Mode transformation due to double degeneracy in anisotropic-impedance plane waveguide

1983 ◽  
Vol 26 (5) ◽  
pp. 455-462
Author(s):  
V. V. Novikov
Keyword(s):  
Plane Waveguide ◽  
Mode Transformation ◽  
Impedance Plane

scholarly journals Adiabatic mode transformation in width-graded nano-gratings enabling multiwavelength light localization

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Moein Shayegannia ◽  
Arthur O. Montazeri ◽  
Katelyn Dixon ◽  
Rajiv Prinja ◽  
Nastaran Kazemi-Zanjani ◽  
...  
Keyword(s):  
Multispectral Imaging ◽  
Groove Depth ◽  
Surface Enhanced Raman Spectroscopy ◽  
Fine Tuning ◽  
Mode Transformation ◽  
Resonance Modes ◽  
Light Localization ◽  
Metal Insulator Metal ◽  
Surface Enhanced Raman ◽  
Adiabatic Mode

AbstractWe delineate the four principal surface plasmon polariton coupling and interaction mechanisms in subwavelength gratings, and demonstrate their significant roles in shaping the optical response of plasmonic gratings. Within the framework of width-graded metal–insulator-metal nano-gratings, electromagnetic field confinement and wave guiding result in multiwavelength light localization provided conditions of adiabatic mode transformation are satisfied. The field is enhanced further through fine tuning of the groove-width (w), groove-depth (L) and groove-to-groove-separation (d). By juxtaposing the resonance modes of width-graded and non-graded gratings and defining the adiabaticity condition, we demonstrate the criticality of w and d in achieving adiabatic mode transformation among the grooves. We observe that the resonant wavelength of a graded grating corresponds to the properties of a single groove when the grooves are adiabatically coupled. We show that L plays an important function in defining the span of localized wavelengths. Specifically, we show that multiwavelength resonant modes with intensity enhancement exceeding three orders of magnitude are possible with w < 30 nm and 300 nm < d < 900 nm for a range of fixed values of L. This study presents a novel paradigm of deep-subwavelength adiabatically-coupled width-graded gratings—illustrating its versatility in design, hence its viability for applications ranging from surface enhanced Raman spectroscopy to multispectral imaging.

scholarly journals H-Plane Waveguide In-Phase Power Divider/Combiner With High Isolation Over the WR-3 Band

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 22232-22238
Author(s):  
Jie Wang ◽  
Yun Zhao ◽  
Jiang-Qiao Ding
Keyword(s):  
Power Divider ◽  
Plane Waveguide ◽  
High Isolation

Mode transformation properties in the integrated bimodal resonance structure

2021 ◽  
pp. 127187
Author(s):  
Junxue Chen ◽  
Liu Wang ◽  
Xiongping Xia ◽  
Qiuqun Liang ◽  
Runmei Gao
Keyword(s):  
Resonance Structure ◽  
Mode Transformation

Modal vibrations of a cylindrical radiator over an impedance plane

2004 ◽  
Vol 278 (3) ◽  
pp. 461-477 ◽  
Author(s):  
S.M. Hasheminejad ◽  
M. Azarpeyvand
Keyword(s):  
Impedance Plane
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