Cascaded Raman and Intermodal Four-Wave Mixing in Conventional Non-Zero Dispersion-Shifted Fiber for Versatile Ultra-Broadband Continuum Generation

Mondal, Partha; Bhatia, Nitin; Mishra, Vishwatosh; Haldar, Raktim; Varshney, Shailendra K.

doi:10.1109/jlt.2018.2809914

Cited by 7 publications

(1 citation statement)

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“…Зная N 10 и N 20 , решая систему уравнений (9) с учетом начальных условия (11), найдем коэффициенты в разложении заселенностей энергетических уровней по модам волновода [37]      …”

Section: вывод выражений для функции временного отклика и функции раз...unclassified

Spatial and time characteristics of a four-wave radiation converter in a parabolic waveguide with resonant nonlinearity

Vorobeva¹,

Ivakhnik²,

Kapizov³

2023

Computer Optics

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Spatial and temporal characteristics of a degenerate four-wave converter in a multimode waveguide with resonant nonlinearity in a scheme with counter-pumping waves are analyzed using the time response function and the point spread function. For single-mode pump waves with equal mode numbers, the dependences of the time response width on the waveguide length, the intensity of the first pump waves, and the mode number in the mode expansion of the object wave amplitude are obtained for the four-wave converter. The greatest contribution to the object wave amplitude is shown to be from the waveguide mode whose number coincides with the mode number of single-mode pump waves. For the stationary model, taking into account the spatial structure of the Gaussian pump wave leads to a monotonous decrease with a decrease in the pump beam width, followed by a constant value of the PSF module width. With single-mode pump waves with equal mode numbers, An increase in the mode number of the pump waves leads to a redistribution of energy concentrated in the side maxima of the point signal image and improvement in the quality of the wavefront reversal for a model with single-mode pump waves with equal mode numbers.

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Section: вывод выражений для функции временного отклика и функции раз...unclassified