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photonic crystal waveguides

photonic crystal waveguides

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Photonic Crystal Waveguides | IntechOpen · In the microwave range, the photonic crystal can be realized both on waveguides with dielectric filling [8

photonic crystal waveguides

  • Photonic Crystal Waveguides | IntechOpen

    · In the microwave range, the photonic crystal can be realized both on waveguides with dielectric filling [8, 9] and on flat transmission lines with periodically changing stripe structure There are examples of the creation of photonic crystals in the optical, infrared, ultraviolet, microwave ranges Creating a photonic crystal for the microwave range is the simplest It should be noted that inPhotonic crystal waveguides operate on a different principle A linear defect is created in the crystal which supports a mode that is in the band gap This mode is forbidden from propagating in the bulk crystal because of the band gap (That is, waveguides operate in a manner similar to resonant cavities, except that they are line defects rather than point defects) Below, we see theWaveguide Bends in Photonic CrystalsPhotonic crystal waveguides thus nearly eliminate escape cone losses, and overcome the performance limitations of previously proposed wavelengthselective dielectric multilayer filters We describe designs for holearray and rodarray photonic crystals comprised of hydrogenated amorphous silicon carbide using CdSe/ CdS quantum dots Our analysis suggests that photonic crystal waveguidePhotonic Crystal Waveguides for >90% Light Trapping E

  • Design of Photonic Crystal Waveguides ScienceDirect

    · · The band gaps of the TElike mode of a polyimide photonic crystal, a silicon nitride photonic crystal, and a silicon photonic crystal shown in Fig 102 are from 0432 to 0502, 0301 to 0446, and 0246 to 0405 of normalized frequency, respectively We can see that the photonic crystal with a low dielectric constant has a smaller band gap (polyimide photonic crystal, ε r = 3 4,In conclusion we have proposed a novel type of 2D photonic crystal waveguides, comprising several rows of dielectric rods Nanopillars waveguide possesses the system of localized modes separated nearly equidistantly at the boundary of the Brilloun zone The factors playing the major influence upon modes dispersion have been analyzed In spite of a multimode nature of the waveguideNanopillars Photonic Crystal WaveguidesPhotonic crystal waveguides and fibers are emerging waveguides that are formed based on relatively largescale periodic dielectric materials, also known as the photonic bandgap materials Modeling and simulation of such waveguide structures will help to gain understanding for the modal and transmission characteristics and their dependence on the key design and operation parameters In thisModeling and Design of Photonic Crystal Waveguides and Fibers

  • Coupling light in photonic crystal waveguides: A review

    · In this paper, the techniques reported so far for coupling light in photonic crystal waveguides have been reviewed and analyzed so that a comprehensive guide for an efficient coupling to photonic crystal waveguides can be made possible Previous article in issue; Next article in issue; Keywords Photonic crystal waveguides Nanophotonic waveguides Onchip coupling OffchipMost photonic crystal waveguides and defect cavities demonstrated so far are obtained by removing one cylinder, or a row of cylinders from a periodic 2D crystal [18, 19] In the process of optimizing the properties of these waveguides and resonant cavities, it was found that sig(C) 2005 OSA 19 September 2005 / Vol 13, No 19 / OPTICS EXPRESS 7306 #8231 $1500 USD Received 31 July 2005Efficient design and optimization of photonic crystaltion of micrometer sized lasers [2], waveguides [3], and nanocavities [4] by confining the light on a wavelength scale Fast signals in optical structures have a broad spec trum and therefore sample the (material) dispersion over a wide range Photonic crystal (PhC) structures that allow the control and compensation of dispersion therefore become increasingly important [5,6] PhCsRealSpace Observation of Ultraslow Light in Photonic

  • Photonic Crystal Waveguides | IntechOpen

    · In the microwave range, the photonic crystal can be realized both on waveguides with dielectric filling [8, 9] and on flat transmission lines with periodically changing stripe structure There are examples of the creation of photonic crystals in the optical, infrared, ultraviolet, microwave ranges Creating a photonic crystalPhotonic crystal waveguides have not reliably demonstrated very high group indices (n g) (exceeding n g = 100) [11, 22, 23], with most work 1 Figure 1: (Colour online) a) Sketch of a kagome lattice of lowindex holes in a highindex background 1 indicates a sparse row, where every second lattice site is missing and 2 indicates a complete row, identical to that of a triangular lattice withPhotonic crystal slow light waveguides in a kagome latticeMost photonic crystal waveguides and defect cavities demonstrated so far are obtained by removing one cylinder, or a row of cylinders from a periodic 2D crystal [18, 19] In the process of optimizing the properties of these waveguides and resonant cavities, it was found that sig(C) 2005 OSA 19 September 2005 / Vol 13, No 19 / OPTICS EXPRESS 7306 #8231 $1500 USD Received 31 July 2005Efficient design and optimization of photonic crystal

  • Photonic crystal slotted slab waveguides ScienceDirect

    · Photonic crystal waveguides Integrated optics Slotted photonic crystal waveguides Air guiding 1 IntroductionSince the early days of integrated optics and optical communications, the advantages of confining and guiding light by total internal reflection (TIR) have been used to fabricate filters, switches and optical interconnection devices The emerging siliconbased technology called forPolymer Photonic Crystal Waveguides Generated by Femtosecond Laser Laser & Photonics Reviews ( IF 13138 ) Pub Date : , DOI: 101002/lpor GianLuca Roth, Stefan Kefer, Steffen Hessler, Cemal Esen, Ralf Hellmann Femtosecond laserbased fabrication of integrated photonic crystal waveguides inside of a transparent polymerPolymer Photonic Crystal Waveguides Generated byKeywords: Silicon; Photonic crystal; Waveguides 1 Introduction In the last decades strong effort has been carried out to investigate and control the optical properties of materials, to confine light in specified areas, to prohibit its propagation or to allow it to propagate only in certain directions and at certain frequencies The introduction of components based on total internalReview Siliconbased twodimensional photonic crystal

  • "Optical Power Splitting Techniques Using Photonic Crystal

    There are multiple ways by which equal amount of power of incoming signals can be divided into two, three and four output channels; for example using multiple coupled photonic crystal waveguides, directional coupling and cascaded multimode PC waveguides Ideally, the splitter should divide the input power equally into the output channels without significant reflection or radiation losses andtion of micrometer sized lasers [2], waveguides [3], and nanocavities [4] by confining the light on a wavelength scale Fast signals in optical structures have a broad spec trum and therefore sample the (material) dispersion over a wide range Photonic crystal (PhC) structures that allow the control and compensation of dispersion therefore become increasingly important [5,6] PhCsRealSpace Observation of Ultraslow Light in PhotonicEfficient Design for Integrated Photonic Waveguides with Agile Dispersion by Zhaonian Wang, Jiangbing Du *, Weihong Shen, Jiacheng Liu and Zuyuan He State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai , China * Author to whom correspondence should be addressed Academic Editor: Luis Velasco SensorsEfficient Design for Integrated Photonic Waveguides with

  • Optical spin sorting chain

    In contrast to photonic crystal waveguides, where the guiding direction is fixed to the crystal orientation, the truly 1D waveguide allows flexible bending in a continuous manner In Fig S8 (see Supplement 1), we provide the lightguiding over a sharp corner (∼ 60°) in the first and second bands The structural optimization would be the subject of future work, including the stability to 1019· In the microwave range, the photonic crystal can be realized both on waveguides with dielectric filling [8, 9] and on flat transmission lines with periodically changing stripe structure There are examples of the creation of photonic crystals in the optical, infrared, ultraviolet, microwave ranges Creating a photonic crystalPhotonic Crystal Waveguides | IntechOpen· Summary This chapter contains sections titled: Dispersion relation Photonic crystals Photonic crystal fabrication techniques Examples of photonic crystal applications PhotonicPhotonic Crystal Waveguides Photonic Waveguides Wiley

  • Waveguide Bends in Photonic Crystals

    Photonic crystal waveguides operate on a different principle A linear defect is created in the crystal which supports a mode that is in the band gap This mode is forbidden from propagating in the bulk crystal because of the band gap (That is, waveguides operate in a manner similar to resonant cavities, except that they are line defects rather than point defects) Below, we see thePhotonic crystal waveguides thus nearly eliminate escape cone losses, and overcome the performance limitations of previously proposed wavelengthselective dielectric multilayer filters We describe designs for holearray and rodarray photonic crystals comprised of hydrogenated amorphous silicon carbide using CdSe/ CdS quantum dots Our analysis suggests that photonic crystal waveguidePhotonic Crystal Waveguides for >90% Light Trapping E· · The band gaps of the TElike mode of a polyimide photonic crystal, a silicon nitride photonic crystal, and a silicon photonic crystal shown in Fig 102 are from 0432 to 0502, 0301 to 0446, and 0246 to 0405 of normalized frequency, respectively We can see that the photonic crystal with a low dielectric constant has a smaller band gap (polyimide photonic crystal, ε r = 3 4,Design of Photonic Crystal Waveguides ScienceDirect

  • Nanopillars Photonic Crystal Waveguides

    In conclusion we have proposed a novel type of 2D photonic crystal waveguides, comprising several rows of dielectric rods Nanopillars waveguide possesses the system of localized modes separated nearly equidistantly at the boundary of the Brilloun zone The factors playing the major influence upon modes dispersion have been analyzed In spite of a multimode nature of the waveguidePhotonic crystal waveguides and fibers are emerging waveguides that are formed based on relatively largescale periodic dielectric materials, also known as the photonic bandgap materials Modeling and simulation of such waveguide structures will help to gain understanding for the modal and transmission characteristics and their dependence on the key design and operation parameters In thisModeling and Design of Photonic Crystal Waveguides and FibersMost photonic crystal waveguides and defect cavities demonstrated so far are obtained by removing one cylinder, or a row of cylinders from a periodic 2D crystal [18, 19] In the process of optimizing the properties of these waveguides and resonant cavities, it was found that sig(C) 2005 OSA 19 September 2005 / Vol 13, No 19 / OPTICS EXPRESS 7306 #8231 $1500 USD Received 31 July 2005Efficient design and optimization of photonic crystal

  • Waveguide (optics) Wikipedia

    Segmented waveguides and photonic crystal waveguides Optical waveguides typically maintain a constant crosssection along their direction of propagation This is for example the case for strip and of rib waveguides However, waveguides can also have periodic changes in their crosssection while still allowing lossless transmission of light via socalled Bloch modes Such waveguides areIn contrast to photonic crystal waveguides, where the guiding direction is fixed to the crystal orientation, the truly 1D waveguide allows flexible bending in a continuous manner In Fig S8 (see Supplement 1), we provide the lightguiding over a sharp corner (∼ 60°) in the first and second bands The structural optimization would be the subject of future work, including the stability to 90Optical spin sorting chain