Pub Date : 2008-06-22DOI: 10.1109/ICTON.2008.4598696
M. Lanata, M. Fere, D. Piccinin, S. Pietralunga, M. Martinelli
Tellurium oxide is a promising optical material, conjugating transparency in the infrared with high refractive index, low chromatic dispersion with strong nonlinear response, elevated acousto-optic figure of merit and rare earth doping capability. Reactive sputtering is a suitable technique to obtain thin films of pure TeO2 glass, with tunable stoichiometry, without the need for added components to help vitrification. We report on the growth of tellurite thin films, on the linear and non-linear optical characterization and on the process technology to implement high-contrast planar optics.
{"title":"Sputtered tellurite glass thin films for planar optical devices","authors":"M. Lanata, M. Fere, D. Piccinin, S. Pietralunga, M. Martinelli","doi":"10.1109/ICTON.2008.4598696","DOIUrl":"https://doi.org/10.1109/ICTON.2008.4598696","url":null,"abstract":"Tellurium oxide is a promising optical material, conjugating transparency in the infrared with high refractive index, low chromatic dispersion with strong nonlinear response, elevated acousto-optic figure of merit and rare earth doping capability. Reactive sputtering is a suitable technique to obtain thin films of pure TeO2 glass, with tunable stoichiometry, without the need for added components to help vitrification. We report on the growth of tellurite thin films, on the linear and non-linear optical characterization and on the process technology to implement high-contrast planar optics.","PeriodicalId":230802,"journal":{"name":"2008 10th Anniversary International Conference on Transparent Optical Networks","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128734818","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 : 2008-06-22DOI: 10.1109/ICTON.2008.4598776
R. Dubertrand, M. Lebental, N. Djellali, J. Zyss, C. Schmit, E. Bogomolny
There is currently a great deal of interest in flat dielectric micro-cavities due to their numerous practical applications and their ability to address fundamental physics issues. But apart from circular cavity, exact expressions of wave-functions and spectrum are still unknown for all other cavity shapes. The difficulty originates from two separated factors: non-linearities induced by the boundary shape and diffraction at the corners. Here we propose an analytical perturbation method for nearly circular cavities and give general formulae up to the second order in the perturbation parameter for the wave-functions, the spectrum, and the far-field pattern. This approach is confirmed with the example of the cut-disk (a chaotic cavity shape with corners) by numerical simulations based on the Boundary Element Method and experiments with organic micro-lasers. This analytical method can be extended to a broad diversity of cavity shapes. We discuss its range of validity in length scale and the limit of the effective refractive index approximation which underlies the two-dimensional approximation.
{"title":"Perturbation study of resonances for nearly circular micro-cavities","authors":"R. Dubertrand, M. Lebental, N. Djellali, J. Zyss, C. Schmit, E. Bogomolny","doi":"10.1109/ICTON.2008.4598776","DOIUrl":"https://doi.org/10.1109/ICTON.2008.4598776","url":null,"abstract":"There is currently a great deal of interest in flat dielectric micro-cavities due to their numerous practical applications and their ability to address fundamental physics issues. But apart from circular cavity, exact expressions of wave-functions and spectrum are still unknown for all other cavity shapes. The difficulty originates from two separated factors: non-linearities induced by the boundary shape and diffraction at the corners. Here we propose an analytical perturbation method for nearly circular cavities and give general formulae up to the second order in the perturbation parameter for the wave-functions, the spectrum, and the far-field pattern. This approach is confirmed with the example of the cut-disk (a chaotic cavity shape with corners) by numerical simulations based on the Boundary Element Method and experiments with organic micro-lasers. This analytical method can be extended to a broad diversity of cavity shapes. We discuss its range of validity in length scale and the limit of the effective refractive index approximation which underlies the two-dimensional approximation.","PeriodicalId":230802,"journal":{"name":"2008 10th Anniversary International Conference on Transparent Optical Networks","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124624761","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 : 2008-06-22DOI: 10.1109/ICTON.2008.4598656
M. Khair, B. Kantarci, Jun Zheng, H. Mouftah
The limited perimeter vector matching (LVM) protocol is a novel fault localization protocol for localizing single-link failures in all-optical networks. In this paper, we study the optimization problem to minimize fault localization time when applying the LVM protocol to static all-optical networks, where traffic demands (or lightpath requests) are known a priori. Given the traffic demands, the optimization problem is to find a traffic distribution so that the time for localizing a failed link can be minimized. We formulate the problem into an integer linear programming problem and use CPLEX to solve the problem. We show through numerical results that by optimizing the traffic distribution the fault localization time can be effectively minimized and is below the OSPF localization time (40 msec) in traditional IP networks.
{"title":"Optimization for minimizing fault localization time in all-optical networks","authors":"M. Khair, B. Kantarci, Jun Zheng, H. Mouftah","doi":"10.1109/ICTON.2008.4598656","DOIUrl":"https://doi.org/10.1109/ICTON.2008.4598656","url":null,"abstract":"The limited perimeter vector matching (LVM) protocol is a novel fault localization protocol for localizing single-link failures in all-optical networks. In this paper, we study the optimization problem to minimize fault localization time when applying the LVM protocol to static all-optical networks, where traffic demands (or lightpath requests) are known a priori. Given the traffic demands, the optimization problem is to find a traffic distribution so that the time for localizing a failed link can be minimized. We formulate the problem into an integer linear programming problem and use CPLEX to solve the problem. We show through numerical results that by optimizing the traffic distribution the fault localization time can be effectively minimized and is below the OSPF localization time (40 msec) in traditional IP networks.","PeriodicalId":230802,"journal":{"name":"2008 10th Anniversary International Conference on Transparent Optical Networks","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126324385","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 : 2008-06-22DOI: 10.1109/ICTON.2008.4598746
L. Stampoulidis, E. Kehayas, P. Bakopoulos, Panagiotis Zakynthinos, D. Petrantonakis, D. Apostolopoulos, O. Zouraraki, H. Avramopoulos
We present recent advances in functional photonic integration and its application for the realization of photonic Tb/s routing. Specifically, we report on the transition from single element to multi-element photonic devices with the fabrication of the first hybrid integrated arrays of optical switches using the silica on-silicon hybrid photonic integration technique. We demonstrate how the enhanced processing power of these components can be exploited to implement key functionalities required in next generation, fully integrated, Tb/s photonic routers.
{"title":"Enabling Tb/s photonic routing: Development of advanced hybrid integrated photonic devices to realize high-speed, all-optical networking","authors":"L. Stampoulidis, E. Kehayas, P. Bakopoulos, Panagiotis Zakynthinos, D. Petrantonakis, D. Apostolopoulos, O. Zouraraki, H. Avramopoulos","doi":"10.1109/ICTON.2008.4598746","DOIUrl":"https://doi.org/10.1109/ICTON.2008.4598746","url":null,"abstract":"We present recent advances in functional photonic integration and its application for the realization of photonic Tb/s routing. Specifically, we report on the transition from single element to multi-element photonic devices with the fabrication of the first hybrid integrated arrays of optical switches using the silica on-silicon hybrid photonic integration technique. We demonstrate how the enhanced processing power of these components can be exploited to implement key functionalities required in next generation, fully integrated, Tb/s photonic routers.","PeriodicalId":230802,"journal":{"name":"2008 10th Anniversary International Conference on Transparent Optical Networks","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127344067","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 : 2008-06-22DOI: 10.1109/ICTON.2008.4598406
K. Moutzouris, F. Adler, A. Sell, A. Leitenstorfer
In this paper, we review various nonlinear wavelength conversion experiments based upon a femtosecond erbium-fiber source operating at the telecommunication wavelength of 1.55 mum. By use of harmonic and sum frequency generation a nearly continuous ultra-wide band coverage from the ultraviolet through the entire visible to the near-infrared is achieved. The up-converted radiation appears in the form of ultra-short pulses with a repetition rate of approximately 100 MHz and average power levels ranging from few to more than 100 mW. In addition, we report on a concept for broadband-to-narrowband frequency doubling. Under this novel, highly efficient scheme, the harmonic component is subjected to simultaneous spectral filtering and brightness enhancement. Such performance characteristics may be of great interest to numerous applications, including high-capacity data storage, frequency-comb generation, bioimaging and spectroscopy.
{"title":"Ultra-wide band wavelength converters","authors":"K. Moutzouris, F. Adler, A. Sell, A. Leitenstorfer","doi":"10.1109/ICTON.2008.4598406","DOIUrl":"https://doi.org/10.1109/ICTON.2008.4598406","url":null,"abstract":"In this paper, we review various nonlinear wavelength conversion experiments based upon a femtosecond erbium-fiber source operating at the telecommunication wavelength of 1.55 mum. By use of harmonic and sum frequency generation a nearly continuous ultra-wide band coverage from the ultraviolet through the entire visible to the near-infrared is achieved. The up-converted radiation appears in the form of ultra-short pulses with a repetition rate of approximately 100 MHz and average power levels ranging from few to more than 100 mW. In addition, we report on a concept for broadband-to-narrowband frequency doubling. Under this novel, highly efficient scheme, the harmonic component is subjected to simultaneous spectral filtering and brightness enhancement. Such performance characteristics may be of great interest to numerous applications, including high-capacity data storage, frequency-comb generation, bioimaging and spectroscopy.","PeriodicalId":230802,"journal":{"name":"2008 10th Anniversary International Conference on Transparent Optical Networks","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127688697","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}
Recent progress of optical code processing technology is explained. Ultra-high speed time domain, spectral domain, hybrid domain, and multiple optical code processing devices and systems are shown. As application of these technologies, OCDMA-PON, OPS network, and terahertz optical clock generation are demonstrated.
{"title":"Optical code processing system, device, and its application","authors":"N. Wada","doi":"10.4304/jnw.5.2.242-250","DOIUrl":"https://doi.org/10.4304/jnw.5.2.242-250","url":null,"abstract":"Recent progress of optical code processing technology is explained. Ultra-high speed time domain, spectral domain, hybrid domain, and multiple optical code processing devices and systems are shown. As application of these technologies, OCDMA-PON, OPS network, and terahertz optical clock generation are demonstrated.","PeriodicalId":230802,"journal":{"name":"2008 10th Anniversary International Conference on Transparent Optical Networks","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114288782","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 : 2008-06-22DOI: 10.1109/ICTON.2008.4598689
C. Ferrari, F. Morichetti, L. Flaccadori, A. Melloni
Reconfigurable architectures based on bi-dimensional arrays of integrated ring-resonators (RRs), also known as resonant routers (ReRs), are good candidates for implementing advanced routing and switching operations in both WDM and access optical networks. ReRs provide high flexibility, full reconfigurability and the capability of handling many WDM optical channels in small footprint devices. In this contribution, we demonstrate experimentally that the bandwidth of a ReR can be significantly narrowed with respect to the signal bandwidth, while corrupting neither the signal quality nor the crosstalk between routed channels. To this aim, a small frequency detuning between the signal carrier and the ReRpsilas frequency response is introduced. In this condition, the frequency chirp provided by the RRs dispersion can also be exploited to make the transmitted signals more robust against fiber chromatic dispersion. The routing of two intensity modulated 2.5 Gbit/s and 10 Gbit/s NRZ channels through a 2times2 integrated ReR with 4 GHz bandwidth is reported and the signal quality after propagation through several spans of optical fiber is evaluated.
{"title":"Chromatic dispersion compensation in a ring resonator wavelength router","authors":"C. Ferrari, F. Morichetti, L. Flaccadori, A. Melloni","doi":"10.1109/ICTON.2008.4598689","DOIUrl":"https://doi.org/10.1109/ICTON.2008.4598689","url":null,"abstract":"Reconfigurable architectures based on bi-dimensional arrays of integrated ring-resonators (RRs), also known as resonant routers (ReRs), are good candidates for implementing advanced routing and switching operations in both WDM and access optical networks. ReRs provide high flexibility, full reconfigurability and the capability of handling many WDM optical channels in small footprint devices. In this contribution, we demonstrate experimentally that the bandwidth of a ReR can be significantly narrowed with respect to the signal bandwidth, while corrupting neither the signal quality nor the crosstalk between routed channels. To this aim, a small frequency detuning between the signal carrier and the ReRpsilas frequency response is introduced. In this condition, the frequency chirp provided by the RRs dispersion can also be exploited to make the transmitted signals more robust against fiber chromatic dispersion. The routing of two intensity modulated 2.5 Gbit/s and 10 Gbit/s NRZ channels through a 2times2 integrated ReR with 4 GHz bandwidth is reported and the signal quality after propagation through several spans of optical fiber is evaluated.","PeriodicalId":230802,"journal":{"name":"2008 10th Anniversary International Conference on Transparent Optical Networks","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114291769","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 : 2008-06-22DOI: 10.1109/ICTON.2008.4598627
M. Usami
In this paper, KDDIpsilas vision and strategy for realizing so-called next generation network is presented. We announced ldquoultra 3Grdquo concept as a fixed-mobile converged network, which is built through a natural migration/extension process rather than building brand new NGN system. Our ldquoultra 3Grdquo network will enable customers to enjoy the real FMBC services, such as the high speed data services and high quality multimedia services whenever and wherever without awareness of the access network or complicated handover operations. Recent topics of our Ultra 3G such as new global submarine cable systems and WiMAX are reviewed. Future photonic technologies for realizing ultra-broadband network will also be addressed.
{"title":"Strategy for KDDI’s next generation network","authors":"M. Usami","doi":"10.1109/ICTON.2008.4598627","DOIUrl":"https://doi.org/10.1109/ICTON.2008.4598627","url":null,"abstract":"In this paper, KDDIpsilas vision and strategy for realizing so-called next generation network is presented. We announced ldquoultra 3Grdquo concept as a fixed-mobile converged network, which is built through a natural migration/extension process rather than building brand new NGN system. Our ldquoultra 3Grdquo network will enable customers to enjoy the real FMBC services, such as the high speed data services and high quality multimedia services whenever and wherever without awareness of the access network or complicated handover operations. Recent topics of our Ultra 3G such as new global submarine cable systems and WiMAX are reviewed. Future photonic technologies for realizing ultra-broadband network will also be addressed.","PeriodicalId":230802,"journal":{"name":"2008 10th Anniversary International Conference on Transparent Optical Networks","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125929160","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 : 2008-06-22DOI: 10.1109/ICTON.2008.4598397
K. Zoiros, P. Avramidis, C. Koukourlis
The feasibility of operating the semiconductor optical amplifier (SOA)-based ultrafast nonlinear interferometer (UNI) in non-trivial switching mode is theoretically investigated and demonstrated using for this purpose a comprehensive model. By conducting numerical simulation the impact of the involved critical parameters on the Q-factor is thoroughly investigated and assessed enabling to extract useful design rules for their proper selection so as to ensure error-free performance at the desired output port of the specific interferometric arrangement. The obtained results may assist the study and implementation of all-optical circuits and subsystems of enhanced functionality, in particular with feedback, in which the UNI employing a SOA as the nonlinear element is the core logical module.
{"title":"Design analysis of SOA-based UNI in non-trivial switching mode","authors":"K. Zoiros, P. Avramidis, C. Koukourlis","doi":"10.1109/ICTON.2008.4598397","DOIUrl":"https://doi.org/10.1109/ICTON.2008.4598397","url":null,"abstract":"The feasibility of operating the semiconductor optical amplifier (SOA)-based ultrafast nonlinear interferometer (UNI) in non-trivial switching mode is theoretically investigated and demonstrated using for this purpose a comprehensive model. By conducting numerical simulation the impact of the involved critical parameters on the Q-factor is thoroughly investigated and assessed enabling to extract useful design rules for their proper selection so as to ensure error-free performance at the desired output port of the specific interferometric arrangement. The obtained results may assist the study and implementation of all-optical circuits and subsystems of enhanced functionality, in particular with feedback, in which the UNI employing a SOA as the nonlinear element is the core logical module.","PeriodicalId":230802,"journal":{"name":"2008 10th Anniversary International Conference on Transparent Optical Networks","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126334409","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 : 2008-06-22DOI: 10.1109/ICTON.2008.4598694
M. Waldmann, R. Caspary, D. Esser, D. Wortmann, J. Gottmann, W. Kowalsky
Since green laser diodes are still not commercially available, alternative technologies like frequency doubling have to be used for compact green laser sources. The goal of this work is to develop diode pumped green erbium-doped glass up-conversion waveguide lasers, instead. Planar fluoride glass waveguides are fabricated using a spin-coating technology. Until now, planar fluoride glass film waveguides with thicknesses are achieved down to 30 mum. The waveguides were doped with up to 3 mol% erbium. Scattering losses of 0.2 dB/cm at 975 nm and strong green emission at 520 - 550 nm is observed in erbium-doped waveguides 50 mum in thickness.
{"title":"Erbium-doped fluoride glass waveguides","authors":"M. Waldmann, R. Caspary, D. Esser, D. Wortmann, J. Gottmann, W. Kowalsky","doi":"10.1109/ICTON.2008.4598694","DOIUrl":"https://doi.org/10.1109/ICTON.2008.4598694","url":null,"abstract":"Since green laser diodes are still not commercially available, alternative technologies like frequency doubling have to be used for compact green laser sources. The goal of this work is to develop diode pumped green erbium-doped glass up-conversion waveguide lasers, instead. Planar fluoride glass waveguides are fabricated using a spin-coating technology. Until now, planar fluoride glass film waveguides with thicknesses are achieved down to 30 mum. The waveguides were doped with up to 3 mol% erbium. Scattering losses of 0.2 dB/cm at 975 nm and strong green emission at 520 - 550 nm is observed in erbium-doped waveguides 50 mum in thickness.","PeriodicalId":230802,"journal":{"name":"2008 10th Anniversary International Conference on Transparent Optical Networks","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129206406","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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