CiNii Articles - Langevin noise source

1

Numerical Investigation of Optical Chaotic Multiplexing Communications

Sano Eiichi

… A novel chaotic multiplexing communication system based on a one-way coupled map lattice configuration is proposed and numerically investigated with semiconductor laser rate equations that include the Langevin noise source. …

Jpn J Appl Phys 44(8), 6095-6097, 2005-08-15

The Japan Society of Applied Physics
2

Numerical modeling of Intensity and phase noise in semiconductor lasers

Ahmed Moustafa , Yamada Minoru , Saito Masayuki

… A self-consistent numerical approach is demonstrated to analyze intensity and phase noise in semiconductor lasers. … A new systematic technique is proposed to generate the Langevin noise sources that derive the laser rate equations keeping their cross-correlations satisfied. … The frequency spectra of intensity and phase noise are calculated with help of the fast Fourier transform. …

IEEE J.Quantum Electron 37(12), 1600-1610, 2001-12-00

IR
3

Fractional Langevin Equation to Describe Anomalous Diffusion

KOBELEV V. , ROMANOV E.

… A Langevin equation with a special type of additive random source is considered.This random force presents a fractional order derivative of white noise, and leads to a power-law time behavior of the mean square displacement of a particle, with the power exponent being noninteger.More general equation containing fractional time differential operators instead of usual ones is also proposed to describe anomalous diffusion processes.Such equation can be regarded as corresponding to systems with incomplete …

Progress of theoretical physics. Supplement (139), 470-476, 2000-07-14

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4

The effect of mutual radiation impedance between piston sources in water on active power attenuation. [in Japanese]

Sugimoto Shigeo , Hasegawa Akio , Kikuchi Toshiaki

水中自由空間のアクティブ制御に適用可能な方法、すなわち音源間の相互放射インピーダンスを利用したアクティブパワー制御法が、理論的に、また実験的に研究されている。効果的なアクティブパワー制御システムを実現するために、雑音源に付加音源を近接して配列する。音源間の相互放射インピーダンスが、音源間の距離の関数として計算され、アクティブ制御に及ぼす影響が、幾つかの音源の配列に対して示される。5個のランジュバン …

IEICE technical report. Ultrasonics 93(189), 33-40, 1993-08-20

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5

Canonical Correlation Formalism of an Anharmonic Brownian Oscillator Based on Projection Operator Technique

KONNO Hidetoshi

… Two types of quantal Langevin equations are derived on the basis of thegeneralized Brownian motion theory, which is proposed by Mori, in canonicalcorrelation formalism with the aid of the quantum noise source approach. …

Journal of the Physical Society of Japan 44(5), 1426-1434, 1978-05-15

CiNii Fulltext PDF - Paid The Physical Society of Japan
6

Theory of Stochastic Fluctuations in a Power Reactor

MORISHIMA Nobuhiro

… e. coolant flow-rate, coolant temperature and fuel temperature.In the present paper, a noise source bringing about fluctuations of the coolant flow-rate is assumed to be the most influential among all the noise sources. …

Journal of Nuclear Science and Technology 10(1), 29-44, 1973

J-STAGE CrossRef
7

Effect on Stochastic Fluctuations of Possible Noise Sources in Non-Boiling Liquid Reactors

MORISHIMA Nobuhiro

… (c) where there are fluctuations in the inlet temperature with a non-white spectrum.The noise spectra are derived for various state quantities with use made of the Langevin procedure. …

Journal of Nuclear Science and Technology 10(8), 478-488, 1973

J-STAGE CrossRef
8

On Heat Reservoirs Composed of Simple Cubic Lattices

MUNAKATA Toyonori

… The generalized Langevin equation of Mori for collective motion is used for this purpose. … A new non-equilibrium initial ensemble ρ_0, which is considered to represent the basic notion of a heat reservoir, is introduced to interpret the generalized Langevin equation statistically. …

Progress of theoretical physics 48(4), 1173-1190, 1972-10-25

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9

Experiments on Temperature and Flow Velocity Fluctuation of Coolant and the Possibility of Determination of Noise Source

OKA Yoshiaki , KONDO Shunsuke , AN Shigehiro

… To measure directly the velocity fluctuations in water flow, a newly developed device named "cell flowmeter" was used.A formulation of power reactor noise is presented to examine the noise spectrum distortion in the low frequency region by Langevin's method. …

Journal of Nuclear Science and Technology 9(6), 330-338, 1972

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