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Proceedings Paper

Unified approach to nonlinear pulse propagation in optical fibers and self-focusing
Author(s): Ajit Kumar
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Paper Abstract

Nonlinear pulse propagation in optical fibers and stationary self-focusing of laser beams in nonlinear media are investigated using the invariant of motion method. It is shown that this method is not only effective for the solution of problems related to nonlinear propagation in quasi-optics but also algebraically simple and yields results faster. In the first case it enables one to follow the dynamical interplay between dispersion and nonlinearity in detaiLthe knowledge of which is essential for applications to soliton based communication system. In the second case,unlike paraxial ray theory ,it takes into account the spatial characteristics of the whole beam and shows that the real critical power for self- focusing should be at least four times the critical power given by paraxial ray theory.

Paper Details

Date Published: 16 December 1992
PDF: 5 pages
Proc. SPIE 1622, Emerging Optoelectronic Technologies, (16 December 1992); doi: 10.1117/12.636917
Show Author Affiliations
Ajit Kumar, Indian Institute of Technology/Delhi (India)


Published in SPIE Proceedings Vol. 1622:
Emerging Optoelectronic Technologies
Krishna Shenai; Ananth Selvarajan; C. Kumar N. Patel; C. N. R. Rao; B. S. Sonde; Vijai K. Tripathi, Editor(s)

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