Stationary Solution of Nonlinear Propagation of Femtosecond Optical Pulse by Circuit Model

概要

論文の詳細を見る
A nonlinear wave equation including dispersion over a wide range of the spectrum,is theoretically analyzed, and a stationary' solution is found for a femtoseeond opticalpulse propagation in optical fiber. Solitorn theory for the nonlinear propagation of op-tical pulse was proposed by Hasegawa in 1973. The soliton solution is obtained as tlaestationary eigensolution of the nonlinear Schroedinger equation (NLS). I-Iowever, forshort pulses it becomes invalid over a long distance because of the laigher-ordereffects. In this paper, i) a new wave equation is introduced which includes the higher-order dispersion by an electrical circuit rnodel and the higher-order shock effect, andii) the stationary eigensolution of this equation is derived. The eigenwaveform has thepulse width of 13.8 fs with a fixed amplitude, and the chirping in the peak cor-responds to experimental results in previous studies.
1992-11-15