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

Ali, M. H.; Abdullah, Fairuz; Jamaludin, M. Z.; Al-Mansoori, M. H.; Abass, A. K.; Al-Mashhadani, Thamer Fahad

doi:10.1080/01468030.2015.1061621

Cited by 20 publications

(7 citation statements)

References 18 publications

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“…An optical spectrum analyzers (OSA) are used to record the Brillouin Stokes power via port 3 of the optical circulator.The DCF based RFA can provide several advantages in comparison with the single mode fiber due to its small effective core area and high germanium concentration. This result in a high Raman gain of 10-20 dB, a high Rayleigh scattering coefficient, and usually, nonlinearity 7-8 times higher than the SMF [7,8]. The gain level and the NF are calculated utilizing a dual port WDM analyzer.…”

Section: Aedfa Modelmentioning

confidence: 99%

Optical Fiber Amplifiers: Optimization and PerformanceEvaluation

Abass¹

2019

Djes

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This work demonstrates the simulation of two different types of optical fiber amplifiers (OFA) utilizing OptiSystem–10, namely, 3 m length of erbium doped fiber amplifier (EDFA) and 7 km length of Raman fiber amplifier (RFA). The counter-pumped architecture is adopted for both proposed optical amplifiers. The optimum pump power (OPP) for each amplifier determines in which the longest 3–dB flat gain bandwidth (3–dB BW), reasonable average gain level (Gav), proper average noise figure (NFav) and lower gain variation (Gvar) were achieved. The EDFA shows best performance at conventional band (C–band) within the pump power of 30 mW.While the better performance is observed at long band (L–band) within the pump power of 600 mW for the RFA.

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Section: Aedfa Modelmentioning

confidence: 99%

Optical Fiber Amplifiers: Optimization and PerformanceEvaluation

Abass¹

2019

Djes

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“…Due to this different tracing of the signal, each configuration has its advantages and disadvantages. In the context, serial design is characterized by a high average gain level (Gav) and an appropriate noise figure (NF), but there is a limitation in gain bandwidth (GB), which considered a primary issue in such configuration, furthermore the power conversion efficiency (PCE) is still insufficient in the RFA stage [7]- [10] While, in parallel design the flatness gain bandwidth can be controlled by setting the signal ratio [11], [12]. In addition, to enhance the gain bandwidth of P-HFOA several approaches have been proposed utilizing the gain control [12], [13] and to solve the dispersion problem in the EDFA branch utilizing the combination between the serial and parallel hybrid fiber amplifiers [14]- [16] in this combination, a second DCF is added to work as a gain medium for the RFA and to compensate the dispersion in the EDFA branch.…”

Section: Introductionmentioning

confidence: 99%

Performance Comparison of Serial and Parallel Hybrid Fiber Amplifier under Optimum Pump Conditions

Khudhaier¹,

Abass²,

Ali³

2022

ETJ

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P-HFOA were simulated and compared at OPP via OptiSystem software.  The S-HFOA has a high average gain and an appropriate NF, but the gain bandwidth is limited.  The P-HFOA has a wide 3-dB gain bandwidth and high saturation power as compared to the S-HFOA.. In this work, two different configurations of hybrid fiber optic amplifiers are investigated and simulated via OptiSystem 7.0 software, namely, serial and parallel hybrid fiber optical amplifiers (S-and P-HFOAs). The investigation involves performance comparison for the S-and P-HFOA under optimum pump conditions to demonstrate the advantages and disadvantages of each configuration.The simulation results show that the serial configuration has a high average gain level of 19.2 dB, an appropriate noise figure about 4.3 dB, but low saturation power, and limited gain bandwidth of approximately 40 nm, which is considered a primary issue in S-HOFA design, in addition to the pump conversion efficiency still insufficient in the Raman amplifier stage. While in P-HFOA design, a wide 3-dB gain bandwidth of more than 60 nm is maintained, along with an average gain level of 13.5 dB, high average noise figure about 8.3 dB and high saturation power due to the absent of cascading effect in parallel configuration.

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“…Raman fiber (RFA) and erbium-doped fiber (EDFA)amplifiers have been combined as a hybrid-fiber amplifier (HFA) by many researchers. The new HFA demonstrates enhanced amplifier performance in terms of large fiber span, wide gain flatness bandwidth, and improved pump efficiency [1,2,3,4]. A serial combination was performed first between the two amplifiers to form a serial hybrid-fiber amplifier (SHFA) [5,6,7,8,9].…”

Section: Introductionmentioning

confidence: 99%

Widely flatness gain bandwidth with double pass parallel hybrid fiber amplifier

et al. 2021

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A Widely flatness gainbandwidth with double pass parallel hybrid fiber amplifier is experimentally demonstrated in this study. The proposed design combines serial erbium-Raman fiber amplifier in one branch and Raman fiber amplifier in the second branch. Multiple Raman pump units with a maximum power of 800 mW (250 mW of 1410 nm, 225 mW of 1480 nm, and 325 mW of 1495 nm) are utilized. Pump recycling technique is applied to achieve acceptable pumping efficiency. A maximum flatness gain bandwidth of 80 nm (1525-1605 nm) and average gain level of 22.5 dB are obtained at a small input signal power of -25 dBm and optimum pump power values. By comparison, a wider flatness gain of 90 nm (1520-1610 nm) and average gain level of 11.5 dB are achieved at a large input signal power of -5 dBm.

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

Cited by 20 publications

References 18 publications

Optical Fiber Amplifiers: Optimization and PerformanceEvaluation

Optical Fiber Amplifiers: Optimization and PerformanceEvaluation

Performance Comparison of Serial and Parallel Hybrid Fiber Amplifier under Optimum Pump Conditions

Widely flatness gain bandwidth with double pass parallel hybrid fiber amplifier

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