Pub Date : 2000-06-05DOI: 10.1109/ICTON.2000.874108
B. Jaskorzyńska, M. Swillo, S. Sergeyev
Parasitic energy transfer between excited ions has been widely recognized as gain limiting factor in high-concentration Er-doped fibre amplifiers. The energy transfer leads to upconversion of the excitation which for randomly distributed (not clustered) ions is called homogeneous upconversion (HUG). For optimizing design of rare-earth doped devices it is important to properly model HUC.
{"title":"Homogeneous upconversion in Er-doped waveguides","authors":"B. Jaskorzyńska, M. Swillo, S. Sergeyev","doi":"10.1109/ICTON.2000.874108","DOIUrl":"https://doi.org/10.1109/ICTON.2000.874108","url":null,"abstract":"Parasitic energy transfer between excited ions has been widely recognized as gain limiting factor in high-concentration Er-doped fibre amplifiers. The energy transfer leads to upconversion of the excitation which for randomly distributed (not clustered) ions is called homogeneous upconversion (HUG). For optimizing design of rare-earth doped devices it is important to properly model HUC.","PeriodicalId":314041,"journal":{"name":"2000 2nd International Conference on Transparent Optical Networks. Conference Proceedings (Cat. No.00EX408)","volume":"11 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":"127186600","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.2000.874143
P. Chmela, O. Samek, M. Minarcik
The theoretically predicted self-organized parametric down conversion in optical fibers was experimentally demonstrated for the first time and a permanent /spl chi//sup (2)/ grating in the conditioned optical fiber was identified.
{"title":"/spl chi//sup (2)/ grating formation in optical fibers due to the self-organized parametric down conversion","authors":"P. Chmela, O. Samek, M. Minarcik","doi":"10.1109/ICTON.2000.874143","DOIUrl":"https://doi.org/10.1109/ICTON.2000.874143","url":null,"abstract":"The theoretically predicted self-organized parametric down conversion in optical fibers was experimentally demonstrated for the first time and a permanent /spl chi//sup (2)/ grating in the conditioned optical fiber was identified.","PeriodicalId":314041,"journal":{"name":"2000 2nd International Conference on Transparent Optical Networks. Conference Proceedings (Cat. No.00EX408)","volume":"2 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":"126962092","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.2000.874158
P. Ivanov, I. Sukhoivanov
An extended rate equation model with the consideration of non-uniform carrier distribution and temperature effects in the vertical cavity surface emitting lasers is developed. The carrier distribution characteristics and temperature field in the contact and active layer regions are obtained.
{"title":"Calculation of temperature characteristics in the oxide confined VCSEL including non-uniform carrier distribution","authors":"P. Ivanov, I. Sukhoivanov","doi":"10.1109/ICTON.2000.874158","DOIUrl":"https://doi.org/10.1109/ICTON.2000.874158","url":null,"abstract":"An extended rate equation model with the consideration of non-uniform carrier distribution and temperature effects in the vertical cavity surface emitting lasers is developed. The carrier distribution characteristics and temperature field in the contact and active layer regions are obtained.","PeriodicalId":314041,"journal":{"name":"2000 2nd International Conference on Transparent Optical Networks. Conference Proceedings (Cat. No.00EX408)","volume":"31 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":"121225155","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.2000.874101
Y. Sasaki
Recent progress in research on optical fiber devices, especially optical fiber couplers and optical fiber grating couplers are reviewed. Add-drop multiplexer operation by optical fiber grating couplers has recently attracted attention, because of its inherent low-insertion loss, simple implementation, and potential low-cost.
{"title":"Optical fiber devices","authors":"Y. Sasaki","doi":"10.1109/ICTON.2000.874101","DOIUrl":"https://doi.org/10.1109/ICTON.2000.874101","url":null,"abstract":"Recent progress in research on optical fiber devices, especially optical fiber couplers and optical fiber grating couplers are reviewed. Add-drop multiplexer operation by optical fiber grating couplers has recently attracted attention, because of its inherent low-insertion loss, simple implementation, and potential low-cost.","PeriodicalId":314041,"journal":{"name":"2000 2nd International Conference on Transparent Optical Networks. Conference Proceedings (Cat. No.00EX408)","volume":"112 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":"122582520","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.2000.874120
W. Bala
Epitaxial films of Zn1-xMgxSe have been grown with thicknesses up to 2 micrometers on GaAs [100] oriented substrates at different temperatures by MBE method. The growth of a range of epitaxial zinc sulphoselenide alloys and the growth of zinc selenide on [111] zinc telluride crystals are also reported and the significance of such films for applications in integrated optics is discussed. The refractive indices are determined experimentally by photoreflectance spectroscopy and prism-coupler method as a function of their composition. The refractive index of thin film zinc selenide alloys, determined from the measured effective indices of guided modes excited by a prism coupler, is shown to be reproducible and close to values measured for bulk material.
{"title":"Characterization of II-VI alloy semiconductor layers by photoreflectance spectroscopy and prism-coupler method","authors":"W. Bala","doi":"10.1109/ICTON.2000.874120","DOIUrl":"https://doi.org/10.1109/ICTON.2000.874120","url":null,"abstract":"Epitaxial films of Zn1-xMgxSe have been grown with thicknesses up to 2 micrometers on GaAs [100] oriented substrates at different temperatures by MBE method. The growth of a range of epitaxial zinc sulphoselenide alloys and the growth of zinc selenide on [111] zinc telluride crystals are also reported and the significance of such films for applications in integrated optics is discussed. The refractive indices are determined experimentally by photoreflectance spectroscopy and prism-coupler method as a function of their composition. The refractive index of thin film zinc selenide alloys, determined from the measured effective indices of guided modes excited by a prism coupler, is shown to be reproducible and close to values measured for bulk material.","PeriodicalId":314041,"journal":{"name":"2000 2nd International Conference on Transparent Optical Networks. Conference Proceedings (Cat. No.00EX408)","volume":"33 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":"114198713","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.2000.874150
Claudio Vinegoni, M. Wegmuller, N. Gisin
We present an elegant passive stabilization method for ultrafast devices employing nonlinear polarization rotation (NPR) in optical fibers. The fluctuations in the linear birefringence, including temperature and pressure induced ones, that affect the measurement of the NPR are successfully removed in a passive way by using a double pass of the fiber under test with a Faraday mirror at the end of the fiber. This method provides excellent switching stability over long term period when applied to a wavelength converter.
{"title":"Implementation of a Faraday mirror stabilization scheme for all optical switching in a standard telecom fiber","authors":"Claudio Vinegoni, M. Wegmuller, N. Gisin","doi":"10.1109/ICTON.2000.874150","DOIUrl":"https://doi.org/10.1109/ICTON.2000.874150","url":null,"abstract":"We present an elegant passive stabilization method for ultrafast devices employing nonlinear polarization rotation (NPR) in optical fibers. The fluctuations in the linear birefringence, including temperature and pressure induced ones, that affect the measurement of the NPR are successfully removed in a passive way by using a double pass of the fiber under test with a Faraday mirror at the end of the fiber. This method provides excellent switching stability over long term period when applied to a wavelength converter.","PeriodicalId":314041,"journal":{"name":"2000 2nd International Conference on Transparent Optical Networks. Conference Proceedings (Cat. No.00EX408)","volume":"9 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":"125142100","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.2000.874112
A. Nerukh, I. Scherbatko, M. Marciniak
The description and understanding of the propagating of THz pulses in optical systems has recently attracted considerable research efforts. Common methods to generate sub-picosecond, single-cycle electromagnetic pulses evoke great interest and there is an excitation of a biased semiconductor or an electro-optic crystal with a femtosecond light pulse among them. It needs a detailed investigation of the propagation properties of ultrashort pulse beams scattered by interfaces with time-varying properties. In this paper we obtain integral operators that describe in time domain in the 3-D case an interaction of complex electromagnetic signals with the flat interface between dielectric media when the medium in one of the two halfspaces changes its permittivity and acquires a conductivity.
{"title":"Reflection and transmission of a light on a dielectric boundary in a time domain","authors":"A. Nerukh, I. Scherbatko, M. Marciniak","doi":"10.1109/ICTON.2000.874112","DOIUrl":"https://doi.org/10.1109/ICTON.2000.874112","url":null,"abstract":"The description and understanding of the propagating of THz pulses in optical systems has recently attracted considerable research efforts. Common methods to generate sub-picosecond, single-cycle electromagnetic pulses evoke great interest and there is an excitation of a biased semiconductor or an electro-optic crystal with a femtosecond light pulse among them. It needs a detailed investigation of the propagation properties of ultrashort pulse beams scattered by interfaces with time-varying properties. In this paper we obtain integral operators that describe in time domain in the 3-D case an interaction of complex electromagnetic signals with the flat interface between dielectric media when the medium in one of the two halfspaces changes its permittivity and acquires a conductivity.","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":"129815640","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.2000.874109
S. Sujecki, T. Benson, P. Sewell, A. Majewski
The beam propagation method implemented in a tapered co-ordinate system is used to analyse a nonlinear taper structure. The results obtained are compared with the ones computed using the standard beam propagation algorithm in the rectangular co-ordinate system. In all analysed cases the novel approach: the tapered beam propagation method, allows calculation of the field distribution and the field overlap at the end of the structure faster and using less computer memory.
{"title":"Beam propagation analysis of non-linear tapers","authors":"S. Sujecki, T. Benson, P. Sewell, A. Majewski","doi":"10.1109/ICTON.2000.874109","DOIUrl":"https://doi.org/10.1109/ICTON.2000.874109","url":null,"abstract":"The beam propagation method implemented in a tapered co-ordinate system is used to analyse a nonlinear taper structure. The results obtained are compared with the ones computed using the standard beam propagation algorithm in the rectangular co-ordinate system. In all analysed cases the novel approach: the tapered beam propagation method, allows calculation of the field distribution and the field overlap at the end of the structure faster and using less computer memory.","PeriodicalId":314041,"journal":{"name":"2000 2nd International Conference on Transparent Optical Networks. Conference Proceedings (Cat. No.00EX408)","volume":"59 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":"121207081","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.2000.874130
V. Katok, M. Kotenko, O. Ometsinska
We suggest ways of raising the effectiveness and of evaluating the exactitude of the method of stratification for the analysis of inhomogeneous dielectric waveguides. We will use the example of the symmetrical planar waveguide with dielectric boundaries. It is necessary to mention that the suggested method is valid both for the asymmetric planar optical waveguides, including those with reflecting metal boundaries, and for the optical fibers with diverse cross-sections.
{"title":"Ways of raising the effectiveness and evaluating the exactitude of the stratification method of analysis of inhomogeneous dielectric waveguides","authors":"V. Katok, M. Kotenko, O. Ometsinska","doi":"10.1109/ICTON.2000.874130","DOIUrl":"https://doi.org/10.1109/ICTON.2000.874130","url":null,"abstract":"We suggest ways of raising the effectiveness and of evaluating the exactitude of the method of stratification for the analysis of inhomogeneous dielectric waveguides. We will use the example of the symmetrical planar waveguide with dielectric boundaries. It is necessary to mention that the suggested method is valid both for the asymmetric planar optical waveguides, including those with reflecting metal boundaries, and for the optical fibers with diverse cross-sections.","PeriodicalId":314041,"journal":{"name":"2000 2nd International Conference on Transparent Optical Networks. Conference Proceedings (Cat. No.00EX408)","volume":"20 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":"132619376","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.2000.874110
Dmitrii Ushakov, V. Kononenko, I. Manak
It is theoretically shown that in two-section laser structures based on /spl delta/-doped superlattices a broadened spectral tuning is realised under special requirements for the parameters and excitation conditions in the gain and absorbing sections. The tuning occurs in the stationary operation, during transient process, and regular pulsation regime as well. In the GaAs /spl delta/-doped superlattice lasers, the tuning range covers of up to 60 nm in near infra-red.
{"title":"Regular oscillation in two-section laser structures based on /spl delta/-doped superlattices","authors":"Dmitrii Ushakov, V. Kononenko, I. Manak","doi":"10.1109/ICTON.2000.874110","DOIUrl":"https://doi.org/10.1109/ICTON.2000.874110","url":null,"abstract":"It is theoretically shown that in two-section laser structures based on /spl delta/-doped superlattices a broadened spectral tuning is realised under special requirements for the parameters and excitation conditions in the gain and absorbing sections. The tuning occurs in the stationary operation, during transient process, and regular pulsation regime as well. In the GaAs /spl delta/-doped superlattice lasers, the tuning range covers of up to 60 nm in near infra-red.","PeriodicalId":314041,"journal":{"name":"2000 2nd International Conference on Transparent Optical Networks. Conference Proceedings (Cat. No.00EX408)","volume":"21 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":"116941685","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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