Pub Date : 2010-12-01DOI: 10.1109/HONET.2010.5715766
R. Azzam
Optical polarimeters that measure the state of polarization (SOP) of fully or partially polarized monochromatic or quasi-monochromatic light traveling in free space or guided by optical fibers are briefly reviewed. Fast detection of the SOP, as described by the four Stokes parameters, has important applications for optical sensing, monitoring, and coherent light-wave communication systems.
{"title":"Free-space and fiber-optic polarimeters","authors":"R. Azzam","doi":"10.1109/HONET.2010.5715766","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715766","url":null,"abstract":"Optical polarimeters that measure the state of polarization (SOP) of fully or partially polarized monochromatic or quasi-monochromatic light traveling in free space or guided by optical fibers are briefly reviewed. Fast detection of the SOP, as described by the four Stokes parameters, has important applications for optical sensing, monitoring, and coherent light-wave communication systems.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":"2013 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121799612","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 : 2010-12-01DOI: 10.1109/HONET.2010.5715788
F. S. Ujager, Zia-ul-Haq, M. Ramzan, S. Zaidi
Optical Burst Switching (OBS) is a promising switching technology for the next generation all-optical networks. Quality of Service (QoS) is a challenging issue of O BS network and several techniques have been proposed with some limitations. The existing schemes do not guarantees, end to end, loss free delivery of high priority data bursts in Differentiated Services (DiffServ). The proposed algorithm is aimed at loss free delivery of high priority burst inside the OBS network. For high delay sensitive data (most high priority data) a separate wavelength is assigned efficiently on any node by synchronizing all core by a single clock which assures no wavelength contention occurs in the core network. Simulation results shows that proposed algorithm achieves zero percent loss probability for the most high priority data bursts by efficiently utilizing network resources.
{"title":"An independent wavelength assignment, QoS differentiation scheme, in DWDM OBS networks, for zero high priority burst loss","authors":"F. S. Ujager, Zia-ul-Haq, M. Ramzan, S. Zaidi","doi":"10.1109/HONET.2010.5715788","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715788","url":null,"abstract":"Optical Burst Switching (OBS) is a promising switching technology for the next generation all-optical networks. Quality of Service (QoS) is a challenging issue of O BS network and several techniques have been proposed with some limitations. The existing schemes do not guarantees, end to end, loss free delivery of high priority data bursts in Differentiated Services (DiffServ). The proposed algorithm is aimed at loss free delivery of high priority burst inside the OBS network. For high delay sensitive data (most high priority data) a separate wavelength is assigned efficiently on any node by synchronizing all core by a single clock which assures no wavelength contention occurs in the core network. Simulation results shows that proposed algorithm achieves zero percent loss probability for the most high priority data bursts by efficiently utilizing network resources.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127568342","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 : 2010-12-01DOI: 10.1109/HONET.2010.5715790
D. Michel, F. Xiao, K. Alameh
A novel approach using an Opto-VLSI processor to achieve a tunable fibre laser is presented. The Opto-VLSI based fibre laser is able to tune wavelengths and maintain a high Side-Mode Suppression Ratio (SMSR) even when the output optical power is low. Experimental results show a continuously tunable fibre laser source with a tuning range as high as 30 nm and a SMSR exceeding 30 dB.
{"title":"Opto-VLSI-based tunable linear-cavity fibre laser","authors":"D. Michel, F. Xiao, K. Alameh","doi":"10.1109/HONET.2010.5715790","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715790","url":null,"abstract":"A novel approach using an Opto-VLSI processor to achieve a tunable fibre laser is presented. The Opto-VLSI based fibre laser is able to tune wavelengths and maintain a high Side-Mode Suppression Ratio (SMSR) even when the output optical power is low. Experimental results show a continuously tunable fibre laser source with a tuning range as high as 30 nm and a SMSR exceeding 30 dB.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130308414","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 : 2010-12-01DOI: 10.1109/HONET.2010.5715785
M. Vasiliev, M. Nur-E-Alam, V. Kotov, K. Alameh
We investigate the properties and applications of newly-developed RF-sputtered nano-composites with record-high magneto-optic quality (exceeding 25° at 532 nm and 42° at 635 nm). Bi-substituted dysprosium-gallium iron garnet layers with excess co-sputtered bismuth oxide content are demonstrated to possess very attractive optical and magnetic properties, which makes them suitable for novel magneto-optic and nanophotonic applications.
{"title":"The properties of nanocomposite (BiDy)3(FeGa)5O12:Bi2O3 magneto-optic garnet films for applications in nanophotonics, ultrafast switching and integrated optoelectronics","authors":"M. Vasiliev, M. Nur-E-Alam, V. Kotov, K. Alameh","doi":"10.1109/HONET.2010.5715785","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715785","url":null,"abstract":"We investigate the properties and applications of newly-developed RF-sputtered nano-composites with record-high magneto-optic quality (exceeding 25° at 532 nm and 42° at 635 nm). Bi-substituted dysprosium-gallium iron garnet layers with excess co-sputtered bismuth oxide content are demonstrated to possess very attractive optical and magnetic properties, which makes them suitable for novel magneto-optic and nanophotonic applications.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124473139","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 : 2010-12-01DOI: 10.1109/HONET.2010.5715747
Ali Haider, K. Acharya, M. Raja
In the access part of the network, passive optical networks (PON) are the top priority due to their robustness and large data carrying capacity. The customer premises equipment consumes 65% of the total power. We propose a cross layer model for saving energy in the optical network units (ONU). Our solution involves analysis of TCP traffic by extracting session information from the traffic and determining idle times between sessions. These idle times allow us to turn-off the laser diodes in ONUs at the user end. The Fabry-perot laser diodes (FP) typically run on 10mA of current and produce approximately 2.5 volts of output. By turning off the diode we intend to save energy for periods of time when there is no data to transmit. We also investigate the effects of turning the laser diode on off frequently on the diode itself. Our experimental data shows no significant degradation in the output power stability. Moreover, we can cumulatively save considerable amount of energy.
{"title":"Cross-layer TCP flow aware model for energy efficient use of FP lasers in passive optical networks","authors":"Ali Haider, K. Acharya, M. Raja","doi":"10.1109/HONET.2010.5715747","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715747","url":null,"abstract":"In the access part of the network, passive optical networks (PON) are the top priority due to their robustness and large data carrying capacity. The customer premises equipment consumes 65% of the total power. We propose a cross layer model for saving energy in the optical network units (ONU). Our solution involves analysis of TCP traffic by extracting session information from the traffic and determining idle times between sessions. These idle times allow us to turn-off the laser diodes in ONUs at the user end. The Fabry-perot laser diodes (FP) typically run on 10mA of current and produce approximately 2.5 volts of output. By turning off the diode we intend to save energy for periods of time when there is no data to transmit. We also investigate the effects of turning the laser diode on off frequently on the diode itself. Our experimental data shows no significant degradation in the output power stability. Moreover, we can cumulatively save considerable amount of energy.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125012906","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 : 2010-12-01DOI: 10.1109/HONET.2010.5715792
S. Elnaby
Fermat's principle was used in its inverse way. Needed light path can be designed according to application. So the light rays curvature is known at each point in the space. The proposed method allows to determine numerically the needed value of the index of refraction at each point in the space. Results show that only thin layers with a mixture of positive and negative gradient of the refractive index is needed in the studies applications.
{"title":"Inverse raytracing for metamaterial design","authors":"S. Elnaby","doi":"10.1109/HONET.2010.5715792","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715792","url":null,"abstract":"Fermat's principle was used in its inverse way. Needed light path can be designed according to application. So the light rays curvature is known at each point in the space. The proposed method allows to determine numerically the needed value of the index of refraction at each point in the space. Results show that only thin layers with a mixture of positive and negative gradient of the refractive index is needed in the studies applications.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133404845","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 : 2010-12-01DOI: 10.1109/HONET.2010.5715755
Zahed M. Khan, Tien K. Ng, U. Schwingenschlogl, B. Ooi
We present a rate equation model for the analysis of static and dynamic characteristics of InAs/InP quantum-dash (Qdash) semiconductor laser. The model is applied to calculate the differential modal gain (DMG) and linewidth enhancement factor (LEF) of the Qdash laser. In addition, the effect of varying the Qdash height on these dynamic parameters is evaluated. The model predicts a decrease in the differential modal gain with increase in the Qdash height while the LEF value generally does not get affected. The LEF and DMG of the Qdash laser at peak gain attain a value of ∼1–1.5 and ∼0.6×10−15 −1.0×10−15 cm2, respectively.
{"title":"The influence of quantum-dash height on the differential gain and linewidth enhancement factor of InAs/InP quantum-dash lasers","authors":"Zahed M. Khan, Tien K. Ng, U. Schwingenschlogl, B. Ooi","doi":"10.1109/HONET.2010.5715755","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715755","url":null,"abstract":"We present a rate equation model for the analysis of static and dynamic characteristics of InAs/InP quantum-dash (Qdash) semiconductor laser. The model is applied to calculate the differential modal gain (DMG) and linewidth enhancement factor (LEF) of the Qdash laser. In addition, the effect of varying the Qdash height on these dynamic parameters is evaluated. The model predicts a decrease in the differential modal gain with increase in the Qdash height while the LEF value generally does not get affected. The LEF and DMG of the Qdash laser at peak gain attain a value of ∼1–1.5 and ∼0.6×10<sup>−15</sup> −1.0×10<sup>−15</sup> cm<sup>2</sup>, respectively.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":"90 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114055076","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 : 2010-12-01DOI: 10.1109/HONET.2010.5715763
K. Alameh, Y. T. Lee, F. Xiao
In this paper, we review the various tuning mechanisms and gain mechanisms for single-wavelength and multi-wavelength tunable fiber lasers and discuss their advantages and limitations. We also propose and demonstrate the concepts of novel single- and multi-wavelength tunable laser structures employing Opto-VLSI technology in conjunction with optical amplifiers. We experimentally demonstrate tunable fiber laser structures capable of generating single and/or multiple wavelengths laser sources with laser linewidth as narrow as 0.05 nm, optical side-mode-suppression-ratio (SMSR) of about 35 dB with excellent stability at room temperature and output power uniformity less than 0.5 dB over the whole C-band.
{"title":"Opto-VLSI-based tunable multiwavelength fiber lasers","authors":"K. Alameh, Y. T. Lee, F. Xiao","doi":"10.1109/HONET.2010.5715763","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715763","url":null,"abstract":"In this paper, we review the various tuning mechanisms and gain mechanisms for single-wavelength and multi-wavelength tunable fiber lasers and discuss their advantages and limitations. We also propose and demonstrate the concepts of novel single- and multi-wavelength tunable laser structures employing Opto-VLSI technology in conjunction with optical amplifiers. We experimentally demonstrate tunable fiber laser structures capable of generating single and/or multiple wavelengths laser sources with laser linewidth as narrow as 0.05 nm, optical side-mode-suppression-ratio (SMSR) of about 35 dB with excellent stability at room temperature and output power uniformity less than 0.5 dB over the whole C-band.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127987915","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 : 2010-12-01DOI: 10.1109/HONET.2010.5715778
M. Alayesh, N. Ghani, M. Qasaymeh
Power control is a crucial concern in cognitive radio networks where secondary users compete to access spectrum of primary users. However, most existing studies in this space have only looked at the interactions between secondary users, without considering the impact of primary user behaviors. Along these lines, this study proposes a novel realistic primary-secondary game-theoretic scheme which rewards primary users who share their spectrum and allow secondary users to achieve energy-efficient transmissions. The proposed model is analyzed for Rayleigh fast-fading channels where a closed-form expression is also derived for the average utility function. The existence of a unique Nash equilibrium is also shown. Finally, detailed simulation results are presented to verify the broader performance of the scheme under realistic channel conditions compared to the poor additive white Gaussian noise (AWGN) channel model.
{"title":"Performance of a primary-secondary user power control game for cognitive radios under Rayleigh fast fading channel","authors":"M. Alayesh, N. Ghani, M. Qasaymeh","doi":"10.1109/HONET.2010.5715778","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715778","url":null,"abstract":"Power control is a crucial concern in cognitive radio networks where secondary users compete to access spectrum of primary users. However, most existing studies in this space have only looked at the interactions between secondary users, without considering the impact of primary user behaviors. Along these lines, this study proposes a novel realistic primary-secondary game-theoretic scheme which rewards primary users who share their spectrum and allow secondary users to achieve energy-efficient transmissions. The proposed model is analyzed for Rayleigh fast-fading channels where a closed-form expression is also derived for the average utility function. The existence of a unique Nash equilibrium is also shown. Finally, detailed simulation results are presented to verify the broader performance of the scheme under realistic channel conditions compared to the poor additive white Gaussian noise (AWGN) channel model.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124916203","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 : 2010-12-01DOI: 10.1109/HONET.2010.5715746
Rodney G. Wilson
There are key building blocks and foundational technologies necessary to achieve 21st century Research and Education networking. The characteristics of high capacity single channel, accommodation for large data flows in bursty or at unpredictable times, ultra fast multi domain provisioning, low and constant latency throughput needed by e-science researchers across the globe are not easily achieved. Speeds beyond 10Gb/s are available from leading vendors. 40G solutions are now widely available, 100G is an emerging “early adopter” technology available from a few leading vendors. But what are the foundations from these currently available technological building blocks necessary for higher still capacities and what are the data flows in the R&E community that need them?
{"title":"Discussions concerning 40/100 Gb/s and emerging developments in optical networks for ultra long haul communications within existing infrastructures","authors":"Rodney G. Wilson","doi":"10.1109/HONET.2010.5715746","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715746","url":null,"abstract":"There are key building blocks and foundational technologies necessary to achieve 21st century Research and Education networking. The characteristics of high capacity single channel, accommodation for large data flows in bursty or at unpredictable times, ultra fast multi domain provisioning, low and constant latency throughput needed by e-science researchers across the globe are not easily achieved. Speeds beyond 10Gb/s are available from leading vendors. 40G solutions are now widely available, 100G is an emerging “early adopter” technology available from a few leading vendors. But what are the foundations from these currently available technological building blocks necessary for higher still capacities and what are the data flows in the R&E community that need them?","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121589892","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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