Highly sensitive refractive index sensor based on Bloch surface waves with lithium niobate film

Ge, Daohan; Zhou, Yujie; Shi, Jiakang; Zhang, Liqiang; Zhu, Shining

doi:10.1007/s00339-021-05212-2

Cited by 15 publications

(10 citation statements)

References 35 publications

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“…Since the ability to resolve the minimal shift of the resonant peak in the reflection spectrum improves in direct proportion to the value of the Q parameter, this characteristic has emerged as an essential criterion for evaluating the effectiveness of the sensor. 26 In addition, the restricted modes are evanescent in nature, demonstrating this phenomenon's possible applicability in the photonic sensor. The potential of the proposed structure to detect analytes with refractive indices ranging from 1.0, 1.1, 1.2, 1.3, and 1.4 was tested, and the results are displayed in Fig.…”

Section: Simulation Results and Discussionmentioning

confidence: 94%

“…The type and thickness of 1D PhC defect layer materials are two of the most crucial criteria for sensing in BSW 25 . The angle of excitation at which the BSW is created depends on DBR’s layers or the number of bilayers 26 , 27 . The 1D-PhC structure operates the same way a dielectric mirror would, reflecting most of the light that strikes it.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

“…The sharpness of the resonant peak measures this relationship. Since the ability to resolve the minimal shift of the resonant peak in the reflection spectrum improves in direct proportion to the value of the Q parameter, this characteristic has emerged as an essential criterion for evaluating the effectiveness of the sensor 26 …”

Section: Simulation Results and Discussionmentioning

confidence: 99%

“…25 The angle of excitation at which the BSW is created depends on DBR's layers or the number of bilayers. 26,27 The 1D-PhC structure operates the same way a dielectric mirror would, reflecting most of the light that strikes it. Therefore, there is no BSW mode seen in this particular instance.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

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Assessment of Bloch surface wave-based one-dimensional photonic crystal sensor using ultraviolet range

Sagar

Kumar

2023

J. Nanophoton.

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To generate resonance in the ultraviolet (UV) wavelength region, we have developed a Bragg mirror structure with a SiO 2 top layer. This paper shows the wavelength at which sensitivity occurs by modifying the architecture of the one-dimensional photonic crystal (1D-PhC) structure appropriately. The structural parameters are adjusted to excite a Bloch surface wave with a wavelength of 256 and 281 nm at the top interface, which are the operational wavelengths. The spectrum's distribution of electric fields and mode confinement confirmed the suggested structure with an 8-nm thick defect layer. The proposed design is empathetic at UV wavelength with varying analyte's refractive index value. The investigation shows that the sensitivity is about 107.42 and 101.85 deg/RIU, and the quality factor is 1426.17 and 1708.14 nm at UV wavelengths of 281 and 256 nm, respectively.

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Section: Simulation Results and Discussionmentioning

confidence: 94%

Section: Simulation Results and Discussionmentioning

confidence: 99%

Section: Simulation Results and Discussionmentioning

confidence: 99%

Section: Simulation Results and Discussionmentioning

confidence: 99%

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Assessment of Bloch surface wave-based one-dimensional photonic crystal sensor using ultraviolet range

Sagar

Kumar

2023

J. Nanophoton.

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“…BSW is considered to replace surface plasmon resonance (SPR) [3][4][5][6][7][8] in the sensing field. Similar to SPR, BSW can also be excited by prisms [9], microcavities [10,11], optical fibers [5,12,13], gratings [14,15], etc. Compared with SPR sensors, BSW sensors without metal materials can achieve low or no energy loss, allowing a wider propagation length and sharper sensing resonance peaks with a higher quality factor [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Tunable Bloch surface wave constructed by two-dimensional lithium niobate grating for biosensor

Ge¹,

Wang²,

Shi³

et al. 2023

Phys. Scr.

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In this study, a Bloch surface wave (BSW) biosensor coupled with a two-dimensional lithium niobate grating was designed. The influence of the nonlinear characteristics of lithium niobate on the BSW sensor was theoretically investigated, and the tunability of the BSW was studied using the excitation schemes of ne and no. To confine the energy on the surface of the solution in contact with the sensor, we introduce a distributed Bragg reflector mirror (DBR) consisting of four pairs of 76% and 42% porosity porous silicon films. A layer of lithium niobate grating is deposited on top of DBR to excite Bloch surface waves (BSW)and introduce the concept of azimuth detection in the study of the tunable properties of lithium niobate. Then, the azimuth angle of the resonance peaks excited along the ne and no directions of lithium niobate varied by approximately 5°.

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Constrained optimization of transition metal dichalcogenide-based Bloch surface wave sensor using improved genetic algorithm

2022

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Highly sensitive refractive index sensor based on Bloch surface waves with lithium niobate film

Cited by 15 publications

References 35 publications

Assessment of Bloch surface wave-based one-dimensional photonic crystal sensor using ultraviolet range

Assessment of Bloch surface wave-based one-dimensional photonic crystal sensor using ultraviolet range

Tunable Bloch surface wave constructed by two-dimensional lithium niobate grating for biosensor

Constrained optimization of transition metal dichalcogenide-based Bloch surface wave sensor using improved genetic algorithm

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