Mems Based Deep 1d Photonic Crystal
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Mems Based Deep 1d Photonic Crystal
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Author : Maurine Malak
language : en
Publisher:
Release Date : 2012
Mems Based Deep 1d Photonic Crystal written by Maurine Malak and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
Mems Enabled Tunable Photonic Crystals
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Author : Yonghao Cui
language : en
Publisher:
Release Date : 2010
Mems Enabled Tunable Photonic Crystals written by Yonghao Cui and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Microelectromechanical systems categories.
Photonic crystal devices have been extensively researched in the past two decades due to its ability to generate and manipulate the electromagnetic waves in compact scales. Numerous non-conventional optical phenomena such as negative refraction, super lensing, superprism, sharp bending of light with low loss, and slow light were demonstrated due to their unique photonic band structures. However, most of the devices are passive devices without any means of external control. Since the photonic band structure is closely related to the refractive index of its composing material and lattice structure, modulation of the refractive index through thermo-optic effect or modification of the lattice structures by mechanical stretching would lead to change of the photonic band structure and result in active tuning of the photonic crystals. This work is a study on the Micro-Electro-Mechanical Systems (MEMS) based tunable photonic crystals as MEMS is ideally positioned to be integrated with photonic crystal to locally provide needed external excitation.
One Dimensional Microwave Photonic Crystals
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Author : D.A. Usanov
language : en
Publisher: CRC Press
Release Date : 2019-05-01
One Dimensional Microwave Photonic Crystals written by D.A. Usanov and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-05-01 with Science categories.
Explores theoretical and experimental studies of the properties of one-dimensional photonic crystals. The authors also consider the possibilities of controlling the characteristics of microwave photonic crystals with the help of electric and magnetic fields and provide examples of new fields of application of microwave photonic crystals. They review measurements of the parameters of layered structures containing nanometer-sized semiconductor and metal layers and explore microwave-compatible loads. Written for specialists and scientists working in the fields of radiophysics, microwave solid-state electronics, and microwave photonics. Key selling features: Presents studies of theoretical and experimental properties of one-dimensional photonic crystals Analyzes microwave photonic crystals based on flat transmission lines. Explores the use of electric and magnetic fields to control crystal characteristics. Reviews applications of photonic crystals in semiconductors. Examines one-dimensional microwave photonic crystals based on rectangular wave guides.
Theoretical Foundations And Application Of Photonic Crystals
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Author : Alexander Vakhrushev
language : en
Publisher: BoD – Books on Demand
Release Date : 2018-04-04
Theoretical Foundations And Application Of Photonic Crystals written by Alexander Vakhrushev and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-04-04 with Technology & Engineering categories.
This book is devoted to the description of research and design of photonic crystals. Topics included in the book cover a wide range of research in the field of theoretical analysis and experimental investigation: the electromagnetic field in the photonic crystal, propagation of waves in the gyrotropic magnetophotonic crystals, low one-photon absorption, ultratransparent photonic crystals, colloidal assembly, photonic crystal application for development of all-optical computational system, design strategies for PC devices, self-organization of liquid crystalline nanostructures, and optical diodes. This book will be useful for engineers, technologists, researchers, and postgraduate students interested in the research, design, fabrication processes, and applications of photonic crystals.
Photonic Crystals
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Author : Kuon Inoue
language : en
Publisher: Springer
Release Date : 2013-11-11
Photonic Crystals written by Kuon Inoue and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-11-11 with Technology & Engineering categories.
Photonic crystals are a very hot topic in photonics. The basics, fabrication, application and new theoretical developments in the field of photonic crystals are presented in a comprehensive way, together with a survey of the advanced state-of-the-art report.
1d Photonic Crystal Nanocavities For Optical Sensing
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Author : Muhammad Ghazali Abdul Rahman
language : en
Publisher:
Release Date : 2017
1d Photonic Crystal Nanocavities For Optical Sensing written by Muhammad Ghazali Abdul Rahman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
Photonic Crystal Mirrors
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Author : Sora Kim
language : en
Publisher:
Release Date : 2008
Photonic Crystal Mirrors written by Sora Kim and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Study Of Electronic Properties Of 1d Photonic Crystal
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Author : Arpan Deyasi
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2014-10-10
Study Of Electronic Properties Of 1d Photonic Crystal written by Arpan Deyasi and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-10-10 with categories.
In this work, band structure, density of states and wave propagation inside one-dimensional photonic crystal is numerically computed using both the transfer matrix method and plane wave expansion method. Rigorous mathematical computation is carried out and simulated results are given for conventional SiO2-air composition as well as for novel semiconductor heterostructure also. Group theoretic approach is used to study photonic crystal structure which will help for better modelling of the devices based on 1D PC. Density of states analysis provides insight about the possible red/blueshift by tuning the material composition or dimension along the electromagnetic wave propagation; which forecasts the use of possible photonic filter design using proposed semiconductor composition supported by reflectivity calculation in optical communication wavelength. Though the work in this study is quite in its elementary stage, but this trivial work will definitely help the future research students to progress.
Design Fabrication And Characterisation Of Silicon Based One Dimensional Photonic Crystal Structures
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Author : Siobhán Margaret O'Neill
language : en
Publisher:
Release Date : 2008
Design Fabrication And Characterisation Of Silicon Based One Dimensional Photonic Crystal Structures written by Siobhán Margaret O'Neill and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Computational Study And Analysis Of Structural Imperfections In 1d And 2d Photonic Crystals
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Author :
language : en
Publisher:
Release Date : 2005
Computational Study And Analysis Of Structural Imperfections In 1d And 2d Photonic Crystals written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
Dielectric reflectors that are periodic in one or two dimensions, also known as 1D and 2D photonic crystals, have been widely studied for many potential applications due to the presence of wavelength-tunable photonic bandgaps. However, the unique optical behavior of photonic crystals is based on theoretical models of perfect analogues. Little is known about the practical effects of dielectric imperfections on their technologically useful optical properties. In order to address this issue, a finite-difference time-domain (FDTD) code is employed to study the effect of three specific dielectric imperfections in 1D and 2D photonic crystals. The first imperfection investigated is dielectric interfacial roughness in quarter-wave tuned 1D photonic crystals at normal incidence. This study reveals that the reflectivity of some roughened photonic crystal configurations can change up to 50% at the center of the bandgap for RMS roughness values around 20% of the characteristic periodicity of the crystal. However, this reflectivity change can be mitigated by increasing the index contrast and/or the number of bilayers in the crystal. In order to explain these results, the homogenization approximation, which is usually applied to single rough surfaces, is applied to the quarter-wave stacks. The results of the homogenization approximation match the FDTD results extremely well, suggesting that the main role of the roughness features is to grade the refractive index profile of the interfaces in the photonic crystal rather than diffusely scatter the incoming light. This result also implies that the amount of incoherent reflection from the roughened quarterwave stacks is extremely small. This is confirmed through direct extraction of the amount of incoherent power from the FDTD calculations. Further FDTD studies are done on the entire normal incidence bandgap of roughened 1D photonic crystals. These results reveal a narrowing and red-shifting of the normal incidence bandgap with increasing RMS roughness. Again, the homogenization approximation is able to predict these results. The problem of surface scratches on 1D photonic crystals is also addressed. Although the reflectivity decreases are lower in this study, up to a 15% change in reflectivity is observed in certain scratched photonic crystal structures. However, this reflectivity change can be significantly decreased by adding a low index protective coating to the surface of the photonic crystal. Again, application of homogenization theory to these structures confirms its predictive power for this type of imperfection as well. Additionally, the problem of a circular pores in 2D photonic crystals is investigated, showing that almost a 50% change in reflectivity can occur for some structures. Furthermore, this study reveals trends that are consistent with the 1D simulations: parameter changes that increase the absolute reflectivity of the photonic crystal will also increase its tolerance to structural imperfections. Finally, experimental reflectance spectra from roughened 1D photonic crystals are compared to the results predicted computationally in this thesis. Both the computed and experimental spectra correlate favorably, validating the findings presented herein.