Low power hybrid plasmonic microring-on-disks electro-optical modulators

Fouad, Nourhan; Zaki, Aya; Zografopoulos, Dimitrios C.; Beccherelli, Romeo; Swillam, Mohamed A.

doi:10.1117/1.jnp.11.016014

Cited by 14 publications

(4 citation statements)

References 33 publications

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“…Cascade ring resonators are more prominent than single ring resonator due to their ability to vary the frequency spectrum [3], [6], [7], [18], [19], [25]. Because of the coupling regions between the rings in cascade ring resonators, the field is transferred through the rings and the optical path-length varies.…”

Section: Analytical Resultsmentioning

confidence: 99%

Improving the Triple Coupled Ring-Resonator Performance as an Optical Filter

Bazouband

Rahimpour

2021

IJOP

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In this paper, a three ringresonator serially coupled is considered as an optical filter. We are going to improve the performance of the designed optical filter by increasing the quality factor and finesse of filtered wavelengths. The first and last rings are coupled to the bus waveguides that carry the input and output fields. The effect of coupling parameters and ring radii on the filtering of operating wavelengths which are between 1545-1550 nm with narrow Free Spectral Range (FSR) less than 0.5 nm is investigated. Using the transfer matrix method, all the rotating and output fields are obtained. FSR, Full Width at Half Maximum (FWHM) and Finesse (F) are evaluated by the wavelength response plots of the output ports obtained in Wolfram Mathematica. The behavior of structure is analyzed by a new approach in order to filter the resonant wavelengths of the transmission channel with higher finesse.

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Section: Analytical Resultsmentioning

confidence: 99%

Improving the Triple Coupled Ring-Resonator Performance as an Optical Filter

Bazouband

Rahimpour

2021

IJOP

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“…Optical modulators are presumed to be compact, highly efficient, fast, CMOS compatible, operating with low power, and introducing low losses. Ring resonator modulators [7][8][9][10] offer more compactness in size, higher operation speeds and better overall modulation parameters compared to other non-resonant modulators. However, they suffer from temperature fluctuation and low resistivity against fabrication tolerances [11].…”

Section: Introductionmentioning

confidence: 99%

Silicon ring resonator electro-optical modulator utilizing epsilon-near-zero characteristics of indium tin oxide

2019

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One crucial component in optical communication systems is the optical modulator. It links between the electric and optical domains as it transforms the electric signal into an optical stream. Electro-optical modulation is a very popular scheme. Recently, indium tin oxide (ITO) has been intensively used in optical modulators due to its epsilon-near-zero characteristics. A silicon electro-optic ring resonator modulator is proposed in terms of the outspread application of ITO. An extinction ratio of about 14 dB as well as an insertion loss of 0.075 dB are achieved at a standard telecommunication wavelength of 1.55 microns. The design has low losses, high efficiency, and compact size.

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“…It acts as a connecting bridge between the electric and photonic platforms as it converts the electrical signals into optical data stream. A very popular modulation scheme utilizes electrooptic (EO) materials [5][6][7], where applying an electric field results in changing the refractive index. Weak EO effects in silicon [8][9][10] hinder designing a compact pure silicon modulator.…”

Section: Introductionmentioning

confidence: 99%

“…Towards miniature photonic devices, a huge research has been recently directed towards surface plasmon-polariton (SPP) modes. This class of modes, which propagate along a metal-dielectric interface, is the basis of plasmonic devices [5,7,11,12]. It allows confining the light in nanoscale dimensions overcoming the so-called 'diffraction limit' [12].…”

Section: Introductionmentioning

confidence: 99%

Ultra-fast silicon electro-optic modulator based on ITO-integrated directional coupler

2019

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An optical modulator is a very essential component in optoelectronic communication system as it generates an optical data stream out of an applied electric signal. Designing devices with subwavelength dimensions turned out to be a challenge constrained by the ‘diffraction limit’. Plasmonic-based devices had overcome this issue, reaching miniature footprint but introducing high propagation losses. Alternative materials such as conducting transparent oxides (TCOs) act as an optical dielectric material with an excess of free carriers. By adjusting the gating potential on such materials, an epsilon-near-zero state can be reached and the material exhibits a metal-like behavior, in terms of the optical losses. A very popular TCO material is indium tin oxide (ITO). In this work, ITO is utilized in electro-optic modulator design based on a directional coupler device with a slot waveguide platform. The design introduces an ITO/HfO2 combination in the coupler section waveguide. An extinction ratio more than 9 dB and an insertion loss less than 0.9 dB are achieved at a telecommunication standard wavelength of 1.55 μm. Additionally, an average energy per bit (E) of 4.355 fJ/bit as well as an operating bandwidth up to 1 THz, under optimal conditions, are attained.

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Low power hybrid plasmonic microring-on-disks electro-optical modulators

Cited by 14 publications

References 33 publications

Improving the Triple Coupled Ring-Resonator Performance as an Optical Filter

Improving the Triple Coupled Ring-Resonator Performance as an Optical Filter

Silicon ring resonator electro-optical modulator utilizing epsilon-near-zero characteristics of indium tin oxide

Ultra-fast silicon electro-optic modulator based on ITO-integrated directional coupler

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