A new beam propagation method based on the finite element method (FE-BPM) has been developed for the analysis of nonlinear optical waveguides. A formulation for the FE-BPM that is applicable not only to the TE mode but also to the TM mode is presented. Various techniques for enhancing the performanc
Noniterative beam propagation method for optical grating waveguides
β Scribed by Yasuhide Tsuji; Masanori Koshiba
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 115 KB
- Volume
- 81
- Category
- Article
- ISSN
- 8756-663X
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β¦ Synopsis
A noniterative finite element beam propagation method (FE-BPM) with a transmission matrix that can treat reflection waves is described for quasi-TE modes propagating in 3-D optical waveguides. The PadΓ© approximation is used for wide-angle beam propagation analysis, and a new approach for determining the transmission matrix is proposed. To show the validity and usefulness of this noniterative FE-BPM, numerical results are presented for the reflection characteristics of 2-D grating optical waveguides and 3-D optical fiber gratings.
π SIMILAR VOLUMES
The linear time-domain beam propagation method ( ) TDαBPM has been extended to model the propagation of pulsed optical beams in second-order nonlinear optical material of integrated waΒ¨eguides. The coupled nonlinear waΒ¨e equations haΒ¨e been deriΒ¨ed and discretized using the explicit finite-differenc
The perfectly matched layer boundary condition is incorporated into the beam propagation method based on a "nite element scheme for 3-D optical waveguides. Not only an approximate scalar formulation but a full-wave formulation is presented. Its e!ectiveness is veri"ed by way of numerical examples.
Perfectly matched anisotropic absorbers are introduced in two-and three-dimensional beam propagation methods. The anisotropic perfectly matched layer does not require the modification of Maxwell's equations, and can be easily implemented in codes which deal with anisotropic materials. Finite-element