Comparison of the Optical Planar Waveguide Sensors’ Characteristics Based on Guided-Mode Resonance

Bellucci, Stefano; Fitio, Volodymyr; Yaremchuk, Iryna; Vernyhor, O.; Bendziak, A.; Bobitski, Yaroslav

doi:10.3390/sym12081315

Cited by 7 publications

(15 citation statements)

References 49 publications

(101 reference statements)

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“…Numerical calculations show that S λ δλ 0.5 ∼ S θ δθ 0.5 > S λG δλ 0.5G ∼ S θG δθ 0.5G . It is consistent with the results of [10,13].…”

Section: Discussionsupporting

confidence: 92%

“…It is much less than the average refractive index of the grating medium n 20 . The structure under study is essentially a planar waveguide and the following condition must be satisfied under resonance [10,13,17]:…”

Section: Numerical Analysis Of the Gaussian Beam Diffraction By The Infinite Gratingmentioning

confidence: 99%

“…The resonant wavelength at the plane wave incidence, at which the reflection coefficient from the structure is equal to unity, was 1.064 μm. This wavelength was selected in terms of increasing sensitivity with increasing wavelength [ 13 ]. The angle of incidence of the beam on the grating in air

is 20 angular degrees under resonance.…”

Section: Numerical Analysis Of the Gaussian Beam Diffraction By The Infinite Gratingmentioning

confidence: 99%

“…The description and analyses of various refractive index sensors as well as providing extensive references on the corresponding sensors are presented in the reviews references [ 9 , 11 ]. In work [ 13 ], sensitivity of the dielectric grating on the dielectric substrate, the metal grating on the metal substrate, and the prismatic structure have been analyzed for various types of sensors. Moreover, its relationship with the waveguide properties of periodic structures has been researched.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, its relationship with the waveguide properties of periodic structures has been researched. It has been shown that the ratio of the sensitivity to the width of the resonant response at full width at half maximum (FWHM) is in the range 508–522 at the resonance wavelength of 1.064 μm for surface plasmon-polariton sensors [ 13 ]. The spectral sensitivity was 76 nm in case of the dielectric grating on the dielectric substrate and the angular one was 142 mrad [ 10 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

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Diffraction of a Gaussian Beam with Limited cross Section by a Volume Phase Grating under Waveguide Mode Resonance

et al. 2021

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In this work, the diffraction of a Gaussian beam on a volume phase grating was researched theoretically and numerically. The proposed method is based on rigorous coupled-wave analysis (RCWA) and Fourier transform. The Gaussian beam is decomposed into plane waves using the Fourier transform. The number of plane waves is determined using the sampling theorem. The complex reflected and transmitted amplitudes are calculated for each RCWA plane wave. The distribution of the fields along the grating for the reflected and transmitted waves is determined using inverse Fourier transform. The powers of the reflected and transmitted waves are determined based on these distributions. Our method shows that the energy conservation law is satisfied for the phase grating. That is, the power of the incident Gaussian beam is equal to the sum of the powers of the reflected and transmitted beams. It is demonstration of our approach correctness. The numerous studies have shown that the spatial shapes of the reflected and transmitted beams differ from the Gaussian beam under resonance. In additional, the waveguide mode appears also in the grating. The spatial forms of the reflected and transmitted beams are Gaussian in the absence of resonance. It was found that the width of the resonance curves is wider for the Gaussian beam than for the plane wave. However, the spectral and angular sensitivities are the same as for the plane wave. The resonant wavelengths are slightly different for the plane wave and the Gaussian beam. Numerical calculations for four refractive index modulation coefficients of the grating medium were carried out by the proposed method. The widths of the resonance curves decrease with the increasing in the refractive index modulation. Moreover, the reflection coefficient also increases.

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“…Numerical calculations show that S λ δλ 0.5 ∼ S θ δθ 0.5 > S λG δλ 0.5G ∼ S θG δθ 0.5G . It is consistent with the results of [10,13].…”

Section: Discussionsupporting

confidence: 92%

Section: Numerical Analysis Of the Gaussian Beam Diffraction By The Infinite Gratingmentioning

confidence: 99%

is 20 angular degrees under resonance.…”

Section: Numerical Analysis Of the Gaussian Beam Diffraction By The Infinite Gratingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Diffraction of a Gaussian Beam with Limited cross Section by a Volume Phase Grating under Waveguide Mode Resonance

et al. 2021

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Simultaneous and Ultrasensitive Measurement of Refractive Index and Temperature Based on SPR of Hollow-Core Anti-resonant Fibers

Liu,

Leng,

et al. 2024

Plasmonics

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High throughput composite sensor based on sub-wavelength dielectric grating/MDM waveguide/periodic photonic crystal

Chen¹,

Zhou²,

Ding³

et al. 2022

Phys. Scr.

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Based on surface plasmon resonance (SPR) and coupled mode theory (CMT), the formation mechanism of double Fano resonances is studied in a hybrid sensing structure composed of subwavelength dielectric grating/metal-dielectric-metal (MDM) waveguide/periodic photonic crystal. Studies show that the dynamically adjustable double discrete states generated in the subwavelength dielectric grating and MDM waveguide are coupled with the continuous state formed in the periodic photonic crystal respectively to achieve double Fano resonances. And the double Fano resonances can be dynamically modulated under the angular modulation by the structure parameters. Surprisingly, the figure of merit (FOM) value of 4.00 x 104 is also achieved, which demonstrates the proposed structure has potential applications in sensing. In addition, the low and high refractive index sensing regions are set up. Simultaneous detection of refractive index ranges 1.00-1.29 and 3.79-4.14 is achieved. Thus, the proposed structure provides an effective reference for studying the dynamic modulation of double Fano resonances and high throughput sensors.

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Comparison of the Optical Planar Waveguide Sensors’ Characteristics Based on Guided-Mode Resonance

Cited by 7 publications

References 49 publications

Diffraction of a Gaussian Beam with Limited cross Section by a Volume Phase Grating under Waveguide Mode Resonance

Diffraction of a Gaussian Beam with Limited cross Section by a Volume Phase Grating under Waveguide Mode Resonance

Simultaneous and Ultrasensitive Measurement of Refractive Index and Temperature Based on SPR of Hollow-Core Anti-resonant Fibers

High throughput composite sensor based on sub-wavelength dielectric grating/MDM waveguide/periodic photonic crystal

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