New formulation of the coupled mode method for the analysis of chirowaveguides

2002 ◽  
Author(s):  
Alvaro Gomez ◽  
Miguel Angel Solano ◽  
Angel Vegas
Keyword(s):  
Coupled Mode ◽  
Mode Method ◽  
New Formulation

Efficient Modal Analysis of Bianisotropic Waveguides by the Coupled Mode Method

2007 ◽  
Vol 55 (1) ◽  
pp. 108-116 ◽  
Author(s):  
Jaime Pitarch ◽  
Jos M. Catala-Civera ◽  
Felipe L. Penaranda-Foix ◽  
Miguel A. Solano
Keyword(s):  
Modal Analysis ◽  
Coupled Mode ◽  
Mode Method

Erratum: Electromagnetic propagation in unbounded inhomogeneous chiral media using the coupled mode method

2008 ◽  
Vol 50 (4) ◽  
pp. 1132-1132
Author(s):  
Álvaro Gómez ◽  
Ismael Barba ◽  
Ana C. L. Cabeceira ◽  
José Represa ◽  
Angel Vegas ◽  
...  
Keyword(s):  
Chiral Media ◽  
Electromagnetic Propagation ◽  
Coupled Mode ◽  
Mode Method

A CORRECTED SCALAR COUPLED-MODE THEORY FOR THE ANISOTROPIC WAVEGUIDE

2007 ◽  
Vol 21 (02) ◽  
pp. 159-168
Author(s):  
DENG-FENG LI ◽  
HUI-NING DONG ◽  
XIAO-TAO ZU ◽  
YI-SHEN QIU
Keyword(s):  
Refractive Index ◽  
Optical Waveguide ◽  
Coupled Mode Theory ◽  
Mode Theory ◽  
Slab Waveguides ◽  
Coupled Mode ◽  
New Formulation ◽  
Special Case ◽  
Anisotropic Waveguide ◽  
Additional Coupling

A new coupled-mode formulation based on scalar modes is developed for the anisotropic optical waveguide. In the new formulation, the birefringence property of the material is represented as additional coupling to the coupling due to the refractive-index perturbations. The theory is applied to the direction coupler made of parallel slab waveguides. The numerical results show that the numerical value of the birefringence coupling correction is around 10% as much as that of the refractive-index perturbation coupling for the special case.

scholarly journals A coupled-mode method for sound propagation with multiple sources in range-dependent waveguides

2015 ◽  
Vol 45 (1) ◽  
pp. 014301-014301
Author(s):  
WenYu LUO ◽  
RenHe ZHANG ◽  
JiXing QIN ◽  
ChunMei YANG
Keyword(s):  
Sound Propagation ◽  
Multiple Sources ◽  
Coupled Mode ◽  
Mode Method

scholarly journals A coupled-mode method for sound propagation in a range-dependent penetrable waveguide

2013 ◽  
Vol 62 (9) ◽  
pp. 094302
Author(s):  
Yang Chun-Mei ◽  
Luo Wen-Yu ◽  
Zhang Ren-He ◽  
Qin Ji-Xing
Keyword(s):  
Sound Propagation ◽  
Coupled Mode ◽  
Mode Method

scholarly journals An Improved Shock Factor to Evaluate the Shock Environment of Small-Sized Structures Subjected to Underwater Explosion

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Wenzheng Zhang ◽  
Weikang Jiang
Keyword(s):  
Incident Wave ◽  
Cylindrical Shells ◽  
Underwater Explosion ◽  
Spherical Shells ◽  
Coupled Mode ◽  
Scattering Field ◽  
Mode Method ◽  
Nonlinear Relation ◽  
Wave Induced ◽  
The Impact

Shock factor is conventionally used to assess the effect of an underwater explosion on a target. The dimensions of some structures are much smaller than the wavelength of incident wave induced by the underwater explosion. The conventional shock factor may be excessively severe for small-sized structures because it neglects the effect of scattering; so it is necessary to study the shock factor for small objects. The coupled mode method is applied to study the scattering field surrounding the cylindrical shells. A nonlinear relation differential is derived from the impact received by the cylindrical shells and the ratio between the diameters of the shells and the wavelength of the incident wave. An improved shock factor is developed based on the fitted curve, considering the scattering effect caused by the diameters of the submerged cylindrical shells. A set of numerical simulations are carried out to validate the accuracy of the proposed approach. The results show that the cylindrical shells and spherical shells under different conditions, but with the same shock factor, have almost the same shock responses.

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