scholarly journals Oblique incidence of semi-guided waves on rectangular slab waveguide discontinuities: A vectorial QUEP solver

2015 ◽  
Vol 338 ◽  
pp. 447-456 ◽  
Author(s):  
Manfred Hammer
Keyword(s):  
Oblique Incidence ◽  
Guided Waves ◽  
Slab Waveguide ◽  
Waveguide Discontinuities ◽  
Rectangular Slab

scholarly journals Coupled microstrip-cavities under oblique incidence of semi-guided waves: a lossless integrated optical add-drop filter

OSA Continuum ◽  
2019 ◽  
Vol 2 (11) ◽  
pp. 3288 ◽  
Author(s):  
Lena Ebers ◽  
Manfred Hammer ◽  
Manuel B. Berkemeier ◽  
Alexander Menzel ◽  
Jens Förstner
Keyword(s):  
Oblique Incidence ◽  
Guided Waves ◽  
Integrated Optical

scholarly journals Differentiation of Optical Signals with Dielectric Ridges on Top of a Slab Waveguide

Vestnik RFFI ◽  
2019 ◽  
pp. 35-45
Author(s):  
Victor A. Soifer ◽  
Nikita V. Golovastikov ◽  
Leonid L. Doskolovich ◽  
Evgeni A. Bezus ◽  
Dmitry A. Bykov
Keyword(s):  
Numerical Simulation ◽  
Oblique Incidence ◽  
Spatial Differentiation ◽  
Slab Waveguide ◽  
High Quality ◽  
Optical Signals ◽  
Quality Differentiation ◽  
Analog Computing ◽  
Planar Structures ◽  
Simulation Results

We propose two simple planar structures that enable spatial differentiation of the profile of optical beams propagating in a slab waveguide. The differentiator operating in transmission consists of a single subwavelength dielectric ridge on the surface of a slab waveguide. The differentiator operating in reflection consists of two grooves on the surface of a slab waveguide. In both cases the differentiation is performed at oblique incidence of the beam and is associated with the resonant excitation of the considered structures eigenmodes localized at the ridge or at the ridge between two grooves. It is shown that the required balance between the differentiation quality and the amplitude of the differentiated beam can be achieved by manipulating the quality factor of the resonance. The presented numerical simulation results demonstrate high-quality differentiation. The proposed differentiator may find application in ultrafast analog computing and signal processing systems.

Guiding characteristics of guided waves in slab waveguide with hexagonal boron nitride

2017 ◽  
Vol 122 (3) ◽  
pp. 033103 ◽  
Author(s):  
Hailin Xu ◽  
Xi Wang ◽  
Xing Jiang ◽  
Xiaoyu Dai ◽  
Yuanjiang Xiang
Keyword(s):  
Boron Nitride ◽  
Guided Waves ◽  
Hexagonal Boron Nitride ◽  
Slab Waveguide

Hybrid coupled mode modelling of the evanescent excitation of a dielectric tube by semi-guided waves at oblique angles

2020 ◽  
Vol 52 (11) ◽  
Author(s):  
Manfred Hammer ◽  
Lena Ebers ◽  
Jens Förstner
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Guided Waves ◽  
Strong Field ◽  
Field Enhancement ◽  
Analytic Solutions ◽  
Slab Waveguide ◽  
Dielectric Tube ◽  
Coupled Mode ◽  
Evanescent Excitation

AbstractA dielectric step-index optical fiber with tube-like profile is considered, being positioned with a small gap on top of a dielectric slab waveguide. We propose a 2.5-D hybrid analytical/numerical coupled mode model for the evanescent excitation of the tube through semi-guided waves propagating in the slab at oblique angles. The model combines the directional polarized modes supported by the slab with analytic solutions for the TE-, TM-, and orbital-angular-momentum (OAM) modes of the tube-shaped fiber. Implementational details of the scheme are discussed, complemented by finite-element simulations for verification purposes. Our results include configurations with resonant in-fiber excitation of OAM modes with large orbital angular momentum and strong field enhancement.

scholarly journals Oblique incidence of semi-guided planar waves on slab waveguide steps: effects of rounded edges

2018 ◽  
Vol 26 (14) ◽  
pp. 18621 ◽  
Author(s):  
Lena Ebers ◽  
Manfred Hammer ◽  
Jens Förstner
Keyword(s):  
Oblique Incidence ◽  
Slab Waveguide

Analysis of slab waveguide discontinuities including radiation and absorption effects

1992 ◽  
Vol 28 (11) ◽  
pp. 1013-1015 ◽  
Author(s):  
J. Gerdes ◽  
B. Lunitz ◽  
D. Benish ◽  
R. Pregla
Keyword(s):  
Slab Waveguide ◽  
Waveguide Discontinuities

Nonlinear guided waves in a negative-index slab waveguide

2007 ◽  
Vol 363 (1-2) ◽  
pp. 159-163 ◽  
Author(s):  
S.A. Darmanyan ◽  
A. Kobyakov ◽  
D.Q. Chowdhury
Keyword(s):  
Guided Waves ◽  
Slab Waveguide ◽  
Negative Index
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