VO2 / ITO Hybrid Plasmonic High Performance Electro-Optical Modulator

Amer, Aya; Badr, M. M.; Swillam, Mohamed A.

doi:10.1364/fio.2018.jw3a.96

Cited by 5 publications

(3 citation statements)

References 2 publications

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“…In [16], W Cao reported a high speed silicon modulators at 2 µm operating wavelength. In [67], a hybrid plasmonic electro-optical modulator incorporating VO 2 and ITO is proposed. The device exhibits 6.36 dB ER and 1.13 dB IL at 1.55 µm.…”

Section: B Opto-thermal Analysis Of the Modulator: Phase Transition O...mentioning

confidence: 99%

TiN-GST-TiN all-optical reflection modulator for the 2 µm wave band reaching 85% efficiency

Bhuiyan

Mitu²,

Choudhury³

2022

Appl. Opt.

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In this study, we present an all-optical reflection modulator for the 2 µm communication band exploiting a nanogear-array metasurface and phase-change-material G e 2 S b 2 T e 5 (GST). The reflectance of the structure can be manipulated by altering the phase of GST by employing optical stimuli, and this paper provides details on the optical and opto-thermal modeling techniques of GST. A numerical investigation reveals that the metastructure exhibits a conspicuous changeover from ∼ 99 % absorption to very poor interaction with the operating light depending on the switching states of the GST, ending up with 85% modulation depth and only 0.58 dB insertion loss. Due to noticeable differences in optical responses, we can demonstrate a high extinction ratio of 28 dB and a commendable figure of merit of 49, so far the best modulation performance in this wavelength window, to our knowledge. In addition, real-time tracking of reflectance during phase transition manifests high-speed switching expending low energy per cycle, of the order of sub-nJ. Hence, given its overall performance, the device will be a paradigm for optical modulators for upcoming 2 µm communication technology.

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Section: B Opto-thermal Analysis Of the Modulator: Phase Transition O...mentioning

confidence: 99%

TiN-GST-TiN all-optical reflection modulator for the 2 µm wave band reaching 85% efficiency

Bhuiyan

Mitu²,

Choudhury³

2022

Appl. Opt.

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“…A thin layer of an active material is added between the MOS' waveguide layers, whose optical properties changes from dielectric to a quasi-metal according to a biasing voltage which is applied to the MOS waveguide as illustrated in figure (4). The selected active material in this work is indium tin oxide (ITO) because of its unity-strong index tenability, its modulation mechanism is to change the free carrier concentration of the material overlapping with the propagating optical mode which leads to a shift of the plasma frequency of the dispersion relation [17][18]. This modifies both the real and imaginary parts of the refractive index of the material, and henceforth alters the index and loss of the optical propagating mode.…”

Section: Modeling Of Hybrid Plasmonic Bidirectional Couplermentioning

confidence: 99%

“…Indium tin oxide (ITO) was chosen for this task due to its unity-strong index tenability. Its modulation mechanism depends on alternating the free carrier concentration that forces the plasma frequency of the dispersion relation to be shifted [17][18].…”

Section: Introductionmentioning

confidence: 99%

Highly Transmission Efficiency of Optoelectronic Devices Using Active Hybrid Plasmonic Coupler

elbialy

Yousif

Samra

2021

Preprint

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This paper discusses modeling and optimizing the performance of hybrid plasmonic bidirectional coupler which is used as a basic building block in modeling highly transmission efficiency of optoelectronic devices such as filter, wavelength division multiplexer, logic gates and switching matrix with a help of an active material (indium tin oxide) that has an electrically-adjustable permittivity. All the proposed devices satisfied high transmission efficiencies at the desired output ports over a suitable wavelength range. The realized structures are characterized and simulated by 3D finite-difference time-domain (FDTD). The components would be useful in the optical interconnect networks, photonic integrated circuits and signal processing system.

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Modeling and Performance Enhancement of Active Hybrid Plasmonic Electro-optic Routing Switch

2020

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VO2 / ITO Hybrid Plasmonic High Performance Electro-Optical Modulator

Cited by 5 publications

References 2 publications

TiN-GST-TiN all-optical reflection modulator for the 2 µm wave band reaching 85% efficiency

TiN-GST-TiN all-optical reflection modulator for the 2 µm wave band reaching 85% efficiency

Highly Transmission Efficiency of Optoelectronic Devices Using Active Hybrid Plasmonic Coupler

Modeling and Performance Enhancement of Active Hybrid Plasmonic Electro-optic Routing Switch

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