Pub Date : 2010-12-01DOI: 10.1109/HONET.2010.5715781
M. El-Sayed, Pierre John Ibrahim, F. Gunzer
Optical Time Domain Reflectometry (OTDR) is a standard technique used to investigate the quality of optical fiber installations. It basically measures power loss and reflectance properties of optical fibers. These quantities are significantly influenced if fiber faults (broken fiber, bends, but also connectors and splices) are present. Thus OTDR devices can be used to locate fiber faults. How precise they can do this has a large effect on the effort needed in order to remove faults. Thus we present in this paper data that has been obtained by using a commercial OTDR device to detect the before mentioned faults. This data will be analyzed regarding the characteristics of the OTDR response depending on the fault type, with special emphasis on the precision of the fault location's determination.
{"title":"Investigation of the precision regarding fiber fault location with a commercial Optical Time Domain Reflectometer","authors":"M. El-Sayed, Pierre John Ibrahim, F. Gunzer","doi":"10.1109/HONET.2010.5715781","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715781","url":null,"abstract":"Optical Time Domain Reflectometry (OTDR) is a standard technique used to investigate the quality of optical fiber installations. It basically measures power loss and reflectance properties of optical fibers. These quantities are significantly influenced if fiber faults (broken fiber, bends, but also connectors and splices) are present. Thus OTDR devices can be used to locate fiber faults. How precise they can do this has a large effect on the effort needed in order to remove faults. Thus we present in this paper data that has been obtained by using a commercial OTDR device to detect the before mentioned faults. This data will be analyzed regarding the characteristics of the OTDR response depending on the fault type, with special emphasis on the precision of the fault location's determination.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121659886","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.2010.5715764
M. Slavik, I. Mahgoub, A. Badi, M. Ilyas
JiST/SWANS is a wireless network simulator gaining increasing popularity for ad-hoc wireless, wireless sensor network, and vehicular network evaluations. Typical published results using this tool show node counts on the order of hundreds of nodes. However, realistic sensor and vehicular networks may contain many more nodes than that. One reason for this discrepancy is the computational cost of evaluation via simulation. Currently, cluster computers are becoming preferred over expensive multi-processor supercomputers for improving computational output. We present the design and implementation of a parallelization of JiST, the discrete event simulator core of JiST/SWANS. JiST uses unique dynamic byte-code rewriting to simplify the development of applications and has been shown to perform well running small- or medium-scale wireless network simulations on single processor systems. We propose an optimistic cluster-based architecture and apply it to JiST. Simulation entity memory is distributed evenly across all nodes in the cluster, resulting in linear memory growth. Details of the simulation engine including the complex event execution synchronization are hidden entirely from the application, easing development and debug time. Since JiST is the simulation backend of the SWANS wireless network simulator, this result is the first step in simulating large networks using SWANS in reasonable periods of time. Results presented show the performance of our parallelization of JiST is in line with the performance of other existing parallel discrete event simulators.
{"title":"Design and implementation of parallel JiST to support distributed wireless network simulation","authors":"M. Slavik, I. Mahgoub, A. Badi, M. Ilyas","doi":"10.1109/HONET.2010.5715764","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715764","url":null,"abstract":"JiST/SWANS is a wireless network simulator gaining increasing popularity for ad-hoc wireless, wireless sensor network, and vehicular network evaluations. Typical published results using this tool show node counts on the order of hundreds of nodes. However, realistic sensor and vehicular networks may contain many more nodes than that. One reason for this discrepancy is the computational cost of evaluation via simulation. Currently, cluster computers are becoming preferred over expensive multi-processor supercomputers for improving computational output. We present the design and implementation of a parallelization of JiST, the discrete event simulator core of JiST/SWANS. JiST uses unique dynamic byte-code rewriting to simplify the development of applications and has been shown to perform well running small- or medium-scale wireless network simulations on single processor systems. We propose an optimistic cluster-based architecture and apply it to JiST. Simulation entity memory is distributed evenly across all nodes in the cluster, resulting in linear memory growth. Details of the simulation engine including the complex event execution synchronization are hidden entirely from the application, easing development and debug time. Since JiST is the simulation backend of the SWANS wireless network simulator, this result is the first step in simulating large networks using SWANS in reasonable periods of time. Results presented show the performance of our parallelization of JiST is in line with the performance of other existing parallel discrete event simulators.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131836421","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.2010.5715751
Ehab A. Omar, K. Elsayed
Directional antennas are well known for being capable of performance improvement in wireless ad-hoc networks. In the IEEE 802.11 MAC protocol when two nodes are communicating with each other, all other nodes in the transmission zone are required to remain idle. With the use of directional antennas, it is possible to have two pairs of nodes located in each other's transmission range to communicate simultaneously; this increases the spatial reuse of the wireless channel. However, directional antennas suffer from deafness and hidden terminal problems and therefore new mechanisms are required for exploitation of the directional antennas in an intelligent manner. In this paper we present a scheme based on switched beam directional antenna with busy tone for controlling the directional antenna beams for maximum spatial reuse and saving in energy consumption. The purpose of the busy tone signal is to inform nodes in the transmission zone about the current transmission which helps solving hidden terminal and deafness problems. We present performance evaluation results which confirm the significant improvement in both throughput and energy consumption. We also study the effect of the number of beams on the throughput and energy consumption.
{"title":"Directional antenna with busy tone for capacity boosting and energy savings in wireless ad-hoc networks","authors":"Ehab A. Omar, K. Elsayed","doi":"10.1109/HONET.2010.5715751","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715751","url":null,"abstract":"Directional antennas are well known for being capable of performance improvement in wireless ad-hoc networks. In the IEEE 802.11 MAC protocol when two nodes are communicating with each other, all other nodes in the transmission zone are required to remain idle. With the use of directional antennas, it is possible to have two pairs of nodes located in each other's transmission range to communicate simultaneously; this increases the spatial reuse of the wireless channel. However, directional antennas suffer from deafness and hidden terminal problems and therefore new mechanisms are required for exploitation of the directional antennas in an intelligent manner. In this paper we present a scheme based on switched beam directional antenna with busy tone for controlling the directional antenna beams for maximum spatial reuse and saving in energy consumption. The purpose of the busy tone signal is to inform nodes in the transmission zone about the current transmission which helps solving hidden terminal and deafness problems. We present performance evaluation results which confirm the significant improvement in both throughput and energy consumption. We also study the effect of the number of beams on the throughput and energy consumption.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131155627","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.2010.5715775
A. Helaly
An on-off keying (OOK) optical code division multiple access (OCDMA) chip-level receiver that uses acoustooptic deflector (AOD) is presented. This receiver saves the hardware complexity encountered in conventional chip-level receivers, especially for large number of time chips. In OOK OCDMA, larger number of chips is required in order to improve the error performance or increase the number of users. The presented receiver may require no chip synchronization but symbol or frame synchronization is required. The proposed receiver can be used in tunable optical codes with minimum change in the hardware. However, this receiver has more multiple access interference (MAI) which can be reduced using optical pulse shaping or increasing the spatial separation between focused beams in the AOD. Commercially available AODs can decode OOK OCDMA signals with number of chips Yl as large as one thousand or more. The geometry, design, and operation of an AO OOK OCDMA receiver are introduced, error performance is discussed, and interference analysis is presented.
{"title":"A chip-level OOK OCDMA receiver using an acoustooptic deflector","authors":"A. Helaly","doi":"10.1109/HONET.2010.5715775","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715775","url":null,"abstract":"An on-off keying (OOK) optical code division multiple access (OCDMA) chip-level receiver that uses acoustooptic deflector (AOD) is presented. This receiver saves the hardware complexity encountered in conventional chip-level receivers, especially for large number of time chips. In OOK OCDMA, larger number of chips is required in order to improve the error performance or increase the number of users. The presented receiver may require no chip synchronization but symbol or frame synchronization is required. The proposed receiver can be used in tunable optical codes with minimum change in the hardware. However, this receiver has more multiple access interference (MAI) which can be reduced using optical pulse shaping or increasing the spatial separation between focused beams in the AOD. Commercially available AODs can decode OOK OCDMA signals with number of chips Yl as large as one thousand or more. The geometry, design, and operation of an AO OOK OCDMA receiver are introduced, error performance is discussed, and interference analysis is presented.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116365289","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.2010.5715774
S. Jawhar, Bernard A. Cousin, S. Lahoud
When multicasting in optical networks is implemented within the switching control plane, it combines the efficiency of multicast trees along with the high speed and low delay of optical communications. Multicast nodes must be equipped with light splitters. Light splitters are expensive equipment. Therefore, a limited number of optical nodes will have this splitting capability. A good placement of optical splitters can increase the efficiency of the multicast signaling and routing techniques on the one hand, and reduce the number of splitters on the other hand. This leads to faster multicast trees setting up, lower data transmission delays, and less traffic on the network links; thus saving of optical links capacity for other multicast and unicast transmissions. In order to achieve efficient multicasting in optical network, we propose to take into account network characteristics i.e. link capacity and node degree when placing the optical splitters. The benefits of the smart placement of light splitters will be clearly shown in heterogeneous optical networks, where multicast traffic is not uniformly distributed over the network, and optical links connecting different nodes in the network have different characteristics.
{"title":"Efficient placement of light splitters in heterogeneous optical networks","authors":"S. Jawhar, Bernard A. Cousin, S. Lahoud","doi":"10.1109/HONET.2010.5715774","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715774","url":null,"abstract":"When multicasting in optical networks is implemented within the switching control plane, it combines the efficiency of multicast trees along with the high speed and low delay of optical communications. Multicast nodes must be equipped with light splitters. Light splitters are expensive equipment. Therefore, a limited number of optical nodes will have this splitting capability. A good placement of optical splitters can increase the efficiency of the multicast signaling and routing techniques on the one hand, and reduce the number of splitters on the other hand. This leads to faster multicast trees setting up, lower data transmission delays, and less traffic on the network links; thus saving of optical links capacity for other multicast and unicast transmissions. In order to achieve efficient multicasting in optical network, we propose to take into account network characteristics i.e. link capacity and node degree when placing the optical splitters. The benefits of the smart placement of light splitters will be clearly shown in heterogeneous optical networks, where multicast traffic is not uniformly distributed over the network, and optical links connecting different nodes in the network have different characteristics.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121726772","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.2010.5715786
Ahmed. M. Abdel Mo'men, H. Hamza, I. Saroit
A Mobile Ad-hoc Network (MANET) is a collection of autonomous nodes that communicate with each other by forming a multi-hop radio network. Routing protocols in MANETs define how routes between source and destination nodes are established and maintained. Multicast routing provides a bandwidth-efficient means for supporting group-oriented applications. The increasing demand for such applications coupled with the inherit characteristics of MANETs (e.g., lack of infrastructure and node mobility) have made secure multicast routing crucial yet challenging issue. Recently, several multicast routing protocols have been proposed in MANETs. This paper presents a comprehensive survey on multicast routing protocols along with their security techniques and the types of attacks they can confront. A comparison for the capability of the various secured multicast routing protocols against the identified attacks is also presented.
{"title":"A survey on security enhanced multicast routing protocols in Mobile Ad hoc Networks","authors":"Ahmed. M. Abdel Mo'men, H. Hamza, I. Saroit","doi":"10.1109/HONET.2010.5715786","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715786","url":null,"abstract":"A Mobile Ad-hoc Network (MANET) is a collection of autonomous nodes that communicate with each other by forming a multi-hop radio network. Routing protocols in MANETs define how routes between source and destination nodes are established and maintained. Multicast routing provides a bandwidth-efficient means for supporting group-oriented applications. The increasing demand for such applications coupled with the inherit characteristics of MANETs (e.g., lack of infrastructure and node mobility) have made secure multicast routing crucial yet challenging issue. Recently, several multicast routing protocols have been proposed in MANETs. This paper presents a comprehensive survey on multicast routing protocols along with their security techniques and the types of attacks they can confront. A comparison for the capability of the various secured multicast routing protocols against the identified attacks is also presented.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121027508","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.2010.5715776
K. Kamakura
A parallel combinatory (PC)-hybrid pulse interval modulation-optical code division multiple access (hPIM-OCDMA) system is proposed. In the PC-hPIM-OCDMA system, a user chooses ε among K code sequences assigned to the user and sends ε2b-ary PIM symbols for a given frame, where b is the number of bits per PIM symbol. The PC-hPIM-OCDMA system can offer higher bit rate than hPIM-OCDMA systems, and then it can reduce the effect of MAI, without reducing the bit rate. The bit error rate (BER) of PC-hPIM-OCDMA is derived, by considering that the dominant interference is MAI, which is caused by cross-correlation of strict optical orthogonal codes (SOOCs). Numerical results show that the PC-hPIM-OCDMA system can offer lower BER and accommodate more users than hPIM-OCDMA systems.
{"title":"Performance analysis of parallel combinatory hybrid pulse interval modulation optical code division multiple access systems","authors":"K. Kamakura","doi":"10.1109/HONET.2010.5715776","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715776","url":null,"abstract":"A parallel combinatory (PC)-hybrid pulse interval modulation-optical code division multiple access (hPIM-OCDMA) system is proposed. In the PC-hPIM-OCDMA system, a user chooses ε among K code sequences assigned to the user and sends ε2b-ary PIM symbols for a given frame, where b is the number of bits per PIM symbol. The PC-hPIM-OCDMA system can offer higher bit rate than hPIM-OCDMA systems, and then it can reduce the effect of MAI, without reducing the bit rate. The bit error rate (BER) of PC-hPIM-OCDMA is derived, by considering that the dominant interference is MAI, which is caused by cross-correlation of strict optical orthogonal codes (SOOCs). Numerical results show that the PC-hPIM-OCDMA system can offer lower BER and accommodate more users than hPIM-OCDMA systems.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132059284","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.2010.5715782
A. Hussain, Salahuddin Qazi
The correlation between information and communication technology (ICT), and economic growth is well-known and its use for development is already an established goal by UN in the developing countries. Its use in Pakistani villages where approximately 70 % of the population presents many challenges such as lack of connectivity, education and electricity. The planners should not only provide high speed networks but ensure that it can provide the services for the betterment of people living in Pakistani villages. It should also deliver and educate people in the villages by way of web based education and distance learning. The purpose of this paper is to review the efforts made by Pakistan Social Association (PSA) in establishing an E-village in Pakistan by discussing its concept, mission, objective and implementation strategy. The paper also discusses the initial results of their efforts in establishing the first E-village at Mera Bagwal and details of future work.
{"title":"Development of E-village in Pakistan","authors":"A. Hussain, Salahuddin Qazi","doi":"10.1109/HONET.2010.5715782","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715782","url":null,"abstract":"The correlation between information and communication technology (ICT), and economic growth is well-known and its use for development is already an established goal by UN in the developing countries. Its use in Pakistani villages where approximately 70 % of the population presents many challenges such as lack of connectivity, education and electricity. The planners should not only provide high speed networks but ensure that it can provide the services for the betterment of people living in Pakistani villages. It should also deliver and educate people in the villages by way of web based education and distance learning. The purpose of this paper is to review the efforts made by Pakistan Social Association (PSA) in establishing an E-village in Pakistan by discussing its concept, mission, objective and implementation strategy. The paper also discusses the initial results of their efforts in establishing the first E-village at Mera Bagwal and details of future work.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127547509","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.2010.5715759
M. Anuar, S. Aljunid, A. R. Arief, N. Saad
In this paper we propose a Zero Cross-correlation (ZCC) code in Optical Code Division Multiple Access (OCDMA) CDMA system based on amplitude spectral encoding of low-cost broadband sources such as Light Emitting Diode (LED). We also study how the sliced spectrum of LED can be used as a cost-effective light source in ZCC code. Our system requires only standard optical elements and simple direct-detection receivers. We show that for number of weight = 4, up to 100 users can transmit asynchronously with an average bit error rate equal to 10−9. This ZCC code also demonstrates that BER of 10−9 can be achieved within the minimum received power of −25.5 dBm.
{"title":"LED spectrum slicing for ZCC SAC-OCDMA coding system","authors":"M. Anuar, S. Aljunid, A. R. Arief, N. Saad","doi":"10.1109/HONET.2010.5715759","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715759","url":null,"abstract":"In this paper we propose a Zero Cross-correlation (ZCC) code in Optical Code Division Multiple Access (OCDMA) CDMA system based on amplitude spectral encoding of low-cost broadband sources such as Light Emitting Diode (LED). We also study how the sliced spectrum of LED can be used as a cost-effective light source in ZCC code. Our system requires only standard optical elements and simple direct-detection receivers. We show that for number of weight = 4, up to 100 users can transmit asynchronously with an average bit error rate equal to 10−9. This ZCC code also demonstrates that BER of 10−9 can be achieved within the minimum received power of −25.5 dBm.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115442075","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.2010.5715762
H. Kaatuzian, H. S. Kojori, Mohammad Danaie
This paper presents a novel method to tune the optical buffers center frequency, bandwidth and slow down factor. In this way, we consider the diamagnetic shift of exciton energy levels in quantum wells. Analysis and simulation of a basic GaAs/AlGaAs quantum wells optical buffer verifies the ability of this new method to control the frequency and time domain properties of an optical slow light device. Simulation shows that magnetic field intensity could increase the limited gigahertz bandwidth of this device up to 1 THz. These achievements are useful in optical nonlinearity enhancement and all-optical signal processing applications.
{"title":"Tunable semiconductor heterostructure slow light optical buffers","authors":"H. Kaatuzian, H. S. Kojori, Mohammad Danaie","doi":"10.1109/HONET.2010.5715762","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715762","url":null,"abstract":"This paper presents a novel method to tune the optical buffers center frequency, bandwidth and slow down factor. In this way, we consider the diamagnetic shift of exciton energy levels in quantum wells. Analysis and simulation of a basic GaAs/AlGaAs quantum wells optical buffer verifies the ability of this new method to control the frequency and time domain properties of an optical slow light device. Simulation shows that magnetic field intensity could increase the limited gigahertz bandwidth of this device up to 1 THz. These achievements are useful in optical nonlinearity enhancement and all-optical signal processing applications.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128263472","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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