Large positive and negative lateral optical beam shift in prism-waveguide coupling system

Liu, Xuanbin; Cao, Zhang; Zhu, Ping; Shen, Qishun; Liu, Xiangmin

doi:10.1103/physreve.73.056617

Cited by 87 publications

(53 citation statements)

References 20 publications

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“…It turns out that the above description is very general and can be extended to a multilayer device such as a prismcoupled waveguide system [29,30] and a four-layer Sarid geometry [37,38]. We give a brief summary of the results as follows.…”

Section: Theoretical Modelmentioning

confidence: 95%

“…d 2 λ), we have exp(2ik 2z d 2 ) 1. Under this condition, it can be shown that the reflectivity in (1) can be approximately described by two damping rates in the form [29,30] …”

Section: Theoretical Modelmentioning

confidence: 96%

“…Hence under these approximations, the SP reflectance curve of the 4-layer system can be described by a Lorentzian function of the form [29,30]:…”

Section: Theoretical Modelmentioning

confidence: 99%

“…One of these approaches is to exploit resonance conditions in specially designed optical structures. Over the last two decades, for example, such large shifts have been observed from various systems including resonant absorption from gas vapor layer deposited at a transparent interface [28], at waveguides [29][30][31][32], and at surface plasmon resonance (SPR) devices [33][34][35].…”

Section: Introductionmentioning

confidence: 99%

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Temperature dependence of the surface-plasmon-induced Goos–Hänchen shifts

et al. 2011

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Optical sensing of temperature variations is explored by studying the Goos-Hänchen (GH) lateral shift of a reflected light beam from various device based on the surface plasmon (SP) excitation at metal-dielectric interfaces. Both the Kretchman and the Sarid geometry will be considered, where the temperature variations of the GH shifts associated with excitation of both the regular and the long-range SP will be studied. It is found that while the SP-induced shifts and their temperature sensitivities are much greater than those from a bare metallic surface, these sensitivities are comparable between the shifts induced by the different kinds of SP, although the long-range SP can in general in-

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Section: Theoretical Modelmentioning

confidence: 95%

“…d 2 λ), we have exp(2ik 2z d 2 ) 1. Under this condition, it can be shown that the reflectivity in (1) can be approximately described by two damping rates in the form [29,30] …”

Section: Theoretical Modelmentioning

confidence: 96%

“…Hence under these approximations, the SP reflectance curve of the 4-layer system can be described by a Lorentzian function of the form [29,30]:…”

Section: Theoretical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Temperature dependence of the surface-plasmon-induced Goos–Hänchen shifts

et al. 2011

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“…According to the stationary-phase method, the lateral shift of the metal-insulator-metal structure can be written as [10] where k 0 is the wave number in vacuum, the ɛ 1 and μ 1 are the relative permittivity and permeability. Here, φ = a tan 2W Im(�β)…”

Section: Principle and Theoretical Analysismentioning

confidence: 99%

Thermo-optic Goos–Hänchen effect in silicon-on-insulator waveguide

et al. 2015

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has attracted much attention of researchers, and large lateral shift has been realized in different structures for its potential applications in integrated optics, optical storage, and optical sensors, such as a Krestschmann configuration with longrange surface plasmon resonance and a prism-waveguide system with gold layer. Wang et al. [3] investigated the tunable lateral shifts in a Kretschmann configuration with an electro-optic crystal prism based on the surface plasmon resonance and Pockels effect. In a prism-waveguide system with gold layer, the positive and negative lateral shifts were studied, and the enhancement of GH effect can be widely used in the detection of surface irregularities and roughness because of its great improvement of sensitivity [4]. In 2013, Wang proposed a high-sensitivity temperature sensor based on the enhanced GH effect in a symmetrical metal-cladding waveguide [5]. The temperature change induces the GH shift change which can be detected by the position-sensitive detector (PSD). The sensor exhibits a good linearity and a high resolution of approximately 5 × 10 −3 °C.Silicon-on-insulator (SOI) waveguide structures are very promising in the application areas, such as optical interconnects in high-speed microprocessors and on-chip control circuits with optoelectronics for wavelength division multiplexing. They are characterized by small optical losses over communication wavelengths and fully compatible with CMOS technology and micromechanical devices [6,7]. Silicon is available in large size, good quality, and low price, and its technology is highly developed. A typical SOI waveguide has a silicon core and a silica cladding. As silicon's thermo-optic effect [8] is significantly larger than its electro-optic effect [9], it is an attractive method to modulate the refractive index in SOI waveguides. As devices and components based on thermo-optic (TO) effect show low transmission loss, low cost, high stability, low power consumption, and very large scale of integration, the TO effect Abstract We study the thermo-optic Goos-Hänchen (TOGH) effect in a prism-waveguide coupling structure with silicon-on-insulator waveguide. Stationary-phase method is utilized to calculate the TOGH shift. When the waveguide is regarded as a two-dimensional planar waveguide, a nonlinear relation between GH shift and temperature is obtained. Based on the noticeable TOGH effect, a sensitive temperature modulator or sensor can be realized. As the waveguide width is limited, the proposed structure can be regarded as a three-dimensional rectangular waveguide. We explore the GH shift and TOGH effect for different modes propagating in rectangular waveguide which show different linear relations between GH shift and temperature, which can be used to design mode-selective device based on TO effect.

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Phase‐Change‐Material‐Based Low‐Loss Visible‐Frequency Hyperbolic Metamaterials for Ultrasensitive Label‐Free Biosensing

Sreekanth

Ouyang

Sreejith

et al. 2019

Advanced Optical Materials

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The extreme anisotropic permittivity of hyperbolic metamaterials (HMMs) represent a unique opportunity to realize effective bulk metastructures with extraordinary optical properties over a broad frequency range from visible to terahertz. [1] HMMs are artificial uniaxial materials that exhibit hyperbolic dispersion because the out of plane dielectric constant (ε zz = ε ⊥ ) has an opposite sign to the in-plane dielectric constants (ε xx = ε yy = ε ll ). HMMs can be classified into two types based on the sign of their dielectric components, i.e., type I (−ε ⊥ and ε ll ) and type II (ε ⊥ and −ε ll ). In comparison to isotropic materials showing elliptical dispersion, HMMs support propagation of optical modes across the structure with infinitely large momentum (high-k modes) in the effective medium limit, [2,3] irrespective of Hyperbolic metamaterials (HMMs) have emerged as a burgeoning field of research over the past few years as their dispersion can be easily engineered in different spectral regions using various material combinations. Even though HMMs have comparatively low optical loss due to a single resonance, the noble-metal-based HMMs are limited by their strong energy dissipation in metallic layers at visible frequencies. Here, the fabrication of noble-metal-free reconfigurable HMMs for visible photonic applications is experimentally demonstrated. The low-loss and active HMMs are realized by combining titanium nitride (TiN) and stibnite (Sb 2 S 3 ) as the phase change material. A reconfigurable plasmonic biosensor platform based on active Sb 2 S 3 -TiN HMMs is proposed, and it is shown that significant improvement in sensitivity is possible for small molecule detection at low concentrations. In addition, a plasmonic apta-biosensor based on a hybrid platform of graphene and Sb 2 S 3 -TiN HMM is developed and the detection and real-time binding of thrombin concentration as low as 1 × 10 −15 m are demonstrated. A biosensor operating in the visible range has several advantages including the availability of sources and detectors in this region, and ease of operation particularly for point-of-care applications.

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Large positive and negative lateral optical beam shift in prism-waveguide coupling system

Cited by 87 publications

References 20 publications

Temperature dependence of the surface-plasmon-induced Goos–Hänchen shifts

Temperature dependence of the surface-plasmon-induced Goos–Hänchen shifts

Thermo-optic Goos–Hänchen effect in silicon-on-insulator waveguide

Phase‐Change‐Material‐Based Low‐Loss Visible‐Frequency Hyperbolic Metamaterials for Ultrasensitive Label‐Free Biosensing

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