Spatial Beam Filtering with Autocloned Photonic Crystals

Pei-Yu Wang; Yi-Chen Lai; Yu-Chieh Cheng

doi:10.3390/cryst9110585

Spatial Beam Filtering with Autocloned Photonic Crystals

Crystals ◽

10.3390/cryst9110585 ◽

2019 ◽

Vol 9 (11) ◽

pp. 585 ◽

Cited By ~ 1

Author(s):

Pei-Yu Wang ◽

Yi-Chen Lai ◽

Yu-Chieh Cheng

Keyword(s):

Photonic Crystals ◽

Spatial Filtering ◽

Spectral Width ◽

High Potential ◽

Multilayered Structures ◽

Spatial Beam ◽

Integrated Optical ◽

Potential Applications

We have been numerically demonstrated the mechanism of spatial beam filtering with autocloned photonic crystals. The spatial filtering through different configurations of the multilayered structures based on a harmonically modulated substrate profile is considered. The paper demonstrates a series of parameter studies to look for the best spatial beam filtering performance. The optimization results show that a beam spectral width of 39.2° can be reduced to that of 5.92°, leading to high potential applications for integrated optical microsystems.

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Design of integrated optical circulator based on photonic crystals

Optik ◽

10.1016/j.ijleo.2014.01.125 ◽

2014 ◽

Vol 125 (14) ◽

pp. 3587-3589 ◽

Cited By ~ 3

Author(s):

H.R. Dehghanpour ◽

H. Alisafaee ◽

S.M. Molavi Arabshahi

Keyword(s):

Photonic Crystals ◽

Integrated Optical ◽

Optical Circulator

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Experimental demonstration of waveguides in arrayed-rod photonic crystals for integrated optical buffers

OFC/NFOEC Technical Digest. Optical Fiber Communication Conference, 2005. ◽

10.1109/ofc.2005.192720 ◽

2005 ◽

Author(s):

M. Tokushima

Keyword(s):

Photonic Crystals ◽

Experimental Demonstration ◽

Optical Buffers ◽

Integrated Optical

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WAVELENGTH DEMULTIPLEXING IN METAL–INSULATOR–METAL PLASMONIC WAVEGUIDES

Modern Physics Letters B ◽

10.1142/s0217984914500250 ◽

2014 ◽

Vol 28 (04) ◽

pp. 1450025 ◽

Cited By ~ 3

Author(s):

XIANKUN YAO

Keyword(s):

Transmission Efficiency ◽

Plasmonic Waveguides ◽

Metal Insulator ◽

Metal Insulator Metal ◽

Integrated Optical ◽

Potential Applications ◽

Wavelength Demultiplexing ◽

Optical Circuits ◽

Difference Time ◽

Mim Waveguide

In this paper, we have numerically investigated a novel kind of ultra-compact wavelength demultiplexing (WDM) in high-confined metal–insulator–metal (MIM) plasmonic waveguides. It is found that the drop transmission efficiency of the filtering cavity can be strongly enhanced by introducing a side-coupled cavity in the MIM waveguide. The theoretical analysis is verified by the finite-difference time-domain simulations. Through cascading the filtering units, a highly effective triple-wavelength demultiplexer is proposed by selecting the specific separation between the two coupled cavities of filtering units. Our results may find potential applications for the nanoscale WDM systems in highly integrated optical circuits and networks.

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

10.21203/rs.3.rs-948548/v1 ◽

2021 ◽

Author(s):

Andriy E. Serebryannikov ◽

Diana C. Skigin ◽

Guy A. E. Vandenbosch ◽

Ekmel Ozbay

Keyword(s):

Photonic Crystals ◽

Specular Reflection ◽

Diffraction Order ◽

Spatial Filtering ◽

Frequency Variation ◽

Angle Of Incidence ◽

Reflection Mode ◽

Negative Order ◽

Wide Range ◽

Incident Wave Energy

Abstract 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.

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Integrated Optics in Astronomical Interferometry

Symposium - International Astronomical Union ◽

10.1017/s0074180900107715 ◽

1994 ◽

Vol 158 ◽

pp. 261-271 ◽

Cited By ~ 5

Author(s):

V. Coudé du Foresto

Keyword(s):

Integrated Optics ◽

Single Mode ◽

Spatial Filtering ◽

Coherent Beam ◽

Optical Components ◽

Polarization Behavior ◽

Integrated Optical ◽

Fringe Tracking ◽

And Control

Integrated optical components (mostly single-mode fibers and couplers) can be used to achieve several functions that are needed in interferometry: coherent beam transportation and recombination, pathlength modulation and control for fringe tracking and double Fourier interferometry, spatial filtering of the wavefront and interferogram calibration. Their potential is assessed and the main problems encountered in their implementation are discussed: dispersion, polarization behavior, and especially starlight injection.

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Photonic crystal for graphene plasmons

Nature Communications ◽

10.1038/s41467-019-12778-2 ◽

2019 ◽

Vol 10 (1) ◽

Cited By ~ 13

Author(s):

L. Xiong ◽

C. Forsythe ◽

M. Jung ◽

A. S. McLeod ◽

S. S. Sunku ◽

...

Keyword(s):

Photonic Crystal ◽

Photonic Crystals ◽

Light Propagation ◽

Oxide Semiconductor ◽

Graphene Monolayer ◽

Light Manipulation ◽

Integrated Optical ◽

On Chip ◽

Nano Imaging ◽

Two Dimensional Photonic Crystal

Abstract Photonic crystals are commonly implemented in media with periodically varying optical properties. Photonic crystals enable exquisite control of light propagation in integrated optical circuits, and also emulate advanced physical concepts. However, common photonic crystals are unfit for in-operando on/off controls. We overcome this limitation and demonstrate a broadly tunable two-dimensional photonic crystal for surface plasmon polaritons. Our platform consists of a continuous graphene monolayer integrated in a back-gated platform with nano-structured gate insulators. Infrared nano-imaging reveals the formation of a photonic bandgap and strong modulation of the local plasmonic density of states that can be turned on/off or gradually tuned by the applied gate voltage. We also implement an artificial domain wall which supports highly confined one-dimensional plasmonic modes. Our electrostatically-tunable photonic crystals are derived from standard metal oxide semiconductor field effect transistor technology and pave a way for practical on-chip light manipulation.

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Self-Collimation in Square Lattice Two Dimensional Photonic Crystals with Ring-Shaped Holes

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.110-116.1024 ◽

2011 ◽

Vol 110-116 ◽

pp. 1024-1029

Author(s):

Quan Xu ◽

Kang Xie ◽

Hua Jun Yang

Keyword(s):

Photonic Crystals ◽

Fdtd Method ◽

Three Dimensional ◽

Square Lattice ◽

Surface Modes ◽

Input Surface ◽

High Efficient ◽

Integrated Optical ◽

New Type ◽

Efficient Coupling

We demonstrate self-collimation phenomena based on a new type of photonic crystals made of square lattice with ring shaped holes. The plane wave expansion (PWE) method is used to get the three dimensional band diagram and equi-frequency of the second band which displays the self-collimation phenomena for the structure we proposed in this paper. The collimation angle is mainly depending on the maximum flatness half width (MFHW) of the equi-frequency. The FDTD method is employed to demonstrate the electric field amplitude distributions for the collimation phenomena. Partly, in order to achieve high efficient coupling of the input and output port, we modify both surface structures to modulate the wave-front to obtain desired effect. The parameter of the input surface is modified which will prevent the production of surface modes which takes away the EM power and enhance the transmittance. For a square lattice with the modified parameters at each side of the input surface, the surface modes are suppressed to couple with the continuum of the dielectric waveguide modes. More importantly, they might have potential application in integrated optical circuits.

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