Results 11 to 20 of about 2,648,113 (296)

Photonic Bloch Waves and Photonic Band Gaps [PDF]

, 1995
Photonic band gap materials are dielectrics with a synthetic, three dimensional, multiply periodic microstructure (lattice constant of order the optical wavelength) whose distinguishing feature is a very large modulation depth of refractive index. When appropriately designed, these "photonic crystals" exhibit ranges of optical frequency where light ...
Russell, Philip St.J., Birks, Timothy A., Lloyd-Lucas, F.Dominic   +2 more
openaire   +1 more source

Near Infrared -Visible Photonic Bandgap in One-Dimensional Periodic Photonic Crystal Structure Composed of Tio2/Te Layers

International Journal of Electronics and Communications System, 2023
In this present paper, we consider some features of the states of one-dimensional photonic crystals. Form the numerical results performed by transfer matrix method in periodic multilayer structure made of titanium dioxide and tellurium material, it is ...
Shalaw Saman Khalid, Sarkew Salah Abdulkareem, Sana Latif Ahmed, Sana Dishad Talib, Shahla Ahmed Ghidan   +4 more
doaj   +1 more source

Highly dispersive photonic band-gap-edge optofluidic biosensors [PDF]

Journal of the European Optical Society-Rapid Publications, 2006
Highly dispersive photonic band-gap-edge optofluidic biosensors are studied theoretically. We demonstrate that these structures are strongly sensitive to the refractive index of the liquid, which is used to tune dispersion of the photonic crystal.
Xiao Sanshui, Mortensen Niels Asger
doaj   +1 more source

Photonic Band-Gap Inhibition of Modulational Instabilities [PDF]

Physical Review Letters, 2004
Spatial structures as a result of a modulational instability are studied in a nonlinear cavity with a photonic crystal. The interaction of the modulated refractive index with the nonlinearity inhibits the instability via the creation of a photonic band gap. A novel mechanism of light localization due to defects and pattern inhibition is also described.
Gomila, Damià, Zambrini, Roberta, Oppo, Gian-Luca   +2 more
openaire   +5 more sources

Simultaneous Existence of Phononic and Photonic Band Gaps in Phoxonic Crystal Slabs [PDF]

, 2010
We discuss the simultaneous existence of phononic and photonic band gaps in a periodic array of holes drilled in a Si membrane. We investigate in detail both the centered square lattice and the boron nitride (BN) lattice with two atoms per unit cell ...
Papanikolaou, N., V. Laude, B. Djafari Rouhani, Vasseur, Jerome O., El Hassouani, Y., ElBoudouti, EH, Li, C., DjafariRouhani, Bahram, Y. El Hassouani, Papanikolaou, Nikos, C. Li, N. Papanikolaou, Pennec, Y., El Boudouti, E.H., Pennec, Yan, ElHassouani, Y., Martinez, Alejandro, A. Martinez, Laude, Vincent, Djafari-Rouhani, Bahram, Benchabane, Sarah, Vasseur, J., Rouhani, B. Djafari, Y. Pennec, Li, Chanseng, El Boudouti. E. H., J. O. Vasseur, Benchabane, Samir, E. H. El Boudouti, Vasseur, J. O., S. Benchabane   +30 more
core   +1 more source

Fabrication of 3D photonic band gap crystals for controlling the emission of light [PDF]

EPJ Web of Conferences
3D photonic band gap crystals can be used to manipulate light, for example to increase the emission of an emitter. An inverse woodpile photonic band gap crystal has been fabricated in silicon by FIB lithography and reactive ion etching.
Goodwin Melissa J., Vreman Timon J., Harteveld Cornelis A. M., Kamphuis Geert-Jan, Schulz Andreas S., Lagendijk Ad, Vos Willem L.   +6 more
doaj   +1 more source

Characteristics of optical system generating ultra-wide photonic band gap and its potential practicability

Results in Physics, 2023
In this study, we design a one-dimensional periodic ring multi-connected optical waveguide network to solve the problem of obtaining ultra-wide photonic band gaps that are too complex for the photonic band gap width to be tuned.
Yan Zhi, Weici Liu, Xiangbo Yang, Zhongchao Wei, Shiping Du, Hongyun Meng, Hongzhan Liu, Jianping Guo, Liujing Xiang, Zhenming Huang, Haoxian Li, Faqiang Wang   +11 more
doaj   +1 more source

Photonic band gaps [PDF]

Physics World, 1992
Many major discoveries in physics this century originate from the study of waves in periodic structures. Examples include X-ray and electron diffraction by crystals, electronic band structure and holography. Analogies between disciplines have also led to fruitful new avenues of research.
openaire   +2 more sources

Superprism phenomena in planar photonic crystals [PDF]

, 2002
We utilize the anomalous dispersion of planar photonic crystals near the dielectric band edge to control the wavelength-dependent propagation of light. We typically observe an angular swing of up to 10degrees as the input wavelength is changed from 1290 ...
Wu, L, Krauss, Thomas Fraser, Karle, T, Mazilu, M   +3 more
core   +1 more source

Bandwidth enhancement for small patch antenna using PBG structure for different wireless applications [PDF]

, 2009
A design strategy using Photonic Band Gap (PBG) structure on ground plane to achieve wider bandwidth for patch antenna is presented. It is found that, the impedance bandwidth has improved from 3.72% to 31.9% at centre frequency 9 GHz after adding PBG on ...
AbuTarboush, HF, Nilavalan, R, Al-Raweshidy, H   +2 more
core   +7 more sources