Guided-Mode Resonance-Based Relative Humidity Sensing Employing a Planar Waveguide Structure

Urbancová, Petra; Chylek, Jakub; Hlubina, Petr; Pudiš, Dušan

doi:10.3390/s20236788

Cited by 9 publications

(6 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, sensors based on the phase detection of waves supported by a 1DPhC are feasible [ 22 , 23 , 24 , 25 , 26 , 27 ]. In addition, they represent an alternative to relative humidity sensors based on resonances of surface plasmons [ 16 ], BSWs [ 16 ], whispering gallery modes [ 28 ], guided modes [ 4 , 7 , 29 ], photonic crystal modes [ 30 ], and lossy modes [ 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Efficient Optical Sensing Based on Phase Shift of Waves Supported by a One-Dimensional Photonic Crystal

Kaňok

Hlubina

Gembalová

et al. 2021

Sensors

Self Cite

View full text Add to dashboard Cite

Interferometric methods of optical sensing based on the phase shift of the Bloch surface waves (BSWs) and guided waves (GWs) supported by a one-dimensional photonic crystal are presented. The photonic crystal, composed of six SiO2/TiO2 bilayers with a termination layer of TiO2, is employed in the Kretschmann configuration. Under resonance condition, an abrupt phase change is revealed, and the corresponding phase shift is measured by interferometric techniques applied in both the spectral and spatial domains. The spectral interferometric technique employing a birefringent quartz crystal is used to obtain interference of projections of p- and s-polarized light waves reflected from the photonic crystal. The phase shifts are retrieved by processing the spectral interferograms recorded for various values of relative humidity (RH) of air, giving the sensitivity to the RH as high as 0.029 rad/%RH and 0.012 rad/%RH for the BSW and GW, respectively. The spatial interferometric technique employs a Wollaston prism and an analyzer to generate an interference pattern, which is processed to retrieve the phase difference, and results are in good agreement with those obtained by sensing the phase shift in the spectral domain. In addition, from the derivative of the spectral phase shifts, the peak positions are obtained, and their changes with the RH give the sensitivities of 0.094 nm/%RH and 0.061 nm/%RH for the BSW and GW, respectively. These experimental results demonstrate an efficient optical sensing with a lot of applications in various research areas.

show abstract

Section: Introductionmentioning

confidence: 99%

Efficient Optical Sensing Based on Phase Shift of Waves Supported by a One-Dimensional Photonic Crystal

Kaňok

Hlubina

Gembalová

et al. 2021

Sensors

Self Cite

View full text Add to dashboard Cite

show abstract

“…Therefore, to assess the goodness of a biosensor, one must consider not only bulk sensitivity but also the Figure of Merit (FOM) for biosensors, which combines the sharpness of the resonance through its FWHM and the biosensor's bulk sensitivity, expressed as FOM = Sλ /FWHM. Typical FOM values for standard SPR-based sensors range from 75 to 150 RIU -1 [37,38], which are slightly lower than those of standard GMR-based sensors (220-450 RIU -1 ) [39,40]. Improvements in FWHM values (less than nm) in PhC cavities result in larger FOM values (525-1,550 RIU -1 ) [40][41].…”

Section: Biosensor Performancementioning

confidence: 97%

High-Resolved Near-Field Sensing by Means of Dielectric Grating With a Box-Like Resonance Shape

Toma,

Brunetti,

Colapietro

et al. 2024

IEEE Sensors J.

View full text Add to dashboard Cite

In the last ten years, advances in diagnosis and treatment have played a significant role in counteracting the growth of dangerous diseases. Recently, several studies have demonstrated that monitoring proteins in the human body helps predictive monitoring of human health conditions and disease progress. In this context, bio-recognition techniques with high resolution are crucial. Evanescent-field biosensors have been widely investigated and successfully developed thanks to their ultra-high sensitivity. However, their resolution is mitigated by the nature of the Lorentzian spectral lineshape that shows inevitable significant spectral overlap among similar concentration-related resonances. To overcome this problem, a novel ultra-compact photonic biosensor with a tailored resonance shape is proposed. The device consists of 1D Photonic Crystal with engineered defects to achieve resonance with a box-like shape, a very large roll-off (= -10.50 dB/oct.), within a small footprint (≈ 1 • 10 -2 µm 2 ), enabling single wavelength interrogation. The strong biosensoranalyte interaction is associated with a larger transmission change with respect to biosensors with Lorentzian shape (> 4 dB vs. > 0.5 dB for proteins Immunoglobulin-G (IgG) concentration from 1 pg/mL to 500 pg/mL), drastically decreasing the read errors.

show abstract

“…[ 23 ] GMR is a diffraction phenomenon with intense coupling resonance in grating diffraction due to the matching of waveguide mode and grating parameters. [ 24,25 ] The interaction can cause very sharp resonance peaks in the reflection or transmission spectrum. The phase‐matching condition was fulfilled by the following formula [ 26 ]

β = \frac{ω_{0}}{normalc} sin θ + m \frac{2 π}{p}, false(m = 1, 2, 3 \dots false)

where the wave vector k = ω 0 / c of free space vacuum, θ is the incident angle, and m is the diffraction order of the grating.…”

Section: Structure and Theorymentioning

confidence: 99%

“…[23] GMR is a diffraction phenomenon with intense coupling resonance in grating diffraction due to the matching of waveguide mode and grating parameters. [24,25] The interaction can cause very sharp resonance peaks in the reflection or transmission spectrum. The phase-matching condition was fulfilled by the following formula [26]…”

Section: Structure and Theorymentioning

confidence: 99%

High‐Sensitivity Thin‐Film Grating Absorbers for Sensing Applications

Sun

Shen

Zheng

et al. 2023

Physica Status Solidi (b)

View full text Add to dashboard Cite

Herein, based on the finite‐element calculation method, a high‐sensitivity infrared absorption sensor is designed with ZnSe as the substrate, Mo as the waveguide layer and periodic grating, and Ge as the thin film. The absorption performance of the structure is not sensitive to the polarization of the incident light when the transverse‐magnetic light wave is perpendicular to the structure. The thickness of the Ge thin film and the width of the grating column are the main factors for determining its absorption and sensing performance. The optimized structure is sensitive to the refractive index on the grating. Herein, a correspondence between the refractive index change and the position of the peak of the absorbance spectrum is established. When this structure is used as a refractive index sensor, the sensitivity can reach 2300 nm RIU−1 with a high figure of merit of 37.09. In addition, temperature sensing in ethanol shows that the waveguide can quantify the solution temperature by resonance. It is demonstrated in the results that the grating absorber has great potential applications in biomedical sensing.

show abstract

Guided-Mode Resonance-Based Relative Humidity Sensing Employing a Planar Waveguide Structure

Cited by 9 publications

References 30 publications

Efficient Optical Sensing Based on Phase Shift of Waves Supported by a One-Dimensional Photonic Crystal

Efficient Optical Sensing Based on Phase Shift of Waves Supported by a One-Dimensional Photonic Crystal

High-Resolved Near-Field Sensing by Means of Dielectric Grating With a Box-Like Resonance Shape

High‐Sensitivity Thin‐Film Grating Absorbers for Sensing Applications

Contact Info

Product

Resources

About