Topic
Equilibrium mode distribution
About: Equilibrium mode distribution is a research topic. Over the lifetime, 928 publications have been published within this topic receiving 14939 citations.
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05 Jul 2015
TL;DR: In this paper, the authors investigated the impact of inter-modal four-wave mixing on mode and wavelength division multiplexing (WDM) systems and derived a set of coupled nonlinear Schrodinger equations, including linear mode coupling, allowing to isolate the intermodal 4W mixing terms.
Abstract: In this paper, we investigate the impact of inter-modal four-wave mixing on mode- and wavelength-division-multiplexing systems. A set of coupled nonlinear Schrodinger equations, including linear mode coupling, is derived allowing to isolate the inter-modal four-wave mixing terms. The efficiency of inter-modal four-wave mixing between degenerate LP modes is found to be significantly higher than the intra-modal four-wave mixing efficiency. However, it is shown that the inter-modal four-wave mixing efficiency between degenerate modes is significantly reduced by the linear mode coupling.
2 citations
05 Mar 2006
TL;DR: The constant drive to increase bit rate per channel faces significant challenges due to linear and nonlinear propagation effects as mentioned in this paper, and short pulses increase the sensitivity to dispersion effects including higher order, polarization mode dispersion and fiber nonlinearity.
Abstract: The constant drive to increase bit rate per channel faces significant challenges due to linear and nonlinear propagation effects. Shorter pulses increase the sensitivity to dispersion effects including higher order, polarization mode dispersion and fiber nonlinearity.
2 citations
01 Dec 1991
TL;DR: In this paper, the beam propagation method (BPM) was used to quantitatively show how the asymmetry of Y-branch branches will affect the transmission ratio of the structure in the power dividing or mode splitting operating area.
Abstract: Using Beam Propagation Method (BPM), we show quantitatively how the asymmetry of Y- branches will affect the transmission ratio of the structure in the power dividing or mode splitting operating area In the mode splitting area, radiation loss will increase due to conversion of fundamental mode to higher order modes The mode splitting behavior can be retained even with large branching angle if the phase-front accelerator (PFA) design structure is employed
2 citations
TL;DR: In this article, a theoretical analysis of the relation between transverse mode control and longitudinal mode behavior in the injection lasers which have undoped active regions was given. And the gain saturation was analyzed on the basis of the density matrix equation.
Abstract: Stabilization and control of the operating field mode in injection lasers are very important problems for wider application of the devices. This paper gives a theoretical analysis of the relation between transverse mode control and longitudinal mode behavior in the injection lasers which have undoped active regions. The guided modes are classified into three types, normal guided mode, active guided mode, and leaky mode, owing to guiding mechanism. Cutoff conditions for all types of modes are mentioned. Gain saturation was analyzed on the basis of the density matrix equation. The so-called weakly (partially) inhomogeneous property of the gain saturation was taken into account. The single longitudinal mode operation is expected when the transverse higher modes are in cutoff condition, because the suppression effect among the resonant modes is promoted. The normal guided mode is the most suitable for the single longitudinal mode operation, because the field profile and diffraction loss are invariable with increasing injection current. The transverse mode control is the most important characteristic in obtaining the single longitudinal mode operation in the injection lasers.
2 citations
TL;DR: In this paper, the authors analyzed the modes TE and TM of arbitrarily trapezoidal-groove guide by using the mode-matching method and obtained conclusions of very important significance in theoretical study and practical application of trapeziodalgroove guides for millimeter waves.
Abstract: The modes TE and TM of arbitrarily trapezoidal-groove guide are analyzed by using the mode-matching method. The mode TE11 is the dominant mode of the trapezoidal-groove guide under different conditions. The bandwidth characteristic and the operation condition for the single dominant mode are discussed. The obtained conclusions are of very important significance in theoretical study and practical application of trapeziodal-groove guides for millimeter waves.
2 citations