摘要:

An introduction of photonic band-gap structures is presented discussing the general properties of infinite 1-D systems. Finite systems are then considered together with their linear and nonlinear optical properties. ©2001 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1372714

出版商:AIP    

年代:1901

数据来源: AIP

摘要:

©2001 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1372715

出版商:AIP    

年代:1901

数据来源: AIP

摘要:

Within the past several years “photonic crystals” have emerged as a new class of materials providing new possibilities for the control and manipulation of light. These materials are viewed ideally as a composite of a periodic array of macroscopic dielectric or metallic scatterers in a homogeneous dielectric matrix. A photonic crystal affects the properties of a photon in much the same way that a semiconductor affects the properties of an electron. Consequently, photons in photonic crystals can have band structures, localized defect modes, surface modes, etc. This new ability to mold and guide light leads naturally to many novel phenomena associated with light. ©2001 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1372716

出版商:AIP    

年代:1901

数据来源: AIP

摘要:

The all-optical network should take advantage of photonic devices of various kind that above all should provide the means for all-optical signal processing. Photonic band-gap structures (PBG, photonic crystals) are expected to be very helpful for achievement of several functions that an all-optical network asks for. To this purpose many proposals have been elaborated and an intense research is still underway. In the lecture the state-of-art and potential future applications of PBG structures in optical telecommunication systems are reviewed. Special attention is paid to fiber Bragg Gratings that are special kind of photonic band-gap structures. In wavelength-division-multiplexed systems the wavelength sensitivity of PBGs and their filtering properties resulting from it are of particular interest. Possible locations of PBG-based devices within the advanced all-optical network architecture are indicated and their functional parameters are discussed. ©2001 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1372717

出版商:AIP    

年代:1901

数据来源: AIP

摘要:

Planar photonic crystals provide a promising platform for future miniaturized integrated optical circuits. Important concepts and design rules for waveguides, dispersive and cavity-based building blocks are discussed in order to provide a critical assessment of whether this promise is justified. ©2001 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1372718

出版商:AIP    

年代:1901

数据来源: AIP

摘要:

Several illustrations are given of the applicability of the Finite-Difference Time-Domain (FDTD) method to photonic crystal structures. An intuitive method for calculating the band gap of a two-dimensional photonic crystal is demonstrated. For waveguides in such a crystal, the dispersion and the coupling efficiency to a conventional dielectric waveguide are determined. The time-evolution of the field distribution in systems consisting of a cavity coupled to a crystal waveguide, as well as the transfer function of such a system are calculated. Diffraction losses, which can severely affect quasi two-dimensional photonic crystal structures, are modeled using a quasi one-dimensional structure, a dielectric slab waveguide in which a deep grating (a quasi-one-dimensional photonic crystal) of finite length has been etched. After calculating the reflection and transmission spectra, the diffraction loss spectrum is easily determined. The simultaneous availability of both the electromagnetic field distribution throughout the structure and the spectra makes it possible to identify these losses as a function of wavelength. Although the FDTD puts strong demands on computer resources which now limit its use on personal computers to two-dimensional and rather small three-dimensional applications, we believe that the continuing increase in computer performance will soon make the method workable for 3D-calculations on structures of practical interest, using low-cost computers. ©2001 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1372719

出版商:AIP    

年代:1901

数据来源: AIP

摘要:

We present results of guiding light in a single-line-defect planar photonic crystal (PPC) waveguide with 90° and 60° bends. The wave guiding is obtained by total internal reflection perpendicular to the plane of propagation and by the photonic band gap for the 2D photonic crystal in the plane. The results for photonic waveguiding are shown and demonstrated at 1.5 &mgr;m wavelength. ©2001 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1372720

出版商:AIP    

年代:1901

数据来源: AIP

摘要:

We have proposed a new technology for fabricating photonic crystals called “autocloning,” which is based on a bias-sputtering process. Utilizing the technology, we can fabricate submicron multi-dimensional structures easily. The process is simple and flexible, and we aim to industrialize photonic crystals with autocloning. In this paper, we introduce our technology and its applications to optical devices. ©2001 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1372721

出版商:AIP    

年代:1901

数据来源: AIP

摘要:

The novel optical properties of holey optical fibres are reviewed, and a complete hybrid vector model for these structures is described. ©2001 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1372722

出版商:AIP    

年代:1901

数据来源: AIP

摘要:

We present a survey of the nonlinear optical properties of mesoscopic and composite materials with particular emphasis on the photoinduced modifications of their spectral features that are related either to the electron or photon confinement. The impact of static magnetic fields is also analyzed. These modifications reveal important aspects of the electrons spins and photons in confined spaces and can be exploited in different ways for optoelectronic and physicochemical applications as well. ©2001 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1372723

出版商:AIP    

年代:1901

数据来源: AIP