [3].…”

Section: Introductionmentioning

confidence: 99%

Effect of Cascading Amplification Stages on the Performance of Serial Hybrid Fiber Amplifier

Ali

Abdullah

Jamaludin

et al. 2015

Fiber and Integrated Optics

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This study demonstrates simulation and experimental validation of a wideband serial hybrid Raman/erbium-doped fiber amplifier. Two configurations are adopted; in type A, a Raman amplifier is the first stage, and in type B, an erbium-doped fiber amplifier is the first stage. At low input signal power, the average gain level is 20 dB with a flat gain bandwidth of 40 nm for both configurations. The noise figure in type B is dominated by the erbium-doped fiber amplifier and produces lower values and flatter spectra than in type A. The gain of the proposed hybrid amplifiers is affected more by the second amplification stage.

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“…Hybrid Raman/erbium-doped fiber amplifiers are an enabling and promising technology for future dense wavelength-divisionmultiplexing (DWDM) multi-terabit systems, as it has been shown by recent experimental results [1][2][3][4][5][6][7]. Hybrid fiber amplifiers are designed to maximize the span length, minimize the impairments caused by fiber nonlinearities, enhance erbium doped fiber amplifier (EDFA) bandwidth, provide sufficient increase in overall signal gain and enhance the pump conversion efficiency [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Simulation and Experimental Validation of Gain-Control Parallel Hybrid Fiber Amplifier

Ali¹,

Abdullah²,

Jamaludin³

et al. 2014

Journal of the Optical Society of Korea

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We demonstrate a simulation of a parallel hybrid fiber amplifier in the C+L-band with a gain controlling technique. A variable optical coupler is used to control the input signal power for both EDFA and RFA branches. The gain spectra of the C+L-band are flattened by optimizing the coupling ratio of the input signal power. In order to enhance the pump conversion efficiency, the EDFA branch was pumped by the residual Raman pump power. A gain bandwidth of 60 nm from 1530 nm to 1590 nm is obtained with large input signal power less than -5 dBm. The gain variation is about 1.06 dB at a small input signal power of -30 dBm, and it is reduced to 0.77 dB at the large input signal power of -5 dBm. The experimental results show close agreement with the simulation results.

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Impact analysis on performance optimization of the hybrid amplifier (RA + EDFA)

Cited by 7 publications

References 10 publications

Review on recent developments in hybrid optical amplifier for dense wavelength division multiplexed system

Review on recent developments in hybrid optical amplifier for dense wavelength division multiplexed system

Effect of Cascading Amplification Stages on the Performance of Serial Hybrid Fiber Amplifier

Simulation and Experimental Validation of Gain-Control Parallel Hybrid Fiber Amplifier

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