Excitation enhancement of surface plasmon polaritons from an annular plasmonic coupler based on internal corrugations and a central nanowire

Mudhafer, A.; Khaleel, Zahraa S.; Malallah, Ra’ed

doi:10.1007/s10825-021-01727-2

Cited by 5 publications

(4 citation statements)

References 44 publications

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“…Figure (11) shows the CE spectra for each case of excitation polarization using the single-layer approach and the double-layer approach.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

“…Although this outstanding approach solved the grating's polarization dependency, however, it results in a nonuniform gratings (apodized) periodicity with thin grooves or summits in the Si waveguide. Consequently, the apodization of the GCs adds to the complexity of the fabrication when it is desired to use this approach in other different wavelengths since smaller operating wavelengths result in thinner grating grooves or summits [11].…”

Section: Introductionmentioning

confidence: 99%

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Design and Numerical Verification of Four States Polarization-independent Grating Coupler Using a Double-Layer Approach for a Single-photon Source based on HPW

Khaleel¹,

Tawfeeq

2021

Preprint

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In this paper, a double-layer approach is proposed to design a compact four states polarization-independent grating coupler (GC). The proposed polarization-independent GC is designed to couple a 700 nm polarized light propagated in a 150 nm Gallium Phosphide (GaP) waveguide to a polarization-maintaining fiber (PMF). The double-layer approach is based on the deposition of GaP gratings designed to couple the transverse magnetic (TM) light over the GaP gratings designed to couple the transverse electric (TE) light. The two layers are separated by a Hydrogen silsesquioxane (HSQ) with an optimum thickness of 20 nm. The proposed method resulted in relatively high coupling efficiencies (CEs) of 39.2%, 31.1%, and 23.3% for the TE, TM, and 45º/-45º linearly polarized light, respectively. The polarization-dependent loss (PDL) is 1 dB, 1.26 dB, and 2.26 dB corresponds to TE-TM, TM-45º/-45º, and TE-45º/-45º, respectively. The performance of the double-layer approach is numerically verified by the two-dimensional (2D) finite element algorithm (FEM) using COMSOL software. The proposed method suggests a novel and simple approach to design a compact four states polarization-independent GC that could be used in integrated (on-chip) photonic communication circuits.

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“…Figure (11) shows the CE spectra for each case of excitation polarization using the single-layer approach and the double-layer approach.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and Numerical Verification of Four States Polarization-independent Grating Coupler Using a Double-Layer Approach for a Single-photon Source based on HPW

Khaleel¹,

Tawfeeq

2021

Preprint

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“…In recent years, researchers at home and abroad have designed a variety of optical micro-nano devices based on surface plasma and micro-nano structures such as waveguides and filters [5], modulators [6], couplers [7,8] and sensors [9]. Compared with symmetrical Lorentz linear [10], Asymmetric Fano resonance [11] has advantages such as high sensitivity [12] and high quality factor [13].…”

Section: Introductionmentioning

confidence: 99%

“…−1 . The corresponding solution refractive index is according to the formula (5)-(7). It can be seen that n z increases from 1.33095 to 1.39935 with a step size of 0.0171, n p increases from 1.32984 to 1.36664 with a step size of 0.0092, and n NaCl increases from 1.33309 to 1.40709 with a step size of 0.0185.…”

mentioning

confidence: 99%

Double Fano sensing mechanism of waveguide coupled surface plasma

et al. 2023

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Based on the optical properties of waveguide-coupled surface plasmon resonance, a sensor of surface plasmon coupled waveguide resonance with double discrete states generated by the upper and lower waveguide structures combined with prisms and Au films, respectively, is proposed. In this paper, the sensing structure is studied numerically and analytically, and the transmission characteristics of surface equipartition excitations are analyzed and elaborated in-depth in combination with the reflection angle spectrum, as well as the generation and evolution mechanism of dual Fano resonance at different incidence angles at fixed wavelengths. The structural model of Fano resonance sensing based on angle modulation is established, and the sensing characteristics are analyzed to produce electromagnetic field enhancement at low-angle Fano. The mathematical model between structural parameters and spectral performance is established using back propagation (BP) neural network, and the particle swarm optimization (PSO) algorithm is used to find the input structural parameters corresponding to the optimal performance, The results show that the quality factor of resonance (FOM) and sensitivity is significantly improved; When it is used in the field of biosensing, the response curves of Fano with different angles of high and low to concentration are quite different, thus realizing high precision detection of different concentrations of solutions and reflecting excellent sensing performance.

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Machine learning-based classification for predicting the power flow of surface plasmon polaritons in nanoplasmonic coupler

Khaleel

Mudhafer

2023

Opt Rev

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Excitation enhancement of surface plasmon polaritons from an annular plasmonic coupler based on internal corrugations and a central nanowire

Cited by 5 publications

References 44 publications

Design and Numerical Verification of Four States Polarization-independent Grating Coupler Using a Double-Layer Approach for a Single-photon Source based on HPW

Design and Numerical Verification of Four States Polarization-independent Grating Coupler Using a Double-Layer Approach for a Single-photon Source based on HPW

Double Fano sensing mechanism of waveguide coupled surface plasma

Machine learning-based classification for predicting the power flow of surface plasmon polaritons in nanoplasmonic coupler

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