Defect mode properties in a one-dimensional photonic crystal

Aly, Arafa H.; Elsayed, Hussein A.

doi:10.1016/j.physb.2011.09.137

Cited by 95 publications

(57 citation statements)

References 29 publications

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“…The transfer matrix method (TMM) is used to study the interaction between the incident electromagnetic (EM) waves (S-polarized) and the proposed structure. The details of TMM can be found in many articles [42][43][44][45][46] . The following matrices describe the proposed structure: Where p 0 = n 0 cos ϕ 0 (for prism) and p s = n s cos ϕ s (for Si substrate).…”

Section: Theoretical Modelmentioning

confidence: 99%

Refractive index gas sensor based on the Tamm state in a one-dimensional photonic crystal: Theoretical optimisation

Zaky

Ahmed

Shalaby

et al. 2020

Sci Rep

Self Cite

177

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Gas sensors are important in many fields such as environmental monitoring, agricultural production, public safety, and medical diagnostics. Herein, tamm plasmon resonance in a photonic bandgap is used to develop an optical gas sensor with high performance. the structure of the proposed sensor comprises a gas cavity sandwiched between a one-dimensional porous silicon photonic crystal and an Ag layer deposited on a prism. the optimised structure of the proposed sensor achieves ultra-high sensitivity (S = 1.9×10 5 nm/RiU) and a low detection limit (DL = 1.4×10 −7 RiU) compared to the existing gas sensor. the brilliant sensing performance and simple design of the proposed structure make our device highly suitable for use as a sensor in a variety of biomedical and industrial applications. Gas sensing has different applications in many fields such as the food industry, medicine, safety, environment, agriculture, and cosmetic 1,2. For example, the detection of volatile organic compounds such as acetone and toluene in exhaled breath is used as a biomarker for many diseases 3,4. In addition, the determination of the concentration of harmful gases such as CO 2 and N 2 O can be applied as an environmental pollution monitor 5. Currently, optical gas sensors are of great interest to researchers because they do not require complicated radioactive/fluorescent labels 6,7. Surface plasmon resonance, Tamm plasmon (TP) resonance, waveguide, and photonic crystal are all examples of platforms for optical sensing 8-12. Photonic crystals (PCs) are useful for a wide range of biomedical and environmental sensing applications. This is due to an impressive set of relevant properties, such as ultrahigh sensitivity, low detection limit, and fast response time 13,14. PC refers to a range of materials characterised by a periodic refractive index along one, two, or three dimensions (1DPC, 2DPC, or 3DPC, respectively). The propagation of electromagnetic waves in PCs can be controlled because of the photonic bandgap (PBG) 15-17. 1DPCs are more appropriate for most applications, given their low cost and ease of fabrication compared to 2DPCs and 3DPCs 18. Recently, PCs have been widely used in various sensor systems. A high-precision gas index sensor, which was proposed by Jágerská et al., reached a sensitivity of 510 nm/RIU based on a PC air-slot cavity 19. Hua-Jun studied a surface plasmon resonance nanocavity antenna array for use as a gas sensor with a high sensitivity of 3200 nm/RIU 20. Wang et al. suggested a guided-mode resonance gas sensor with a sensitivity as high as 748 nm/ RIU 21. Pevec and Donlagic designed a fiber-optic Fabry-Perot gas sensor with a sensitivity of 1550 nm/RIU 22. García-Rupérez et al. presented a highly sensitive device for antibody detection using the slow light regime of a PC waveguide 23. Chen et al. designed a PC/Ag/graphene structure to function as a refractive index sensor based on the Tamm state, with a numerical sensitivity of 1178.6 nm/RIU 24. Auguié et al. studied TP resonance at the interface between a meta...

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Section: Theoretical Modelmentioning

confidence: 99%

Refractive index gas sensor based on the Tamm state in a one-dimensional photonic crystal: Theoretical optimisation

Zaky

Ahmed

Shalaby

et al. 2020

Sci Rep

Self Cite

177

View full text Add to dashboard Cite

show abstract

“…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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“…La existencia de los BFP en CF da lugar a diferentes fenómenos ópticos entre los que podemos mencionar la inhibición de emisión espontanea, guiar la luz a través de circuitos ópticos, guías de ondas con pérdidas bajas y resonadores Fabry Perot (9) . La introducción de defectos que rompen la periodicidad espacial del CF, sean puntuales, lineales o planares, producen la localización de modos electromagnéticos o guiado de la radiación dentro del BFP (10)(11)(12) . Los defectos se introducen en el CF cambiando el espesor de las capas, insertando otro dieléctrico a la estructura, o removiendo una capa del CF.…”

Section: Introductionunclassified

Dependencia con la temperatura de los modos defecto en un Cristal fotónico unidimensional

Segovia-Chaves

Herrera

2018

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En el presente trabajo calculamos la dependencia con la temperatura de los modos localizados en espectro de transmitancia para un cristal fotónico unidimensional con dos defectos. La estructura considerada está formada por materiales de y . Haciendo uso del método de transferencia matricial para el caso de polarización TE con incidencia normal, se encuentra la presencia de dos modos defecto alrededor de la longitud de onda del diseño . Al tener en cuenta la dependencia con la temperatura del índice de refracción y de los espesores del cristal, se muestra un corrimiento a longitudes de onda largas de los modos defecto a medida que se incrementa la temperatura.

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Defect mode properties in a one-dimensional photonic crystal

Cited by 95 publications

References 29 publications

Refractive index gas sensor based on the Tamm state in a one-dimensional photonic crystal: Theoretical optimisation

Refractive index gas sensor based on the Tamm state in a one-dimensional photonic crystal: Theoretical optimisation

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

Dependencia con la temperatura de los modos defecto en un Cristal fotónico unidimensional

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