A Photonic Crystal Magnetic Field Sensor Using a Shoulder-Coupled Resonant Cavity Infiltrated with Magnetic Fluid

Su, Delong; Pu, Shengli; Mao, Lianmin; Wang, Zhaofang; Qian, Kai

doi:10.3390/s16122157

Cited by 22 publications

(5 citation statements)

References 48 publications

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“…The research reveals that temperature has a limited impact on the mid-frequencies and positions of forbidden bands, but it can alter the number of forbidden bands at specific magnetic field strengths. Later, in 2016, Su et al numerically designed a novel PhC magnetic field sensor, featuring a shoulder-coupled resonant cavity filled with magnetic fluid [116]. By tracking the changes in the resonant wavelength, the sensor achieves magnetic field sensing, with greater sensitivity and improved performance obtained through specific infiltration schemes, resulting in an optimal structure with eight air holes filled with magnetic fluid.…”

Section: Photonic-crystal-based Sensorsmentioning

confidence: 99%

Recent Progress in Photonic Crystal Devices and Their Applications: A Review

Gangwar,

Pathak,

Kumar

2023

Photonics

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The research field of photonic crystals (PhCs) remains active on a global scale. PhCs, which are periodic optical nanostructures with the characteristics of excellent light field confinement and numerous varying degrees of freedom, provide a solid foundation for controlling the movement of light. Periodic variation of the index of refraction in two or three spatial dimensions with a substantial high-to-low ratio generates a number of intriguing phenomena and enables a variety of potential functionalities. Recently, intriguing devices based on PhCs, such as Y-branches, small-diameter bent waveguides, and miniature resonator cavities, have been proposed and extensively utilized. PhC waveguides are considered ideal candidates for a variety of applications, such as in power splitters, logic gates, sensing and communication fields, etc. These exceptional characteristics may facilitate the development of a dense integrated circuit. However, PhC technology is still relatively new and therefore requires additional effort to fully exploit it. This paper reviews the most popular and essential optical components based on PhCs, including power splitters, modulators, polarization maintaining devices, sensors, and lasers, to summarize the most recent developments relating this hot topic. These devices have superior performance and a smaller footprint compared to conventional photonic devices.

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Section: Photonic-crystal-based Sensorsmentioning

confidence: 99%

Recent Progress in Photonic Crystal Devices and Their Applications: A Review

Gangwar,

Pathak,

Kumar

2023

Photonics

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“…However, the sensitivity of the H1 EPhC nanocavity is estimated as S λ =269 nm/RIU for the same infiltrated liquid. Moreover, the structures of our proposed EPhC nanocavities are much simpler and easier to fabricate as compared to the existing PhC sensors formed by slow light engineered miniaturized PhC cavity [10], a silicon ring surrounding a circular PhC [11], defect nanocavities embedded between two PhC waveguides [13], a PhC cavity formed by solid-filling seven air holes [14], hexagonal PhC ring resonator [18], a shouldercoupled resonant cavity introduced in the PhC [37], or Ln slot PhC cavities [20], and silicon PhC α-H 0 -slot microcavity [21].…”

Section: Ri Sensing Of the Optimized Ephc Nanocavitiesmentioning

confidence: 99%

Optical properties of a point-defect nanocavity-based elliptical-hole photonic crystal for mid-infrared liquid sensing

Kassa-Baghdouche¹

2019

Phys. Scr.

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The optical properties of point-defect nanocavities implemented on elliptical-hole planar photonic crystal (EPhC) have been investigated for mid-infrared liquid sensing application. The EPhC nanocavities are composed of silicon planar photonic crystals with a triangular lattice of elliptical air holes, which do not require sophisticated design and high fabrication resolution. The numerical results show that the quality factor and the mode volume of the EPhC nanocavities increase exponentially with an increase in the ellipticity of the air holes. The Q factor is increased by a factor as large as 38 and 26 for H1 and L3 EPhC nanocavities, respectively, with a small mode volume by finely optimizing the EPhC nanocavities. Furthermore, the transmission spectrum of the optimized EPhC nanocavities shows that the variation in the refractive index that is used in the coating of the EPhC nanocavities induces a shift in the resonant wavelength of the nanocavity modes, thus allowing the precision measurement of liquid. In addition, a point-defect EPhC nanocavity with a sensitivity of 285 nm/refractive index unit (RIU) and a detection limit of 10−4 RIU are demonstrated. Therefore, these results suggest that the designed EPhC nanocavities are considered as a promising platform for mid-infrared liquid sensor devices with small detection volumes.

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“…If MF samples are placed in magnetic field direction, and the polarization light propagation paralleled to the magnetic field the Faraday affect may be appeared [11][12][13]. Due to the many interesting characteristics of MF, it has already used extensively at temperature sensor designing [14], photonic crystal magnetic field sensor designing [15], lubricant [16], generator [17], et al The electrical conductivity of MF in vary field is carrying out nowadays. Once the electrical conductivity of MF is clear explored, its using expectant is great expanded…”

Section: Introductionmentioning

confidence: 99%

Electric Current of Ferrofluid Depending on Temperature

Dai

2020

KEM

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Without external magnetic field, the relationship between electric current of ferrofluid (MF) and temperature is discussed. The electric current is increasing linearly with temperature rising in ferrofluid with Fe3O4 particles distributed into water (MF-Fe3O4-W). Through theory and experiment proved, the carrier liquid only in MF-Fe3O4-W could not decide the ability of delivering electric energy of MF-Fe3O4-W. The electric current would be contributed to the movement of free electric charges (or ions) and colliding of electric polarized particles in MF-Fe3O4-W.

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A Photonic Crystal Magnetic Field Sensor Using a Shoulder-Coupled Resonant Cavity Infiltrated with Magnetic Fluid

Cited by 22 publications

References 48 publications

Recent Progress in Photonic Crystal Devices and Their Applications: A Review

Recent Progress in Photonic Crystal Devices and Their Applications: A Review

Optical properties of a point-defect nanocavity-based elliptical-hole photonic crystal for mid-infrared liquid sensing

Electric Current of Ferrofluid Depending on Temperature

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