Guiding Properties of a Photonic Quasi-Crystal Fiber Based on the Thue–Morse Sequence

Ferrando, Vicente; Coves, Á.; Andrés, Pedro; Monsoriu, Juan A.

doi:10.1109/lpt.2015.2444991

Cited by 9 publications

(4 citation statements)

References 31 publications

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“…21,22 Based on this, TMS-based devices have been explored for various unique applications such as development of narrowband filters 23 and omnidirectional reflectors. 24,25 Researchers have examined the physical characteristics of TMS-based devices, including the transmission characteristics of TMS ternary plasma PhCs, 26 two-dimensional TMS, 27 porous silicon TMS, 28 photonic quasi-crystal fiber based on the TMS, 29 Thue-Morse ordered superconducting PhCs, 30 and multicomponent TMS. 31 However, less work is carried out to distinguish the localization feasibility of various optical interface edge-states at oblique incidence angles in these disordered photonic structures, especially Thue-Morse sequence-based systems.…”

Section: Introductionmentioning

confidence: 99%

Analysis of interface mode localization in disordered photonic crystal structure

2022

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A disordered photonic crystal (D-PhC) structure is analyzed to study the interface mode localization characteristics. The design comprises a bilayer-disordered PhC structure, where layers are arranged in Thue-Morse sequence (TMS). The impact of local symmetric substructures on eigenstates coupling is also considered over a wider wavelength range. The mode hybridization study is carried out for varying refractive index contrast values of TMS structures at an operating wavelength of 550, 632.8, and 750 nm, respectively. The dispersion analysis confirms the localization of bulk guided, and edge-guided modes for different incidence angles at the structural local resonators. Further, increasing the RI contrast value leads to generation of hybrid interface modes of very high electric field intensity. Thus, showing its potential applications in both sensing and light guiding applications. Moreover, because of the higher surface electric field intensity this structure can also be used for fluorescence-based detection and surface-enhanced Raman spectroscopy as well.

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Section: Introductionmentioning

confidence: 99%

Analysis of interface mode localization in disordered photonic crystal structure

2022

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“…These types of photonic crystals are generated according to determine rules containing the Fibonacci and Thue-Morse (ThM) sequences and are formed from dielectric stacks like photonic crystals. Examples of these quasi-photonic crystals are Fibonacci, [8−9] Thue-Morse, [10] and double-period [11] structures. Quasi-photonic crystals have a large photonic band gap and unique properties in transmitting and guiding of waves [12] and exhibit various applications such as designing filters.…”

Section: Introductionmentioning

confidence: 99%

Design of Tunable Devices at Terahertz Frequencies Based on Quasi-Photonic Crystals Incorporated with Graphene

Ghayoor¹,

Keshavarz²

2019

Commun. Theor. Phys.

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In this study, we present a new theoretical model including Thue-Morse and double-period sequences as quasi-photonic crystals are incorporation with graphene and investigate the transmission properties of the THz waves in both structures using a straightforward computational method. We also consider properties of nonlinear conductivity in addition to surface linear conductivity for graphene. We observe the sharp peaks and proper forbidden bands are created in the range of 0.3 THz to 30 THz. In addition, we find that by considering the nonlinear term of graphene and engineering the structural parameters such as the chemical potential of graphene, number of layers and the incidence wave angle, transmission levels of peaks enhance scientifically and quality factor improve considerably. These results show that it would be possible to design of high-Q tunable filters with multi-stop bands in the THz regime which can reduce the noise associated with THz frequency peaks and increase the number of sharp frequency peaks.

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“…Recently, a renewed interest in periodic dielectric media is being observed, which can be attributed to the many interesting properties and practical applications of electromagnetic and photonic bandgap structures [1]. An enormous range of technological developments have become possible thanks to engineering materials that respond to electromagnetic waves over a desired range of frequencies by perfectly reflecting them, like in multilayer dielectric mirrors [2], or allowing them to propagate only in certain directions, like in photonic crystal waveguides [3] or photonic crystal fibers [4], [5]. Dielectric Frequency Selective Surfaces (DFSS) can be considered a fundamental key component in multilayer periodic dielectric structures, and their propagation characteristics have proven to play an important role in the design procedure of many microwave and optical devices [6]- [8].…”

Section: Introductionmentioning

confidence: 99%

Study of periodic Dielectric Frequency-Selective Surfaces under 3D plane wave incidence

Coves

Marini

Gimeno

et al. 2016

2016 Progress in Electromagnetic Research Symposium (PIERS)

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A periodic Dielectric Frequency-Selective Surface (DFSS) is studied under 3D plane-wave incidence, whose unit cell in the periodic direction is composed of a dielectric grating and a homogeneous dielectric layer. The structure is excited by a linearly polarized planewave. The procedure for computing the Brillouin diagram of the structure under 2D plane-wave incidence with TE or TM polarization was already described by the authors, and the extension to the 3D incidence case has been performed in a similar way. Following the same formalism, it has been obtained the Generalized Scattering Matrix (GSM) of one period of the infinite periodic lattice. This requires the knowledge of the modal spectrum in both homogeneous and periodic dielectric media. To this end, a numerical technique based on a vectorial modal method originally proposed by the authors has been used. Once the S matrix of one period of the periodic medium is computed, the corresponding generalized ABCD matrix of the unit cell can be easily derived, which provides a standard multimodal eigenvalue matrix problem whose solution yields the transverse field distributions and the modal propagation constants in the periodic lattice. In the 3D incidence case, a given number of modes considered in the construction of the ABCD matrix yields the dispersion diagram of TE and TM modes simultaneously. The identification of the modes can be easily performed through the comparison of their dispersion diagram with the reflectance spectra of the structure under a given incidence polarization (TE or TM). Finally, some numerical result effects, varying the incidence direction of the exciting plane-wave in the dispersion diagram of an Electromagnetic Band Gap (EBG) material, are shown.

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Guiding Properties of a Photonic Quasi-Crystal Fiber Based on the Thue–Morse Sequence

Cited by 9 publications

References 31 publications

Analysis of interface mode localization in disordered photonic crystal structure

Analysis of interface mode localization in disordered photonic crystal structure

Design of Tunable Devices at Terahertz Frequencies Based on Quasi-Photonic Crystals Incorporated with Graphene

Study of periodic Dielectric Frequency-Selective Surfaces under 3D plane wave incidence

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