Defect mode in periodic and quasiperiodic one-dimensional photonic structures

Abdel‐Rahman, Ehab; Shaarawi, Amr M.

doi:10.1007/s10854-007-9496-x

Cited by 6 publications

(5 citation statements)

References 21 publications

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“…Among the papers published in MPCs properties, there are a number of reports in such structures with defect layers. The properties of the defect modes in different one-dimensional (1D) conventional PC and 1D MPC have been reported by several authors [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Properties of Defect Modes in Periodic Lossy Multilayer with Negative-Index-Materials

Aghajamali

Barati

2013

Commun. Theor. Phys.

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Transmission properties of one-dimensional lossy photonic crystals composed of negative and positive refractive index layers with one lossless defect layer at the center of the crystal are investigated by the characteristic matrix method. The results show that as the refractive index and thickness of the defect layer increase the frequency of the defect mode decreases. In addition, it is shown that the frequency of the defect mode is sensitive to the incidence angle, polarization and physical properties of the defect layer but it is insensitive to the small lattice loss factor. The height of the defect mode is very sensitive to the loss factor, incidence angle, polarization, refractive index and thickness of the defect layer. It was also shown that the height and the width of the defect mode are affected by the number of the lattice period and the loss factor.The results can lead to designing new types of narrow filter structures and other optical devices. * email address: alireza.aghajamali@fsriau.ac.ir † email address: barati@susc.ac.ir

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Section: Introductionmentioning

confidence: 99%

Properties of Defect Modes in Periodic Lossy Multilayer with Negative-Index-Materials

Aghajamali

Barati

2013

Commun. Theor. Phys.

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“…where θ cav has been defined in (19) and R(k) ≡ r 1 r 2 is the mutual reflectance of the substructures, related to the finesse of the resultant Fabry-Perot cavity by…”

Section: Fabry-perot Interference Condition From Scattering Theorymentioning

confidence: 99%

“…Therefore, the artificial palindrome scheme is a generalised mirror/edge, hosting twice the number of gap states as compared to any type of mirror. Noting that in the artificial palindrome case and using (6) and (7), the relevant scattering phase (19) for the artificial palindrome rewrites as,…”

Section: Gap States In a Fibonacci Quasicrystalmentioning

confidence: 99%

“…8.a). Thus, for any value of r 2 , the use of the condition (19) to calculate the gap state frequencies for P is justified. Specifically, if this condition is met within the spectral gap (orange arrows in Fig.…”

Section: Gap States In a Fibonacci Quasicrystalmentioning

confidence: 99%

“…Although less known than the periodic case, gap states may be easily induced in spectral gaps of quasiperiodic structures. For instance, in the case of the Fibonacci photonic quasiperiodic chain, gap states of all kinds have been observed: defect [19], boundary [20,21] and interface [22,23] gap states. The origin of such gap states in structures lacking a definite spatial symmetry is not that obvious.…”

Section: Introductionmentioning

confidence: 99%

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Topological boundary states in 1D: An effective Fabry-Perot model

Levy

Akkermans

2017

Eur. Phys. J. Spec. Top.

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Abstract. We present a general and useful method to predict the existence, frequency, and spatial properties of gap states in photonic (and other) structures with a gapped spectrum. This method is established using the scattering approach. It offers a viewpoint based on a geometrical Fabry-Perot model. We demonstrate the capabilities of this model by predicting the behaviour of topological edge states in quasi-periodic structures.

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