Pub Date : 2000-06-05DOI: 10.1109/ICTON.2000.874140
N. Khizhnyak, N. Yatsenko, E. Yatsenko
In the framework of a method of integral equations of macroscopic electromagnetics it is shown, that with any orientation of the wire the electromagnetic field in far zone represents two waves-ordinary and unordinary. In that specific case for wire located parallel to axis of anisotropy, the electromagnetic field is characterised only by an unordinary wave. With symmetric excitation of the wire the power pattern in a plane, perpendicular to axis of the wire, as well as in isotropic medium, represents a circle, which radius is defined by length of the wire and equivalent permittivity.
{"title":"The linear wire in anisotropic medium","authors":"N. Khizhnyak, N. Yatsenko, E. Yatsenko","doi":"10.1109/ICTON.2000.874140","DOIUrl":"https://doi.org/10.1109/ICTON.2000.874140","url":null,"abstract":"In the framework of a method of integral equations of macroscopic electromagnetics it is shown, that with any orientation of the wire the electromagnetic field in far zone represents two waves-ordinary and unordinary. In that specific case for wire located parallel to axis of anisotropy, the electromagnetic field is characterised only by an unordinary wave. With symmetric excitation of the wire the power pattern in a plane, perpendicular to axis of the wire, as well as in isotropic medium, represents a circle, which radius is defined by length of the wire and equivalent permittivity.","PeriodicalId":314041,"journal":{"name":"2000 2nd International Conference on Transparent Optical Networks. Conference Proceedings (Cat. No.00EX408)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132576668","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}
Pub Date : 2000-06-05DOI: 10.1109/ICTON.2000.874161
V. Lysak, I. Sukhoivanov
The influence of electron concentration on optical gain of semiconductor lasers is analysed. The comparison by integrated gain model and approached models for a range of active layer thickness change from 50 up to 1000 /spl Aring/ was carried out. The expression of the approximation model parameters change from the active layer thickness is determined.
{"title":"Simulation of an optical gain of quantum well lasers taking into account the optical gain and electron density nonlinearities","authors":"V. Lysak, I. Sukhoivanov","doi":"10.1109/ICTON.2000.874161","DOIUrl":"https://doi.org/10.1109/ICTON.2000.874161","url":null,"abstract":"The influence of electron concentration on optical gain of semiconductor lasers is analysed. The comparison by integrated gain model and approached models for a range of active layer thickness change from 50 up to 1000 /spl Aring/ was carried out. The expression of the approximation model parameters change from the active layer thickness is determined.","PeriodicalId":314041,"journal":{"name":"2000 2nd International Conference on Transparent Optical Networks. Conference Proceedings (Cat. No.00EX408)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114739924","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}
Pub Date : 2000-06-05DOI: 10.1109/ICTON.2000.874128
M. Jaworski, M. Marciniak
Analysis of long distance analog CATV link utilizing NZDS fiber is presented. In externally modulated lightwave AM-CATV link the main limiting factor is transmitting medium i.e. optical fiber. High dispersion of standard fiber limits CATV link span to below 100 km. Presented results of simulations confirmed that utilizing NZDS fiber can improve the span to more than 150 km.
{"title":"Long distance analog CATV link utilizing non-zero dispersion-shifted fiber","authors":"M. Jaworski, M. Marciniak","doi":"10.1109/ICTON.2000.874128","DOIUrl":"https://doi.org/10.1109/ICTON.2000.874128","url":null,"abstract":"Analysis of long distance analog CATV link utilizing NZDS fiber is presented. In externally modulated lightwave AM-CATV link the main limiting factor is transmitting medium i.e. optical fiber. High dispersion of standard fiber limits CATV link span to below 100 km. Presented results of simulations confirmed that utilizing NZDS fiber can improve the span to more than 150 km.","PeriodicalId":314041,"journal":{"name":"2000 2nd International Conference on Transparent Optical Networks. Conference Proceedings (Cat. No.00EX408)","volume":"80 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131122914","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}
Pub Date : 2000-06-05DOI: 10.1109/ICTON.2000.874134
J. Ciosmak, M. Marciniak
We present the impact of changes in core refraction modulation profile and index on the shape of fibre Bragg grating reflection coefficient. It is shown that there exists a shift of reflection coefficient characteristics towards longer wavelengths and an increase in amplitude and the grating effective length as well. Reflection coefficient shapes are plotted for the profile described by hyperbolic tangent function for the selected positive values of a parameter.
{"title":"Analysis of reflection coefficient dependence of fibre Bragg grating on index modulation profile","authors":"J. Ciosmak, M. Marciniak","doi":"10.1109/ICTON.2000.874134","DOIUrl":"https://doi.org/10.1109/ICTON.2000.874134","url":null,"abstract":"We present the impact of changes in core refraction modulation profile and index on the shape of fibre Bragg grating reflection coefficient. It is shown that there exists a shift of reflection coefficient characteristics towards longer wavelengths and an increase in amplitude and the grating effective length as well. Reflection coefficient shapes are plotted for the profile described by hyperbolic tangent function for the selected positive values of a parameter.","PeriodicalId":314041,"journal":{"name":"2000 2nd International Conference on Transparent Optical Networks. Conference Proceedings (Cat. No.00EX408)","volume":"397 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122089417","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}
Pub Date : 2000-06-05DOI: 10.1109/ICTON.2000.874132
D. Podwika, D. Stefanski, J. Witkowski, E. Pawlik
The practical realisation of passive fibre coupler network Ethernet 10 Mb/s is presented. The passive star coupler configuration has been particularly emphasised. The practical configurations of the Ethernet 1O Mb/s-computer network using special properties of passive star fibre couplers have been described. It allows using the ordinary transceivers with simple algorithm of collision detection.
{"title":"Computer networks based on optical passive couplers","authors":"D. Podwika, D. Stefanski, J. Witkowski, E. Pawlik","doi":"10.1109/ICTON.2000.874132","DOIUrl":"https://doi.org/10.1109/ICTON.2000.874132","url":null,"abstract":"The practical realisation of passive fibre coupler network Ethernet 10 Mb/s is presented. The passive star coupler configuration has been particularly emphasised. The practical configurations of the Ethernet 1O Mb/s-computer network using special properties of passive star fibre couplers have been described. It allows using the ordinary transceivers with simple algorithm of collision detection.","PeriodicalId":314041,"journal":{"name":"2000 2nd International Conference on Transparent Optical Networks. Conference Proceedings (Cat. No.00EX408)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125239816","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}
Pub Date : 2000-06-05DOI: 10.1109/ICTON.2000.874118
E. Bekker, L. Melnikov, E. Romanova
Influence of Kerr-like nonlinearity on the transmittance of a guiding structure consisting of double mode and single mode step-index fiber sections is estimated. The possibility to use such structure for pulse compression is analyzed and parameters of the structure that correspond to the largest effect of pulse compression are determined. Interaction of modes in double mode nonlinear fiber is investigated.
{"title":"Conversion of LP/sub 02/-mode into LP/sub 01/-mode in optical fibers with Kerr-like nonlinearity","authors":"E. Bekker, L. Melnikov, E. Romanova","doi":"10.1109/ICTON.2000.874118","DOIUrl":"https://doi.org/10.1109/ICTON.2000.874118","url":null,"abstract":"Influence of Kerr-like nonlinearity on the transmittance of a guiding structure consisting of double mode and single mode step-index fiber sections is estimated. The possibility to use such structure for pulse compression is analyzed and parameters of the structure that correspond to the largest effect of pulse compression are determined. Interaction of modes in double mode nonlinear fiber is investigated.","PeriodicalId":314041,"journal":{"name":"2000 2nd International Conference on Transparent Optical Networks. Conference Proceedings (Cat. No.00EX408)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129516920","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}
Pub Date : 2000-06-05DOI: 10.1109/ICTON.2000.874123
A. Lerer, G. Kalinchenko
The numerical code for the simulating of electric fields scattered on two-dimensional bodies of arbitrary shape and either law of nonlinearity is elaborated. In this paper we present results of calculations for cylinders of elliptical cross-section and quadratic nonlinearity law. Due to good convergence of series and integrals it is enough to sum 20-30 terms in series and numerical quadrature to get a deviation up to 0.1%. In this paper we have simulated the power transmitting coefficients for diffraction on: 1) grating made of dielectric rods; 2) dielectric rod set inside of a planar metallic waveguide; 3) dielectric rod situated next to a dielectric planar waveguide layer.
{"title":"The application of integral equations to calculation of diffraction on inhomogeneities in lightguide structures","authors":"A. Lerer, G. Kalinchenko","doi":"10.1109/ICTON.2000.874123","DOIUrl":"https://doi.org/10.1109/ICTON.2000.874123","url":null,"abstract":"The numerical code for the simulating of electric fields scattered on two-dimensional bodies of arbitrary shape and either law of nonlinearity is elaborated. In this paper we present results of calculations for cylinders of elliptical cross-section and quadratic nonlinearity law. Due to good convergence of series and integrals it is enough to sum 20-30 terms in series and numerical quadrature to get a deviation up to 0.1%. In this paper we have simulated the power transmitting coefficients for diffraction on: 1) grating made of dielectric rods; 2) dielectric rod set inside of a planar metallic waveguide; 3) dielectric rod situated next to a dielectric planar waveguide layer.","PeriodicalId":314041,"journal":{"name":"2000 2nd International Conference on Transparent Optical Networks. Conference Proceedings (Cat. No.00EX408)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128590056","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}
Pub Date : 2000-06-05DOI: 10.1109/ICTON.2000.874114
E. Romanova, P. Sewell, T. Benson
All dielectric fibers with a uniform core and multi-layered cladding have been analyzed using modal analysis and beam propagation methods. It has been shown that multi-layered fibers can provide an alternative to photonic crystal fibers for large-core amplifiers and the active elements of fiber lasers.
{"title":"Wave propagation through all-dielectric multilayered optical fiber","authors":"E. Romanova, P. Sewell, T. Benson","doi":"10.1109/ICTON.2000.874114","DOIUrl":"https://doi.org/10.1109/ICTON.2000.874114","url":null,"abstract":"All dielectric fibers with a uniform core and multi-layered cladding have been analyzed using modal analysis and beam propagation methods. It has been shown that multi-layered fibers can provide an alternative to photonic crystal fibers for large-core amplifiers and the active elements of fiber lasers.","PeriodicalId":314041,"journal":{"name":"2000 2nd International Conference on Transparent Optical Networks. Conference Proceedings (Cat. No.00EX408)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131154025","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}
Pub Date : 2000-06-05DOI: 10.1109/ICTON.2000.875174
W. Krolikowski
Spatial solitons represent an optical beam propagating in a nonlinear medium without changing its shape. Typically spatial solitons are created by self-trapping of the coherent optical beams, i.e. beams whose phase at any two points is fully correlated. Such beams differ significantly from those generated by an incoherent light source in which there is no correlation between light emitted from two different points. In effect, the phase across beam exhibits some level of randomness (partial correlation). A partially coherent beam spreads faster than the coherent beam of the same diameter. Additionally the intensity distribution of the partially coherent beam assumes time varying speckle structures making impossible self-focusing in typical instantaneous media. It has been shown recently, that the self-focusing of the partially coherent beam is still possible provided the nonlinear medium is inertial and responds on the time scale much longer than that of the fast phase variations.
{"title":"Incoherent spatial solitons in inertial nonlinear media","authors":"W. Krolikowski","doi":"10.1109/ICTON.2000.875174","DOIUrl":"https://doi.org/10.1109/ICTON.2000.875174","url":null,"abstract":"Spatial solitons represent an optical beam propagating in a nonlinear medium without changing its shape. Typically spatial solitons are created by self-trapping of the coherent optical beams, i.e. beams whose phase at any two points is fully correlated. Such beams differ significantly from those generated by an incoherent light source in which there is no correlation between light emitted from two different points. In effect, the phase across beam exhibits some level of randomness (partial correlation). A partially coherent beam spreads faster than the coherent beam of the same diameter. Additionally the intensity distribution of the partially coherent beam assumes time varying speckle structures making impossible self-focusing in typical instantaneous media. It has been shown recently, that the self-focusing of the partially coherent beam is still possible provided the nonlinear medium is inertial and responds on the time scale much longer than that of the fast phase variations.","PeriodicalId":314041,"journal":{"name":"2000 2nd International Conference on Transparent Optical Networks. Conference Proceedings (Cat. No.00EX408)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131260365","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}
Pub Date : 2000-06-05DOI: 10.1109/ICTON.2000.874122
B. Derkowska, B. Sahraoui, X. N. Phu, G. Glowacki, W. Bala
The two photon absorption coefficient (/spl beta/) and third order nonlinear optical susceptibility (/spl chi//sup <3>/) of ZnSe:Ag crystals were investigated using the nonlinear transmission and DFWM methods. The experimental results show that the real and imaginary part of third order nonlinear optical susceptibility (/spl chi//sup <3>/) decrease with increase of Ag content.
{"title":"Experimental study of the third order optical nonlinearities in ZnSe:Ag crystals","authors":"B. Derkowska, B. Sahraoui, X. N. Phu, G. Glowacki, W. Bala","doi":"10.1109/ICTON.2000.874122","DOIUrl":"https://doi.org/10.1109/ICTON.2000.874122","url":null,"abstract":"The two photon absorption coefficient (/spl beta/) and third order nonlinear optical susceptibility (/spl chi//sup <3>/) of ZnSe:Ag crystals were investigated using the nonlinear transmission and DFWM methods. The experimental results show that the real and imaginary part of third order nonlinear optical susceptibility (/spl chi//sup <3>/) decrease with increase of Ag content.","PeriodicalId":314041,"journal":{"name":"2000 2nd International Conference on Transparent Optical Networks. Conference Proceedings (Cat. No.00EX408)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129949272","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}
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