High-performance refractive index sensor based on guided-mode resonance in all-dielectric nano-silt array

Lan, Guilian; Zhang, Song; Zhang, Hong; Zhu, Yuhang; Qing, Longyu; Li, Daimin; Nong, Jinpeng; Wang, Wei; Chen, Li; Wei, Wei

doi:10.1016/j.physleta.2019.01.057

Cited by 29 publications

(20 citation statements)

References 27 publications

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“…By combining the analytical model and numerical simulations, in [ 38 , 50 ], the optical response of the sensing device based on grating-waveguide was modeled. In the first case, a simple 1D-all-dielectric nano-slit array on a substrate was considered as a sensitive element for TM polarized light wave.…”

Section: Discussionmentioning

confidence: 99%

“…In order to increase the accuracy of the RI definition, geometry and parameters of the structures are varied and different methods of signal processing are used. As a result, a design of all-dielectric RI sensor based on a simple 1D-grating was proposed, which ensures the bandwidth (FWHM) decrease down to 0.02 nm [ 38 ]. The sensor properties of the corrugated waveguide structures will be considered in more detail when discussing the experimental results.…”

Section: Introductionmentioning

confidence: 99%

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Resonant and Sensing Performance of Volume Waveguide Structures Based on Polymer Nanomaterials

et al. 2020

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Organic–inorganic photocurable nanocomposite materials are a topic of intensive research nowadays. The wide variety of materials and flexibility of their characteristics provide more freedom to design optical elements for light and neutron optics and holographic sensors. We propose a new strategy of nanocomposite application for fabricating resonant waveguide structures (RWS), whose working principle is based on optical waveguide resonance. Due to their resonant properties, RWS can be used as active tunable filters, refractive index (RI) sensors, near-field enhancers for spectroscopy, non-linear optics, etc. Our original photocurable organic–inorganic nanocomposite was used as a material for RWS. Unlike known waveguide structures with corrugated surfaces, we investigated the waveguide gratings with the volume modulation of the RI fabricated by a holographic method that enables large-size structures with high homogeneity. In order to produce thin photosensitive waveguide layers for their subsequent holographic structuring, a special compression method was developed. The resonant and sensing properties of new resonant structures were experimentally examined. The volume waveguide gratings demonstrate narrow resonant peaks with a bandwidth less than 0.012 nm. The Q-factor exceeds 50,000. The sensor based on waveguide volume grating provides detection of a minimal RI change of 1 × 10−4 RIU. Here we also present the new theoretical model that is used for analysis and design of developed RWS. Based on the proposed model, fairly simple analytical relationships between the parameters characterizing the sensor were obtained.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Resonant and Sensing Performance of Volume Waveguide Structures Based on Polymer Nanomaterials

et al. 2020

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“…To quantify the performance of such a sensing device, the sensitivity and figure of merit (FOM) are introduced via S = dλ/dn and FOM = S/Δλ, respectively. 17 The sensitivity describes the peak wavelength shift per RI unit with the unit of nm/RIU, thus a higher sensitivity allows for detecting a smaller RI change. The optimal sensitivity is dependent on the spectral bandwidth; therefore, FOM represents the maximum sensing capability or potential.…”

Section: Polarization-independent Ri Sensormentioning

confidence: 99%

Polarization‐independent liquid crystal‐based refractive index sensor

Yang

Zhan

2021

J Soc Info Display

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A polarization-independent refractive index (RI) sensor with a sensitivity of 50 nm/RIU is demonstrated. The proposed RI sensor simply consists of a liquid crystal (LC) polymeric polarization grating film and one glass substrate. The wavelength shift over the RI of the surrounding medium is investigated through anisotropic rigorous coupled-wave analysis. Such an LC-based polarization-independent RI sensor not only enables the usage of an unpolarized light source but also manifests a high sensitivity, offering great potential for the integration with display systems.

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“…The nature of the GMR leaky modes makes them very easy to interface: The GMR grating is illuminated with a collimated beam in free space and the reflected/transmitted GMR grating signal is captured with a detector. Previous studies have demonstrated the potential of GMR gratings for use as optical modulators, filters [17], lithography [18] and biosensors [19][20][21]. Data on the use of GMR grating sensors for mechanical measurements, on the contrary, is limited.…”

Section: Introductionmentioning

confidence: 99%

Imprinted Polymer-Based Guided Mode Resonance Grating Strain Sensors

Mattelin

Missinne

Coensel

et al. 2020

Sensors

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Optical sensors based on guided mode resonance (GMR) realized in polymers are promising candidates for sensitive and cost effective strain sensors. The benefit of GMR grating sensors is the non-contact, easy optical read-out with large working distance, avoiding costly alignment and packaging procedures. The GMR gratings with resonance around 850–900 nm are fabricated using electron beam lithography and replicated using a soft stamp based imprinting technique on 175 μ m-thick foils to make them suitable for optical strain sensing. For the strain measurements, foils are realized with both GMR gratings and waveguides with Bragg gratings. The latter are used as reference sensors and allow extracting the absolute strain sensitivity of the GMR sensor foils. Following this method, it is shown that GMR gratings have an absolute strain sensitivity of 1.02 ± 0.05 pm / μ ε at 870 nm.

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High-performance refractive index sensor based on guided-mode resonance in all-dielectric nano-silt array

Cited by 29 publications

References 27 publications

Resonant and Sensing Performance of Volume Waveguide Structures Based on Polymer Nanomaterials

Resonant and Sensing Performance of Volume Waveguide Structures Based on Polymer Nanomaterials

Polarization‐independent liquid crystal‐based refractive index sensor

Imprinted Polymer-Based Guided Mode Resonance Grating Strain Sensors

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