Single–Band and Multiband Angular Filtering Using Two–Dimensional Photonic Crystals and One–Layer Gratings

Serebryannikov, Andriy E.; Özbay, Ekmel

doi:10.1007/978-3-319-58403-4_23

“…Due to the periodic nature of PCs, they exhibit PBGs in all directions, acting as ideal mirrors for incident light waves. This property holds potential applications in different fileds suchas lasers [2], filters [3,4], optical waveguides [5][6][7][8][9], optical fibers [10][11][12], all-optical logic gates [12][13][14][15][16], biosensors [17][18][19], splitters [20,21], imaging [22] and all-optical analog to digital converters [23,24]. Also, PCs photonic crystals have found a highly practical application in the field of all-optical logic gates, garnering substantial attention because of their versatility in various all-optical signal processing applications.…”

Section: Introductionmentioning

confidence: 99%

High-Speed Photonic Decoder Employing Two-Dimensional Photonic Crystals

Esmaeili,

Daghighazar,

Chaharmahali

2023

Preprint

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The objective of this study is to design, analyze, and simulate a novel and ultrafast 1 × 2 photonic decoder. The device is composed of two-dimensional (2D) photonic crystals where silicon rods are placed in air. It includes two beam splitters and a phase shifter, which are implemented using point defects. Additionally, line defects are integrated into the device to steer the light wave without causing dissipation. The simulation yielded 0.1 ps response time, contrast ratio of 2.55 dB, and a bit rate of 0.66 Tb/s. The simulation was performed using 2D finite difference time domain and plane wave expansion methods. The findings suggest that this device holds great potential as a candidate for all-optical digital integrated circuits.

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High-speed photonic decoder employing two-dimensional photonic crystals

Esmaeili,

Daghighazar,

Chaharmahali

et al. 2024

Opt Quant Electron

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The objective of this study is to design, analyze, and simulate a novel and ultrafast 1 × 2 photonic decoder. The device is composed of two-dimensional (2D) photonic crystals where silicon rods are placed in air. It includes two beam splitters and a phase shifter, which are implemented using point defects. Additionally, line defects are integrated into the device to steer the light wave without causing dissipation. The simulation yielded 0.1 ps response time, contrast ratio of 2.55 dB, and a bit rate of 0.66 Tb/s. The simulation was performed using 2D finite difference time domain and plane wave expansion methods. The findings suggest that this device holds great potential as a candidate for all-optical digital integrated circuits.

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Temperature-mediated invocation of the vacuum state for switchable ultrawide-angle and broadband deflection

Serebryannikov

¹

,

Lakhtakia

²

,

Aalizadeh

³

et al. 2018

Sci Rep

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Temperature-mediated appearance and disappearance of a deflection grating in a diffracting structure is possible by employing InSb as the grating material. InSb transits from the dielectric state to the plasmonic state in the terahertz regime as the temperature increases, this transition being reversible. An intermediate state is the vacuum state in which the real part of the relative permittivity of InSb equals unity while the imaginary part is much smaller. Then the grating virtually disappears, deflection being impossible as only specular reflection can occur. This ON/OFF switching of deflection and relevant angular filtering are realizable over wide ranges of frequency and incidence angle by a temperature change of as low as 20 K. The vacuum state of InSb invoked for ON/OFF switching of deflection and relevant angular filtering can also be obtained for thermally tunable materials other than InSb as well as by using non-thermal mechanisms.

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Single–Band and Multiband Angular Filtering Using Two–Dimensional Photonic Crystals and One–Layer Gratings

Cited by 3 publications

References 40 publications

High-Speed Photonic Decoder Employing Two-Dimensional Photonic Crystals

High-Speed Photonic Decoder Employing Two-Dimensional Photonic Crystals

High-speed photonic decoder employing two-dimensional photonic crystals

Temperature-mediated invocation of the vacuum state for switchable ultrawide-angle and broadband deflection

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