Polarization-independent omnidirectional defect modes in Bragg gaps of one-dimensional photonic crystals

Makhan, Mahendra; Ramchurn, S.K.

doi:10.1364/josab.24.003040

Cited by 13 publications

(2 citation statements)

References 16 publications

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“…[13][14][15] Unusual transmission features can be realized when defects are made of a left-handed material, for example, enabling multiple-wavelength omnidirectional filters. 16 The defect-mode originated transmittance can be interpreted in terms of an equivalent Fabry-Pérot resonator with either planar mirrors placed at virtual interfaces of a PC ͑in the both cases of multiple narrow defects and a single wide defect͒, or volumetric mirrors representing pieces of a regular PC, which delimit a wide defect working as a resonator. 13 In a lossless case, defect modes lead to the total-transmission peaks.…”

Section: Introductionmentioning

confidence: 99%

Defect-mode-like transmission and localization of light in photonic crystals without defects

Serebryannikov¹,

Özbay

Usik

2010

Phys. Rev. B

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It is shown that far- and near-field effects, which are similar to those arising in transmission through finite-thickness photonic crystals (PCs) with structural defects, can be obtained in the conventional defect-free dielectric square-lattice PCs. Multiple narrow peaks of total transmission can appear within a frequency range, where the noncircular isofrequency dispersion contours of one type are quickly transformed for a higher-order Floquet-Bloch wave to the noncircular contours of the other type, leading to a frequency-domain passband being very narrow within a certain range of variation of the angles of incidence. In this regime, the mirror reflectance of the equivalent Fabry-Pérot resonator takes rather large values, which correspond to large values of Q factor and group index of refraction, strong field localization, and good isolation of the transmission peaks from each other. In some examples presented, Q factor exceeds 104. © 2010 The American Physical Society

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Section: Introductionmentioning

confidence: 99%

Defect-mode-like transmission and localization of light in photonic crystals without defects

Serebryannikov¹,

Özbay

Usik

2010

Phys. Rev. B

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“…The concept of photonic crystal (PC) structure was first introduced by Yablonovitch [1] and Sanjeev John [2] in their early work of 1987. A PC is an artificial material with a periodic modulation of its dielectric constant and having ranges of forbidden frequencies called photonic bandgaps (PBGs), analogous to electric bandgaps in semiconductors [3]. PCs have attracted a great deal of attention as a new optical material in recent years [1,[4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Design of a Tunable Optical Filter by Using a One-Dimensional Ternary Photonic Band Gap Material

Awasthi¹,

Ojha²

2008

PIER M

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A band pass filter with a linearly periodic refractive index profile is discussed in analogy with Kroning Penney model in band theory of solids. The suggested filter is a one-dimensional ternary periodic structure and provides better control in dispersion relation as compared to a binary structure because it has two more controlling parameters relative to those of the binary one. Since three layers are involved in the formation of band gaps a much broader range of dispersion control is obtained. Both refractive index modulation and optical thickness modulation are considered. A mathematical analysis is presented to predict allowed and forbidden bands of wavelength with variation of angle of incidence. It is also possible to get desired ranges of the electromagnetic spectrum filtered with this structure by manipulating the value of the lattice parameters.

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Polarization-independent low-pass spatial filters based on one-dimensional photonic crystals containing negative-index materials

et al. 2009

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Polarization-independent omnidirectional defect modes in Bragg gaps of one-dimensional photonic crystals

Cited by 13 publications

References 16 publications

Defect-mode-like transmission and localization of light in photonic crystals without defects

Defect-mode-like transmission and localization of light in photonic crystals without defects

Design of a Tunable Optical Filter by Using a One-Dimensional Ternary Photonic Band Gap Material

Polarization-independent low-pass spatial filters based on one-dimensional photonic crystals containing negative-index materials

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