Flat-gain DFRA design considering pump-to-pump FWM

Aquea, Sebastian Lara; Olivares, Ricardo; Feris, Barbara Dumas

doi:10.1109/icumt.2012.6459733

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…The spontaneous Raman cross section and Raman gain profile for standard silica fiber are shown in Figure 1. The essential difference between spontaneous Raman spectrum and Raman gain profile according to (2) and the data on Figure 1 should be observed in the frequency region of Stokes shift less than 6 THz = 200 cm −1 . In more high-frequency area the thermal density factor of Stokes phonon numbers (>400 cm −1 ) loses its frequency dependence, practically not differing from unit.…”

Section: Fundamentals Of the Spontaneous And Stimulated Light Scatteringmentioning

confidence: 82%

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Noise Gain Features of Fiber Raman Amplifier

Felinskyi

2016

Advances in OptoElectronics

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The formation dynamics of the optical noise in a silica single mode fiber (SMF) as function of the pump power variation in the counter pumped fiber Raman amplifier (FRA) is experimentally studied. The ratio between the power of amplified spontaneous emission and the power of incoherent optical noise is quantitatively determined by detailed analysis of experimental data in the pump powers range of 100–300 mW within the full band of Stokes frequencies, including FRA working wavelengths over the C + L transparency windows. It is found out the maximum of Raman gain coefficient for optical noise does not exceed ~60% of corresponding peak at the gain profile maximum of coherent signal. It is shown that the real FRA noise figure may be considerably less than 3 dB over a wide wavelength range (100 nm) at a pump power of several hundreds of mW.

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Section: Fundamentals Of the Spontaneous And Stimulated Light Scatteringmentioning

confidence: 82%

“…The fiber optic amplifiers based on the effect of stimulated Raman scattering were the first practical devices of nonlinear optics widely used in the high-speed and long distance telecommunication [1,2].…”

Section: Introductionmentioning

confidence: 99%

Noise Gain Features of Fiber Raman Amplifier

Felinskyi

2016

Advances in OptoElectronics

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Few-pumped flat Raman fiber amplifier for parallel distributed FBG-based sensor system

Yang

Liu

2016

Optik

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Robust output control for nonlinear multi-channel systems

Konovalov¹,

Vrazhevsky²,

Furtat³

et al. 2019

Izv. vysš. učebn. zaved., Priborostr.

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Рассматривается задача робастного управления по выходу многоканальным линейным объектом под воздействием неизвестных несогласованных ограниченных возмущений и параметрических неопределенностей. Алгоритм управления основан на совмещении двух методов-бэкстеппинга и вспомогательного контура. Описана итеративная процедура синтеза децентрализованной системы управления с дополнительным включением на каждом шаге специальной динамической системы (вспомогательного контура), которая обеспечивает оценивание и компенсацию неизвестных несогласованных возмущений без использования сильной обратной связи. Представлены результаты практической апробации разработанного алгоритма с использованием лабораторного стенда "Twin Rotor MIMO System".

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Flat-gain DFRA design considering pump-to-pump FWM

Cited by 3 publications

References 2 publications

Noise Gain Features of Fiber Raman Amplifier

Noise Gain Features of Fiber Raman Amplifier

Few-pumped flat Raman fiber amplifier for parallel distributed FBG-based sensor system

Robust output control for nonlinear multi-channel systems

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