{"title":"Finite-difference time-domain modelling of photonic crystal structures","authors":"Mo B, Rent M De Ridder, Revco Stoffer","doi":"10.1109/ICTON.2001.934709","DOIUrl":"https://doi.org/10.1109/ICTON.2001.934709","url":null,"abstract":"The usual, highly efficient, modelling tools for planar optical devices are generally not suitable for modelling photonic crystal structures. For example, the beam propagation method fails when applied to these strongly scattering structures since presumptions are made on the propagation direction of the waves. The finite-difference time-domain method (FDTD), however, as a direct discretisation of Maxwell's equations, does not suffer from such restrictive assumptions. It is shown that the evolution of the electromagnetic field in both time and space-as calculated using FDTD-can be of considerable help in understanding the physics of photonic crystal structures.","PeriodicalId":301018,"journal":{"name":"Proceedings of 2001 3rd International Conference on Transparent Optical Networks (IEEE Cat. No.01EX488)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125100472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Deep level transient spectroscopy, photoreflection and time resolved photoluminescence spectra of self-assembled quantum dots","authors":"W. Bala","doi":"10.1109/ICTON.2001.934719","DOIUrl":"https://doi.org/10.1109/ICTON.2001.934719","url":null,"abstract":"Self-assembled quantum dots (QD) are attracting widespread interest due to the potential they offer in the device application such as low-threshold lasers, detectors and optical memory structures. We report on the electron-filling photoreflectance and photoluminescence investigation in the 1.5-3 eV photon energy range and at temperatures from 10 to 330 K on stacked layers of Si quantum dots. We observed clear and well-resolved structures, which we attribute to the optical response of different QD families. It is shown that Coulomb interaction can account for the observed optical response of QD families with different morphology coexisting in the semiconductor barrier.","PeriodicalId":301018,"journal":{"name":"Proceedings of 2001 3rd International Conference on Transparent Optical Networks (IEEE Cat. No.01EX488)","volume":"715 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116973503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Modelling radiation fields in periodic optoelectronic structures","authors":"P. Sewell, T. Benson, A. Vukovic","doi":"10.1109/ICTON.2001.934728","DOIUrl":"https://doi.org/10.1109/ICTON.2001.934728","url":null,"abstract":"The proper radiation mode spectrum of periodic waveguide structures is identified by means of a general approach. These modes are normalisable unlike leaky modes, and form part of the complete spectrum of the guide.","PeriodicalId":301018,"journal":{"name":"Proceedings of 2001 3rd International Conference on Transparent Optical Networks (IEEE Cat. No.01EX488)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116648275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Semiconductor optical amplifier performance investigation by computer modelling","authors":"H. Baghdasaryan, S.G. Dashyan","doi":"10.1109/ICTON.2001.934774","DOIUrl":"https://doi.org/10.1109/ICTON.2001.934774","url":null,"abstract":"An application of a semiconductor optical amplifier (SOA) is presented and a mathematical model is described. Investigations of the amplifying properties of the SOA by computer modeling are carried out.","PeriodicalId":301018,"journal":{"name":"Proceedings of 2001 3rd International Conference on Transparent Optical Networks (IEEE Cat. No.01EX488)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130272052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Add/drop in subcarrier multiplexed optical networks","authors":"E. Udvary","doi":"10.1109/ICTON.2001.934786","DOIUrl":"https://doi.org/10.1109/ICTON.2001.934786","url":null,"abstract":"The realisation of the add/drop functions in the subbcarrier multiplexed (SCM) optical networks is a relevant problem. Namely, the branching one channel (a microwave subcarrier with information) is difficult without attenuating the other channels. The application of semiconductor optical amplifiers (SOAs) means a smart answer for this question. An experimental and theoretical study is presented for the transmission and noise characteristics and application possibilities of SOAs.","PeriodicalId":301018,"journal":{"name":"Proceedings of 2001 3rd International Conference on Transparent Optical Networks (IEEE Cat. No.01EX488)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121580773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Slab-waveguide based 2D photonic-crystals for integrated optics","authors":"B. Jaskorzyńska, M. Swillo, M. Qiu","doi":"10.1109/ICTON.2001.934725","DOIUrl":"https://doi.org/10.1109/ICTON.2001.934725","url":null,"abstract":"We review advances in realizing waveguide devices in two-dimensional (2D) photonic crystals (PCs). In particular, the properties of transmission spectra and out-of-plane losses are addressed. We also present results on the characterization and modelling of waveguides obtained as line defects in periodic arrays of holes deeply etched through a InP/InPGaAsP heterostructure. The observed and modeled mode gaps in the transmission spectra are discussed.","PeriodicalId":301018,"journal":{"name":"Proceedings of 2001 3rd International Conference on Transparent Optical Networks (IEEE Cat. No.01EX488)","volume":"198 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124370350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Electromagnetic wave diffraction and propagation in a multilayer dielectric structure containing a diffraction grating","authors":"A. Lerer, G. Kalinchenko","doi":"10.1109/ICTON.2001.934732","DOIUrl":"https://doi.org/10.1109/ICTON.2001.934732","url":null,"abstract":"We develop a numerical code for simulating the EH/sub 01/ mode propagating in a structure composed of a dielectric grating placed on a multi-layer substrate. The dispersion characteristics, the spatial field distribution and the dependence of the transmission and reflection coefficients upon the frequency are calculated for different geometrical dimensions of the structure. The method of volume integral equations is applied. The analytical transformation of the integral equations makes it possible to avoid singularities and to reduce the problem of integrating to standard numerical quadratures. Due to good convergence of series and integrals it is enough to take 15-20 terms in the series and numerical quadratures to get an accuracy not worse than 0.1%. We find the frequency band where the structure can behave as a frequency-selective one. The geometrical grating parameters for the structure to be absolutely reflecting, or, alternatively, completely transparent, are found. The results of this work can form a basis for further investigations of hybrid wave propagation in complex dielectric structures.","PeriodicalId":301018,"journal":{"name":"Proceedings of 2001 3rd International Conference on Transparent Optical Networks (IEEE Cat. No.01EX488)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132997117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Optical switching in semiconductor photonic band gap structures","authors":"I. Nefedov, V.N. Gusyatnikov, Y. Morozov","doi":"10.1109/ICTON.2001.934769","DOIUrl":"https://doi.org/10.1109/ICTON.2001.934769","url":null,"abstract":"We study optical and electrooptical switching and modulation in one-dimensional semiconductor photonic band gap structures, provided by light-induced generation of non-equilibrium free charge carriers and excitons in a semiconductor.","PeriodicalId":301018,"journal":{"name":"Proceedings of 2001 3rd International Conference on Transparent Optical Networks (IEEE Cat. No.01EX488)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128794639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Holey fibers-application issues","authors":"K. Borzycki","doi":"10.1109/ICTON.2001.934727","DOIUrl":"https://doi.org/10.1109/ICTON.2001.934727","url":null,"abstract":"Holey fibers of \"photonic crystal\" or \"coaxial\" type have become a subject of active research. They promise to improve performance of transport networks, reducing nonlinear optical effects and extending usable frequency range (little or no glass in the core) and offering high bend resistance (strong guiding). Holey fibers with performance required in telecom networks have yet to be made, but their possible use deserves attention. The paper deals with issues related to the application of such fibers in telecommunication networks: cabling, splicing, hardware design, operating life etc. Considering cost issues, the most promising designs feature circular symmetry and single central cavity with dielectric mirror inside, because standard fiber drawing techniques may be adopted to make them. For the same reason use of silica-based materials is assumed.","PeriodicalId":301018,"journal":{"name":"Proceedings of 2001 3rd International Conference on Transparent Optical Networks (IEEE Cat. No.01EX488)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130874477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"New approaches to modeling the dynamics of misaligned beams in nonlinear gradient waveguides","authors":"A. I. Bychenkov, V. Derbov, V. V. Serov","doi":"10.1109/ICTON.2001.934788","DOIUrl":"https://doi.org/10.1109/ICTON.2001.934788","url":null,"abstract":"The propagation of a misaligned paraxial beam through a nonlinear waveguide medium can be presented as a nonlinear dynamical problem, where the longitudinal coordinate z plays the role of time, while the transverse pattern of the field is the dynamical system evolving with z. The reduction to a finite-dimensional system is possible within the framework of the approximate method using Gaussian probe functions whose parameters are determined by Galerkin's criterion in the basis of a small number of flexible Gaussian modes. This method is referred as the modified generalized method of moments (MGMM). Using the MGMM we studied the dynamics of an off-axis initially Gaussian beam propagating through a Kerr nonlinear parabolic waveguide and revealed stationary, periodic and quasiperiodic regimes, as well as nontrivial phenomena, such as phase locking, cycle generation, etc. In particular, the behavior of the beam variables in the vicinity of the stationary states was analyzed. However, direct numerical modeling shows significant non-Gaussian distortions of the beam caused by Kerr nonlinearity, so MGMM is expected to describe correctly the dynamics of the beam moments rather than the field transverse pattern itself. To check this idea alternative approaches are desirable. The method proposed here involves the exact numerical calculation of nonlinear modes followed by the linear analysis of small nonstationary perturbations of these modes based on Bogoliubov's equations.","PeriodicalId":301018,"journal":{"name":"Proceedings of 2001 3rd International Conference on Transparent Optical Networks (IEEE Cat. No.01EX488)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115570727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}