Laser & Optoelectronics Progress, Volume. 48, Issue 8, 81903(2011)
Evolutions of Continuous-Wave Perturbed by Pulse and Generation of Ultra-Short Pulse Trains
Based on the nonlinear Schrdinger equation and the stepped Fourier method, the shape and spectrum evolutions of continuous-wave perturbed by an optical pulse with Gaussian-typed continuum spectrum in an optical fiber are numerically simulated. The results show that, due to modulation instability in the anomalous dispersion region of the optical fiber, this pulse perturbed continuous-wave can also evolve into high-repetition-rate pulse trains, which is similar to the case of sine perturbed one. Being different from the latter case, however, the generated pulses are not equal to each other in terms of widths, intensities, and intervals. When soliton parameters are too small or the optical wave is in the normal dispersion region, only attenuation oscillation structures instead of pulse trains can be generated. And the characteristics of pulse trains or oscillation structures will vary with the soliton parameters. These evolution characteristics are obviously different from those of conventional sine perturbed continuous-waves and Gaussian optical pulses.
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Zhong Xianqiong, Xiang Anping, Cheng Ke, Cai Qing. Evolutions of Continuous-Wave Perturbed by Pulse and Generation of Ultra-Short Pulse Trains[J]. Laser & Optoelectronics Progress, 2011, 48(8): 81903
Category: Nonlinear Optics
Received: Feb. 28, 2011
Accepted: --
Published Online: Jun. 20, 2011
The Author Email: Xianqiong Zhong (zxqlxh@yeah.net)