Light guiding, bending, and splitting via local modification of interfaces of a photonic waveguide

Vashistha, Vishal; Krawczyk, Maciej; Serebryannikov, Andriy E.; Vandenbosch, Guy A. E.

doi:10.1364/ol.44.004725

Cited by 6 publications

(7 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can be called as the symmetric zero-order resonance, for the sake of definiteness. The resonance in Figure 3(b) and (e) represents, in fact, a similar but asymmetric resonance (see Figure 4 in [45] for comparison). Finally, the maps in Figure 3(c) and (f) present nothing else than the case of predominant magnetic dipole resonance behavior being similar to that often observed in nanocylinders of small/moderate height, which have been widely used in the recent metasurface studies [17][18][19].…”

Section: Ultra-wideband and Simultaneously Wide-angle Deflectionmentioning

confidence: 79%

“…The possibility of separation of different (groups of) processes either in the space domain [10] or in the frequency domain [41,42] is often considered as the general condition of multifunctionality, at least when no tunable component is utilized. Various multifunctional scenarios have been demonstrated, which include those with different types of functionalities or different regimes of the same functionality in the neighboring frequency ranges [41][42][43][44][45], at different polarization states [46][47][48][49] or different incidence angles [50,51] at fixed frequency. Merging two functions in one has attracted attention [11,[52][53][54].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A simple Mie-resonator based meta-array with diverse deflection scenarios enabling multifunctional operation at near-infrared

et al. 2020

Self Cite

View full text Add to dashboard Cite

Deflection, a basic functionality of wavefront manipulation is usually associated with the phase-gradient metasurfaces and the classical blazed gratings. We numerically and experimentally demonstrate an unusually wideband and simultaneously wide-angle deflection achieved at near-infrared in reflection mode for a periodic (nongradient), ultrathin meta-array comprising only one silicon nanorod (Mie resonator) per period. It occurs in the range where only the first negative diffraction order and zero order may propagate. Deflection serves as the enabler for multifunctional operation. Being designed with the main goal to obtain ultra-wideband and wide-angle deflection, the proposed meta-array is also capable in spatial filtering and wide-angle splitting. Spatial filtering of various types can be obtained in one structure by exploiting either deflection in nonzero diffraction orders, or the specular-reflection (zero-order) regime. Thus, the role of different diffraction orders is clarified. Moreover, on–off switching of deflection and related functionalities is possible by changing polarization state of the incident wave. The suggested device is simple to fabricate and only requires cost-effective materials, so it is particularly appropriate for the large-area fabrication using nanoprint lithography. Ultra-wideband wide-angle and other deflection scenarios, along with the other functionalities, are promising for applications in optical communications, laser optics, sensing, detection, and imaging.

show abstract

Section: Ultra-wideband and Simultaneously Wide-angle Deflectionmentioning

confidence: 79%

Section: Introductionmentioning

confidence: 99%

A simple Mie-resonator based meta-array with diverse deflection scenarios enabling multifunctional operation at near-infrared

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…The earlier examples of PhC gratings with functionality integration include those yielding one-way splitting, spatial separation of two wave processes, and diodelike asymmetric transmission with opposite directions of strong transmission at two close frequencies 5,21,30 . Examples of similar integration have also been known for other configurations based on PhCs 23,33,34 . Although metasurfaces can suggest electrically thinner performances than PhCs, it is still unclear whether they may replicate all functionalities achievable in PhCs or not.…”

Section: Introductionmentioning

confidence: 75%

“…Multifunctionality in PhC gratings assumes that different wave processes or groups of processes can be separated in space 21 and/or in the frequency domain 5 . The recently proposed metasurfaces offer multifunctional scenarios that include but are not restricted to the ones with different functionalities or different manifestations of the same functionality in the neighboring frequency ranges [22][23][24] , at different incidence angles 17,25 , or at different polarization states [26][27][28] . Two functionalities can be merged into one at a fixed frequency [29][30][31][32] .…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Gratings for Multiband Spatial Filtering, Retroreflection, Splitting and Demultiplexing Based on C2 Symmetric Photonic Crystals

Serebryannikov¹,

Skigin²,

Vandenbosch³

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

The concept of multifunctional reflection-mode gratings based on rod-type photonic crystals with C2 symmetry is introduced and examined. The specific modal properties lead to the vanishing dependence of the first-negative-order maximum on the angle of incidence within a wide range, and the nearly sinusoidal redistribution of the incident-wave energy between zero order (specular reflection) and first negative diffraction order (deflection) at frequency variation that are the key features enabling various functionalities in one structure and functionality merging. The elementary functionalities offered by the studied structures, of which multifunctional scenarios can be designed, include but are not restricted to multiband spatial filtering, multiband splitting, and demultiplexing. The proposed structures are shown to be capable in multifunctional operation in case of an obliquely incident polychromatic wave. The generalized demultiplexing is demonstrated for the case when several polychromatic wavesare incident at different angles. The same deflection properties yield multiband splitting, and merging demultiplexing and splitting functionalties in one functionality, which may contribute to various multifunctional scenarios. The proposed gratings arealso studied in transmissive configuration.

show abstract

“…Both PhC prisms and solid prisms made of a homogeneous material are promising for multichannel circuits with low crosstalk. Noticeably, PhCs remain an excellent platform for new applications [30][31][32]. In spite of the recent progress in metasurfaces and meta-gratings capable in AT [4,22,[33][34][35][36][37], the question of when such quasi-planar structures can and cannot substitute the volume structures remains open.…”

mentioning

confidence: 99%

Evidence of asymmetric beaming in a piecewise-linear propagation channel

et al. 2021

View full text Add to dashboard Cite

Asymmetric beaming in a piecewise-linear propagation channel is demonstrated for a single photonic-crystal prism at Gaussian-beam illumination. The used hybrid refractiondiffraction mechanism exploits oblique incidence, the first-negative-order deflection at the longer interface, and asymmetry in coupling at the exit interfaces and does not need blocking of transmission by dispersion in the backward illumination case. The Floquet-Bloch mode with left-handed behavior and nearly circular equifrequency dispersion contours is utilized. The outgoing waves may have significantly different spatial distributions for the forward and backward illumination cases, yielding asymmetry in the beaming regime.

show abstract

Light guiding, bending, and splitting via local modification of interfaces of a photonic waveguide

Cited by 6 publications

References 33 publications

A simple Mie-resonator based meta-array with diverse deflection scenarios enabling multifunctional operation at near-infrared

A simple Mie-resonator based meta-array with diverse deflection scenarios enabling multifunctional operation at near-infrared

Multifunctional Gratings for Multiband Spatial Filtering, Retroreflection, Splitting and Demultiplexing Based on C2 Symmetric Photonic Crystals

Evidence of asymmetric beaming in a piecewise-linear propagation channel

Contact Info

Product

Resources

About