Properties of Defect Modes in One-Dimensional Photonic Crystals

Wu, Chien Jang; Wang, Zhenghui

doi:10.2528/pier10031706

Cited by 110 publications

(61 citation statements)

References 22 publications

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“…Gradient-index optical materials have been used to fabricate interference filters [1,2] and environment sensors [10], and potential applications such as broadband laser protection eyewear and spectral beam splitter have also been demonstrated [11][12][13]. Many applications based on 1D photonic crystals are formed by repeating two or more distinct homogeneous dielectric layers with different refraction indices [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]; however, studies on 1D periodic dielectric structures with smoothly varying refraction index are still valuable, because of advantages such as reduced optical losses and better mechanical properties in contrast to discrete multilayer structures [13,[34][35][36][37]. To enlarge the omnidirectional photonic band gap, porous silicon dielectric mirrors formed by a periodic repetition of a Gaussian profile refractive index have been developed [8,9].…”

Section: Introductionmentioning

confidence: 99%

Phase Shift Defect Modes in One-Dimensional Asymmetrical Photonic Structures Consisting of Two Rugate Segments With Different Periodicities

Liu¹,

Lu²

2011

PIER

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Abstract-A theoretical study of optical properties of phase shift defects in one-dimensional asymmetrical photonic structures consisting of two rugate segments with different periodicities at both normal and oblique incidence is presented. Using the propagation matrix method we numerically calculated transmittance spectra, defect wavelengths, energy density distributions, and group velocities for TE and TM waves, respectively. Our study shows that by adjusting the periodicity of one rugate segment, the defect wavelengths can be shifted toward either a shorter wavelength or a longer wavelength. The differences of the energy density distributions of TE and TM waves at different angles of incidence are explained with the help of group velocity. Effects of the change of the period of one rugate segment on the peak energy densities of defect modes and minimum group velocities at different angles of incidence are also investigated.

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Section: Introductionmentioning

confidence: 99%

Phase Shift Defect Modes in One-Dimensional Asymmetrical Photonic Structures Consisting of Two Rugate Segments With Different Periodicities

Liu¹,

Lu²

2011

PIER

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“…The number of transmission peaks can be increased as the thickness of layer D increases. As a result, an FPR-type multichannel filter is obtainable [2]. Another filter structure is to replace the single defect layer D by a photonic quantum well (PQW), (CD) M , that is, the structure is (AB) N (CD) M (AB) N [3,4].…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Multichannel Transmission Filter Based on the Single-Negative Photonic Crystal

Wu¹,

Lee²,

Jian³

2013

PIER

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Abstract-In this work, the multiple filtering phenomenon in a photonic crystal made of single-negative (SNG) materials is investigated. We consider a finite photonic crystal (AB) N immersed in air, in which A, B are epsilon-negative (ENG) and mu-negative (MNG) materials, respectively, and N is the stack number. It is found that such a photonic crystal can function as a multichannel transmission filter with a channel number equal to N −1. The required condition is that the thickness of MNG layer must be larger than that of ENG layer when magnetic plasma frequency is greater than electric plasma frequency. The channel frequencies can be red-shifted as the thickness of MNG layer decreases. The channel positions can be tuned by the incidence angle for both TE and TM polarizations. That is, the peak frequency is blue-shifted when the angle of incidence increases. Additionally, the influence of the static permeability of ENG medium and permittivity of MNG medium is also illustrated. The proposed structure can thus be used to design as a tunable multichannel filter which is of technical use in signal processing.

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“…In 1998, Fink et al [3] pointed out that one-dimensional PCs (1DPCs) may have OBGs, and the general conditions for obtaining OBGs in 1DPCs are present. Since then, the OBGs in the 1DPCs have attracted great interest of many scientists [4,[7][8][9][10][11][12]. It is known that such an OBG has potential applications [13,14], such as, omnidirectional terahertz mirrors [15], controllable switching [16], tunable polarizer [17], narrowband filters [18], and refractometric optical sensing [19], etc.…”

Section: Introductionmentioning

confidence: 99%

Broad Omnidirectional Reflector in the One-Dimensional Ternary Photonic Crystals Containing Superconductor

Dai¹,

Xiang²,

Wen³

2011

PIER

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Abstract-A method to enlarge the omnidirectional photonic bandgaps (PBGs) has been presented in the one-dimensional photonic crystals by sandwiching a superconductor layer between two dielectric materials to form a one-dimensional ternary periodic structure. The angle-and thickness-dependence of these PBGs have been investigated in detail, and then the thermally-tunability of these omnidirectional PBGs by controlling external temperature of the superconductor is discussed. It is shown that these omnidirectional PBGs can be extended markedly in the one-dimensional ternary photonic crystal and the gap width or the wavelength range can also be tuned by varying external temperature.

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Properties of Defect Modes in One-Dimensional Photonic Crystals

Cited by 110 publications

References 22 publications

Phase Shift Defect Modes in One-Dimensional Asymmetrical Photonic Structures Consisting of Two Rugate Segments With Different Periodicities

Phase Shift Defect Modes in One-Dimensional Asymmetrical Photonic Structures Consisting of Two Rugate Segments With Different Periodicities

Design and Analysis of Multichannel Transmission Filter Based on the Single-Negative Photonic Crystal

Broad Omnidirectional Reflector in the One-Dimensional Ternary Photonic Crystals Containing Superconductor

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