NDLI: Analysis of an intermediate-mode-assisted directional coupler using Bloch theory

Content Provider	IEEE Xplore Digital Library
Author	Kennis, A.M. Vorobeichik, I. Moiseyev, N.
Copyright Year	1965
Abstract	The exact numerical solution of the intermediate-mode-assisted directional coupler problem is obtained using the Bloch wave approach. The approach is based on a calculation of the Bloch waves and their matching with the ideal modes of an uniform waveguide. The approximate results obtained from the paraxial wave equation and from the three-mode model are compared with the exact ones. It is shown that the paraxial approximation, as well as the three-mode approximation, provide only a qualitatively correct physical picture. Using the Bloch wave approach, however, one obtains quantitatively correct results. It is demonstrated that one can control the exchange of power between two distant identical coupled waveguides using an embedded periodic structure along the z direction. The power exchange control is based on a symmetry of Bloch waves and results from the interaction of the lowest order waveguide modes with the high-order modes.
Sponsorship	IEEE Lasers and Electro-Optics Society
Starting Page	563
Ending Page	573
Page Count	11
File Size	362136
File Format	PDF
ISSN	00189197
Volume Number	36
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Directional couplers Optical waveguides Periodic structures Gratings Optical filters Chemical technology Partial differential equations Optical modulation Nonlinear optics Optical refraction
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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