Simulation of electro optic modulators based on plasmonic directional couplers

Ghomashi, Mohammadamin; Tibaldi, Alberto; Bertazzi, Francesco; Vallone, Marco; Goano, Michele; Ghione, Giovanni

doi:10.1109/nusod49422.2020.9217744

Cited by 2 publications

(3 citation statements)

References 4 publications

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“…The figure reports two curves, which have been obtained with two different choices of the I/O terminations in the 3D-FDTD simulation. The blue curve is obtained simulating the entire device, including a silicon input waveguide (n = 3.6), with xand y-widths W x = 450 nm, W y = 200 nm, and photonic-plasmonic converters (PPCs) consisting in triangular tapers extended 200 nm in the z direction and designed in such a way as to keep a constant distance of 50 nm from the corresponding oblique taper in the dielectric waveguide [16]. The red curve is obtained launching directly the plasmonic mode into the input of the plasmonic I/O slot and measuring the power at its output, i.e., neglecting the PPC section and the corresponding losses.…”

Section: Plasmonic Coupled-slot Modulator Geometry and Operation Principlementioning

confidence: 99%

“…Several plasmonic-based modulating devices exploiting different EO materials have been proposed in the recent past, such as the POH MZ modulator [4], [5], [9] based on POH plasmonic phase shifters [10], the POH plasmonic ring modulator [11], the plasmonic directional coupler (PDC) modulator based on ITO [12], [13] or on EO organic materials [14]- [16].…”

Section: Introductionmentioning

confidence: 99%

“…II, where its operating principle and main features are discussed, also in comparison with MZ modulators. Using as a case study a device whose cross section is inspired to coupled-slot POH MZM in [4], similar to the one proposed in [16], where a preliminary feasibility study is provided on the basis of 3D-FDTD simulations, Sec. III describes the efficient modeling approach exploited for a systematic design and optimization of the PDC modulator.…”

Section: Introductionmentioning

confidence: 99%

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Analysis and Design of Plasmonic-Organic Hybrid Electro-Optic Modulators Based on Directional Couplers

et al. 2022

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We present a detailed simulation study on plasmonic-organic hybrid electro-optic modulators based on coupled symmetric or asymmetric plasmonic slots. An electrooptic polymer is exploited as an active material, and the device is compatible with a silicon photonics platform. The proposed device operates at 1550 nm wavelength, typical of data center or long-haul telecommunication systems. The device performance in terms of area, plasmonic losses, optical bandwidth, intrinsic modulation bandwidth and energy dissipation are comparable to already proposed Mach-Zehnder solutions, but with potentially better extinction ratio, coupling losses due to photonic-plasmonic transitions, and flexibility in exploiting, without any performance penalty, asymmetric slots to shift the ON and OFF states bias. Finally, the bias dependence of the modulation chirp is investigated, comparing through and cross-coupling configurations.

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Section: Plasmonic Coupled-slot Modulator Geometry and Operation Principlementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis and Design of Plasmonic-Organic Hybrid Electro-Optic Modulators Based on Directional Couplers

et al. 2022

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Mid-infrared electro-optic modulator based on a graphene-embedded plasmonic rib waveguide with ultrahigh electro-optic wavelength tuning

Hou

Gao

et al. 2021

Appl. Opt.

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A graphene-embedded plasmonic rib waveguide (GEPRW) is designed for the mid-infrared electro-optic modulator. The mode characteristics and electro-optic (EO) modulation performances are simulated and optimized by using the finite element method. The results show that propagation length of 10 3 m m and figure of merit of 10 6 are obtained by adjusting the bias voltage applied to the GEPRW. The EO wavelength tunings are − 66.69 and − 78.87 n m / V for peak L and peak R in the loss spectra when w = 3 µ m and h 1 = 2 µ m . For a 100 µm long GEPRW, the modulation depths of ∼ 96.4 , ∼ 97.1 , ∼ 93.7 , and ∼ 94.9 % , and FWHMs of ∼ 30 , ∼ 74 , ∼ 34 , and ∼ 59 n m can be achieved when λ = 1.55 , 1.87, 1.89, and 2.23 µm. The EO modulator based on the GEPRW has a wide wavelength tuning range from 1.05 to 2.23 µm. It has high modulation depth, low insertion loss, and broad bandwidth, which can be used as EO tunable devices such as optical interconnects and optical switches.

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Simulation of electro optic modulators based on plasmonic directional couplers

Cited by 2 publications

References 4 publications

Analysis and Design of Plasmonic-Organic Hybrid Electro-Optic Modulators Based on Directional Couplers

Analysis and Design of Plasmonic-Organic Hybrid Electro-Optic Modulators Based on Directional Couplers

Mid-infrared electro-optic modulator based on a graphene-embedded plasmonic rib waveguide with ultrahigh electro-optic wavelength tuning

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