Nonlinear Gain Control of Dispersion-Managed Soliton Amplitude and Collisions

Year: 2000

Authors: Hirooka T., Wabnitz S.

Autors Affiliation: Dept. of Electronics and Info. Syst., Graduate School of Engineering, Osaka University, 2-1, Yamada-oka, Suita, Osaka, 5650871, Japan; Alcatel Corporate Research Center, Route de Nozay, 91460, Marcoussis, France

Abstract: The stabilizing action of nonlinear gain on dispersion-managed soliton transmissions is investigated. By means of a proper combination of nonlinear gain and filtering, the background and amplitude instability introduced by lumped guiding filters can be controlled. Indeed, radiative background that may not be separated from the signal when the average dispersion is close to zero is shown to be suppressed. Taking advantage of the large tolerance with respect to input energy variations, dispersion-managed solitons are found to be stable after collisions among different frequencies when supported by the same nonlinear gain element for all channels. This demonstrates the feasibility of nonlinear gain for wavelength-division-multiplexed transmissions and may open up the possibility of high-speed soliton transmission with large tolerance with respect to power fluctuations and densely packed wavelength channels.


Volume: 6 (2)      Pages from: 109  to: 121

More Information: S.W. thanks G. P. Agrawal for pointing out to him the low-temperature growth technique for fast-responding semiconductor devices. T.H. acknowledges financial support by JSPS Research Fellowships for Young Scientists. S.W. is also with the Laboratorie de Physique, Université de Bourgogne, Dijon, France. We acknowledge partial support of this work from the Centre National d’Etudes de Telecommunications (CNET) in the frame of a contract between CNET and the Universitéde Bourgogne.
KeyWords: Frequencies; Gain control; Optical filters; Solitons; Wavelength division multiplexing, Dispersion-managed (DM) solitons, Optical fibers
DOI: 10.1006/ofte.1999.0325

Citations: 23
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