M. Seino, H. Nakajima, I. Sawaki, K. Asama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


A precise design method for waveguide devices such as Ti:LiNbO//3 switch/modulators has been required. These functional waveguides propagate not only guided-mode but also radiation-mode light because of their complex shape and refractive index change profile. The analysis method which can treat radiation-mode light was developed by Feit et al. for multimode fiber and applied to waveguide by Roey et al. We develop a novel analysis method which can treat even radiation-mode using Fourier transforms by introducing virtual modes in a virtual waveguide. The advantage of this method is that the analytical procedure is simplified by changing differential equations into different equations. This method has the potential of high approximation accuracy and design effectiveness for practical waveguide devices.

Original languageEnglish
Title of host publicationUnknown Host Publication Title
EditorsHitoshi Ohzu
Place of PublicationDelft, Ne
PublisherInt Commission for Optics, Organizing Committee
Number of pages2
Publication statusPublished - 1984
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)

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