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Proceedings Paper

Nonlinear pulse switching of fiber coupler with two nonidentical cores
Author(s): Liu Min; Ping Shum; Nam Quoc Ngo
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Paper Abstract

To analyze pulse switching in two-nonidentical-core couplers, we derive a pair of new generalized coupled-mode equations that describe the switching dynamics of optical pulses in two nonidentical parallel waveguides by considering dispersive properties of the coupling coefficient. We study the influence of the first-order coupling coefficient dispersion (i.e. intermodal dispersion) on pulse propagation in a directional coupler which consists of two nonidentical cores. It is found that the intermodal dispersion can cause severe pulse distortion and affect the coupler functioning as an optical switch. To show how the pulse switching dynamics are affected by the nonlinearity of the coupler, we study the pulse propagation under different input conditions. It is studied that an increase in the threshold amplitude is obtained for the case of nonidentical cores.

Paper Details

Date Published: 3 September 2002
PDF: 8 pages
Proc. SPIE 4907, Optical Switching and Optical Interconnection II, (3 September 2002); doi: 10.1117/12.482277
Show Author Affiliations
Liu Min, Nanyang Technological Univ. (Singapore)
Ping Shum, Nanyang Technological Univ. (Singapore)
Nam Quoc Ngo, Nanyang Technological Univ. (Singapore)

Published in SPIE Proceedings Vol. 4907:
Optical Switching and Optical Interconnection II
Lih-Yuan Lin; Yimo Zhang; Kimio Oguchi, Editor(s)

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