Metamaterial Polarization Multiplexed Gratings

Tsai, Yu-Ju; Tyler, Talmage; Larouche, Stéphane; Llopis, Antonio; Royal, Matthew; Jokerst, N.M.; Smith, David R.

doi:10.1364/cleo_qels.2013.qm4a.1

Cited by 3 publications

(5 citation statements)

References 3 publications

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“…Recently, metasurfaces in metal/insulator/metal (MIM) configuration have been widely used in photonic research [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Such structures typically consist of a layer of planar metallic resonators and a continuous metallic film separated by a dielectric spacer (see Fig.…”

Section: Introductionmentioning

confidence: 99%

“…1(a)). Based on MIM metasurfaces, a variety of wave-manipulation effects have been realized in a wide frequency range, including perfect absorption [2][3][4][5], polarization control [6][7][8], phase modulation [9][10][11], anomalous light reflection [12][13][14], flat-lens focusing [15,16], and holograms [17,18].…”

Section: Introductionmentioning

confidence: 99%

“…However, whereas full-wave simulations can well reproduce the discovered phenomena on such systems [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20], the inherent physics underlying these distinct effects remains obscure. In particular, why and with what parameters can these MIM metasurfaces exhibit certain functionalities (e.g., perfect absorption, phase modulation, etc.)…”

Section: Introductionmentioning

confidence: 99%

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Tailor the Functionalities of Metasurfaces Based on a Complete Phase Diagram

et al. 2015

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Abstract:Metasurfaces in metal/insulator/metal configuration have recently been widely used in photonics research, with applications ranging from perfect absorption to phase modulation, but why and when such structures can realize what kind of functionalitiesare not yet fully understood. Here, based on a coupled-mode theory analysis, we establish a complete phase diagram in which the optical properties of such systems are fully controlled by two simple parameters (i.e., the intrinsic and radiation losses), which are in turn dictated by the geometrical/material parameters of the underlying structures. Such a phase diagram can greatly facilitate the design of appropriate metasurfaces with tailored functionalities (e.g., perfect absorption, phase modulator, electric/magnetic reflector, etc.), demonstrated by our experiments and simulations in the Terahertz regime. In particular, our experiments show that, through appropriate structural/material tuning, the device can be switched across the functionality phase boundaries yielding dramatic changes in optical responses. Our discoveries lay a solid basis for realizing functional and tunable photonic devices with such structures.3

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tailor the Functionalities of Metasurfaces Based on a Complete Phase Diagram

et al. 2015

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“…The EM characteristics of metamaterials rely on the pattern and order of the meta-atom (Cui, 2017). In the past few decades, metamaterial-inspired devices, such as the frequency selective filter (Khan and Eibert, 2018;Zhang et al, 2021a), perfect absorber (Peng et al, 2019;Zhang et al, 2021b), holographic imaging (Tsai et al, 2013;Wan et al, 2017), and meta-lens (Pendry, 2000), have found variety of applications in academia and industries (Zhang et al, 2021c;Dong et al, 2022;Wang et al, 2022). Among these applications, metamaterial absorbers (MMA) have been realized in the spectrum ranging from microwave to optics.…”

Section: Introductionmentioning

confidence: 99%

Fussy Inverse Design of Metamaterial Absorbers Assisted by a Generative Adversarial Network

et al. 2022

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The increasing demands for metasurfaces have led researchers to seek effective inverse design methods, which are counting on the developments in the optimization theory and deep learning techniques. Early approaches of the inverse design based on deep learning established a unique mapping between the device’s geometry parameters and its designated EM characteristics. However, the generated solution based on the traditional inverse design method may not be applicable due to practical fabrication conditions. The designers sometimes want to choose the most practical one from multiple schemes which can all meet the requirements of the given EM indicators. A fuzzy inverse design method is quite in demand. In this study, we proposed a fuzzy inverse design method for metamaterial absorbers based on the generative adversarial network (GAN). As a data-driven method, self-built data sets are constructed and trained by the GAN, which contain the absorber’s design parameters and their corresponding spectral response. After the training process is finished, it can generate multiple possible schemes which can satisfy the customized absorptivity and frequency bands for absorbers. The parameters generated by this model include structure sizes and impedance values, which indicates that it has the ability to learn a variety of features. The effectiveness and robustness of the proposed method have been verified by several examples for the design of both narrowband and broadband metamaterial absorbers. Our work proves the feasibility of using deep learning methods to break the limits of one-to-one mapping for the traditional inverse design method. This method may have profound usage for more complex EM device design problems in the future.

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“…Further versality could be achieved if not only the magnitude of the birefringence but also its type could be dynamically changed, for example, to go from linear to circular birefringence. Artificially structured metamaterials [1][2] have been designed to offer arbitrary birefringence, which can offer additional degrees of freedom in the design of optical systems [3]. Devices able to dynamically change its fundamental properties can be leveraged to enlarge the collection of reconfigurable optical systems in fields such as optical networks and sensing.…”

Section: Introductionmentioning

confidence: 99%

Brillouin-Induced Dynamic Arbitrary Birefringence

Samaniego

Zoireff

Vidal

2021

J. Lightwave Technol.

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A nonlinear method to generate and control both the type and magnitude of the birefringence, as well as differential group delay (DGD) in optical fibers is studied. Experiments show that both parameters of birefringence can be dynamically changed with only a slight variation of the SBS-induced gain of the system. The method is based on exploiting polarization dependence of stimulated Brillouin scattering in optical fibers. The generation of controlled DGD and DGD dispersion (DGDD) is also demonstrated. Proof-of-concept experiments are provided showing the feasibility of dynamically inducing linear, circular and elliptical birefringence, as well as DGD and DGDD.

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Metamaterial Polarization Multiplexed Gratings

Cited by 3 publications

References 3 publications

Tailor the Functionalities of Metasurfaces Based on a Complete Phase Diagram

Tailor the Functionalities of Metasurfaces Based on a Complete Phase Diagram

Fussy Inverse Design of Metamaterial Absorbers Assisted by a Generative Adversarial Network

Brillouin-Induced Dynamic Arbitrary Birefringence

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