Symmetric Mode And Antisymmetric Mode
Plasmonic mode conversion is an important topic for realizing the coupling between conventional optical and plasmonic waveguides, and between plasmonic waveguides. However, the switchable mode conversion between the symmetric and the antisymmetric modes propagating along metal slab waveguides, which are among well-known prototypes of surface plasmon polariton SPP modes, has never been
The second symmetric mode is converted to the fundamental symmetric mode at 3.98902 0.3444 MHz which has changed place due to 'cut-on' resonance between these two modes. The converted second symmetric mode from the fundamental symmetric mode is again converted to the fundamental symmetric mode at 4.453 0.38453 MHz.
The MODE ANALYSIS window is shown in the screenshot below. Symmetricanti-symmetric boundary conditions are used when the user is interested in a problem that exhibits one or more planes of symmetry both the structure and source must be symmetric. antisymmetric boundaries are anti-mirrors for the electric field, and mirrors for the
2. Symmetric mode both left and right sides of the strip move in the same direction at the same time. 3. Antisymmetric mode left and right sides of the strip move in opposite directions at the same time. 4. Torsional mode twisting along the length of the strip. There may be variations of this, and the above modes.
In this paper, we suggested the conversion between the symmetric and the antisymmetric modes by introducing a gyration-managed metal slab waveguide link with the zero-averaged gyration. The symmetric antisymmetric mode can be converted to the antisymmetric symmetric mode with ultrahigh conversion efciency more than 98.
The subscripts of the frequencies S, A, S, and A denote symmetric pitch mode, antisymmetric pitch mode, symmetric yaw mode, and antisymmetric yaw mode, respectively. In addition, the critical frequency ratio CFR, which is analogous to TFR defined in Section 6.2.2, is defined. Critical modes are those modes whose combination causes
The above symmetry rules are helpful when determining the symmetry of modes found with the mode source, and resonant modes of cavities. The following figure shows the Real part of Ex and Ey of a mode that was calculated with the Mode source. The direction of propagation is Z. Notice that Ex has the same sign on each half of the simulation region.
The CLPT overestimated the fundamental anti- symmetric mode group velocity by a factor of two at higher frequency. CLPT also tend to remain constant for the symmetric wave phase velocity and
reflected and transmitted or refracted wave modes. Since the only antisymmetric mode existing at the used excitation frequency is the A 0 mode, this mode will not undergo any mode conversion. On the other hand, a portion of the incident symmetric mode S 0 may undergo mode conversion into the symmetric shear-horizontal mode SH
Coupled-mode equations governing the amplitudes of the higher-order symmetric Lamb modes S1 and S2 with the antisymmetric mode A2 in an infinite elastic plate with sinusoidal surface corrugation over a finite length are obtained via multiple-scales analysis. This phenomenon of threemode coupling is