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FEM simulation on MEMS FP OTF using Al metallic mirror 基于Al金属反射镜的MEMS FP OTF有限元模拟
2008 5th IFIP International Conference on Wireless and Optical Communications Networks (WOCN '08) Pub Date : 2008-05-05 DOI: 10.1109/WOCN.2008.4542505
N. Ngajikin, G. Witjaksono, N. Kassim, A. .. Mohammad
{"title":"FEM simulation on MEMS FP OTF using Al metallic mirror","authors":"N. Ngajikin, G. Witjaksono, N. Kassim, A. .. Mohammad","doi":"10.1109/WOCN.2008.4542505","DOIUrl":"https://doi.org/10.1109/WOCN.2008.4542505","url":null,"abstract":"MEMS Fabry Perot Optical Tunable Filter (FP OTF) is widely used in WDM application. Most of this device is developed using DBR mirror in order to achieve high reflectivity. However, the usage of this mirror will increase the cost and complexity of MEMS FP OTF fabrication. Some application requires minimal bandwidth where it needs only 95% mirror reflectivity. This can be achieved using metallic mirror. The usage of metallic mirror reduces the complexity of MEMS FP OTF fabrication process. Therefore, FEM simulation model for MEMS FP OTF using Al metallic mirror is developed using CoventorWare 2006 software in order to investigate the performance in terms of optical Intensity and output spectrum within 1200nm to 1600nm wavelength range. Thickness of Al thin film is varied from 100nm to 1000nm to investigate the absorbance, A for a slice of metallic thin film mirror without substrate. MEMS FP OTF using LAI;=200nm and LAI;=500nm Al thin film are developed and simulated using Coventor Ware2006 software. Results are analyzed in terms of transmittivity, Free spectral Range (FSR) and Bandwidth (FWHM).","PeriodicalId":363625,"journal":{"name":"2008 5th IFIP International Conference on Wireless and Optical Communications Networks (WOCN '08)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129269488","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}
引用次数: 3
OXADMs: The next generation of optical switching devices oxadm:下一代光开关器件
2008 5th IFIP International Conference on Wireless and Optical Communications Networks (WOCN '08) Pub Date : 2008-05-05 DOI: 10.1109/WOCN.2008.4542487
M. Ab-Rahman, Ashrani Aizzuddin Abd. Rahni, M. Zan, K. Jumari, S. Shaari, M. F. Ibrahim
{"title":"OXADMs: The next generation of optical switching devices","authors":"M. Ab-Rahman, Ashrani Aizzuddin Abd. Rahni, M. Zan, K. Jumari, S. Shaari, M. F. Ibrahim","doi":"10.1109/WOCN.2008.4542487","DOIUrl":"https://doi.org/10.1109/WOCN.2008.4542487","url":null,"abstract":"This paper introduces a new optical device model named as an optical cross add and drop multiplexer (OXADM) which has potential use in CWDM metro area networks. The device uses the concepts of combination of optical add/drop multiplexing and optical cross connect between two main transmission lines in order to implement the wavelength routing operation [10]. MEMS optical switches are integrated in the device to make it re-configurable. With excellent features, the device is particularly designed to improve network efficiency, flexibility and survivability [7][8]. The device can be used in point to point, ring or mesh network topology to provide functionality such as routing, supervision, transport, multiplexing and restoration of client digital signals processed predominantly in the optical domain [7]. The wavelengths on each optical trunk can be switched between each other while implementing add and drop functions simultaneously. The multiplexer has undergone performance test at 2.5 Gbps (OC- 48) with BER less than 10-9. The maximum length can be achieved by OXADMs is 71 km without amplification at insertion loss 6 dB. A comparison between OXADM with the previous devices such as, OXC, TRN and OXN is also been studied.","PeriodicalId":363625,"journal":{"name":"2008 5th IFIP International Conference on Wireless and Optical Communications Networks (WOCN '08)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114328308","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}
引用次数: 4
Interference impact of WCDMA mobile station on IS-95 Mobile Station performance WCDMA移动站干扰对IS-95移动站性能的影响
2008 5th IFIP International Conference on Wireless and Optical Communications Networks (WOCN '08) Pub Date : 2008-05-05 DOI: 10.1109/WOCN.2008.4542525
Indriani Timang, H. Kanalebe
{"title":"Interference impact of WCDMA mobile station on IS-95 Mobile Station performance","authors":"Indriani Timang, H. Kanalebe","doi":"10.1109/WOCN.2008.4542525","DOIUrl":"https://doi.org/10.1109/WOCN.2008.4542525","url":null,"abstract":"Improper spectrum allocation of PCS 1900 band (IS- 95) and IMT2000 band (WCDMA) in the same geographical area may cause severe interference between those two technologies. As a result inefficiency of spectrum usage is unavoidable, drop calls, and or outage probability of the interference victim (IS-95 Mobile Station) may reach an intolerable level. Therefore, a minimum guard band and or a Minimum Separation Distance are required to reduce the interference impact. Considering the SIR and receiver sensitivity as the reference level, a simulation is developed in this research to find the outage probability assuming that mobile stations are uniformly distributed in the cell with an downlink macro cell propagation model. The results showed, in an environment with a lognormal shadowing deviation standard of 10 dB and 10 MHz guard band, the victim need to be separated 20 m from the WCDMA mobile station in order to obtain outage probability less than 1% if no additional filter is installed.","PeriodicalId":363625,"journal":{"name":"2008 5th IFIP International Conference on Wireless and Optical Communications Networks (WOCN '08)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127998792","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}
引用次数: 2
Pre-binding update scheme using 802.21 over IEEE 802.16e networks 在IEEE 802.16e网络上使用802.21的预绑定更新方案
2008 5th IFIP International Conference on Wireless and Optical Communications Networks (WOCN '08) Pub Date : 2008-05-05 DOI: 10.1109/WOCN.2008.4542534
Hsu-Hung Huang, Jung-Shyr Wu, Shun-Fang Yang
{"title":"Pre-binding update scheme using 802.21 over IEEE 802.16e networks","authors":"Hsu-Hung Huang, Jung-Shyr Wu, Shun-Fang Yang","doi":"10.1109/WOCN.2008.4542534","DOIUrl":"https://doi.org/10.1109/WOCN.2008.4542534","url":null,"abstract":"Many protocols or radio access systems provide some techniques to deal with handover problems. The idea of cross-layer is proposed to facilitate handover across different layers in fast handover mobile IPv6. When FMIPv6 operation enters into reactive mode or wrong handover anticipation, it will result in significant connection disruption and packet loss. This research is focused on layer 3 handover issue based on IEEE 802.16e wireless network. We propose an architecture which uses the method of Pre-Binding Update in order to accelerate FMIPv6 operation, and also combines with 802.21 media independent handover services to avoid incorrect layer 3 handover prediction and reduce the transmission of signal. A simulation comparison with FMIPv6 over 802.16e is presented and a computational signal cost analysis is also performed to verify these different methods.","PeriodicalId":363625,"journal":{"name":"2008 5th IFIP International Conference on Wireless and Optical Communications Networks (WOCN '08)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134098418","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}
引用次数: 3
Performance evolution in optical burst switched networks 光突发交换网络的性能演化
2008 5th IFIP International Conference on Wireless and Optical Communications Networks (WOCN '08) Pub Date : 2008-05-05 DOI: 10.1109/WOCN.2008.4542478
A. Das, P. Banerjee, A. Das
{"title":"Performance evolution in optical burst switched networks","authors":"A. Das, P. Banerjee, A. Das","doi":"10.1109/WOCN.2008.4542478","DOIUrl":"https://doi.org/10.1109/WOCN.2008.4542478","url":null,"abstract":"Optical burst switching (OBS) that combines the advantages of OCS and OPS is an emerging technology to exploit the potential benefits of optical communication, that allow variable burst sizes and has gained much attention from both academic and industry. Low delay and also to reduce burst overlap in the electronic domain of an ingress node and hence to reduce burst loss improves quality of service (QoS). A mathematical model for delay versus traffic loads considering both low and large traffic conditions is developed. In a metropolitan ring network the minimum delay zone is shown considering the variation of channel capacityC, burst size B, and token round trip time R. In a general OBS node it is required to delay some of the transmission of bursts in the ingress node with an electronic buffer. It is shown that in a burst overlapping condition, at lower traffic loads, data produces more delays and increases with the increase of delayed burst time, but at higher loads, the delays are almost same for all values of delayed burst time.","PeriodicalId":363625,"journal":{"name":"2008 5th IFIP International Conference on Wireless and Optical Communications Networks (WOCN '08)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131543344","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}
引用次数: 9
FBG on optical wavelength conversion based-on degenerate FWM in Raman Ring Laser for x-WDM application x-WDM用拉曼环形激光器中基于简并FWM的光纤光栅波长转换
2008 5th IFIP International Conference on Wireless and Optical Communications Networks (WOCN '08) Pub Date : 2008-05-05 DOI: 10.1109/WOCN.2008.4542506
U. Ismail, M. Kadir, S. Shaari, Z. Rahman, A.H. bin Muhamed
{"title":"FBG on optical wavelength conversion based-on degenerate FWM in Raman Ring Laser for x-WDM application","authors":"U. Ismail, M. Kadir, S. Shaari, Z. Rahman, A.H. bin Muhamed","doi":"10.1109/WOCN.2008.4542506","DOIUrl":"https://doi.org/10.1109/WOCN.2008.4542506","url":null,"abstract":"Optical wavelength conversion based-on degenerate four wave mixing (FWM) in Raman ring laser (RRL) in the distance of 3 km of highly nonlinear fiber (HNLF) is demonstrated in this paper. With using single external outsource, we present the effect of wavelength conversion while changing the fiber Bragg-grating (FBG) in RRL.","PeriodicalId":363625,"journal":{"name":"2008 5th IFIP International Conference on Wireless and Optical Communications Networks (WOCN '08)","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133114831","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}
引用次数: 0
A new family of wavelength-time codes for optical CDMA 一种新的用于光CDMA的波长时码族
2008 5th IFIP International Conference on Wireless and Optical Communications Networks (WOCN '08) Pub Date : 2008-05-05 DOI: 10.1109/WOCN.2008.4542481
Tai-Chien Wang, Cheng-Yuan Chang, Guu-chang Yang, W. Kwong
{"title":"A new family of wavelength-time codes for optical CDMA","authors":"Tai-Chien Wang, Cheng-Yuan Chang, Guu-chang Yang, W. Kwong","doi":"10.1109/WOCN.2008.4542481","DOIUrl":"https://doi.org/10.1109/WOCN.2008.4542481","url":null,"abstract":"In this paper, a new family of wavelength-time codes, which is based on (n, w, 1,2) time-spreading optical orthogonal codes (OOCs), is proposed. By having cross-correlation values of at most two, the new two-dimensional (2D) codes provide larger code cardinality to accommodate more subscribers and support heavier code weight to result in better code performance. Under certain conditions, our results show that the new codes outperform other 2D codes that have the cross-correlation values of at most one, such as our previously studied multiple- wavelength OOCs and 2D codes based on (n, w, 2,1) OOCs.","PeriodicalId":363625,"journal":{"name":"2008 5th IFIP International Conference on Wireless and Optical Communications Networks (WOCN '08)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115199973","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}
引用次数: 4
A routing protocol and addressing scheme for oil, gas, and water pipeline monitoring using wireless sensor networks 一个路由协议和寻址方案的石油，天然气和水管道监测使用无线传感器网络
2008 5th IFIP International Conference on Wireless and Optical Communications Networks (WOCN '08) Pub Date : 2008-05-05 DOI: 10.1109/WOCN.2008.4542530
I. Jawhar, N. Mohamed, M. M. Mohamed, J. Aziz
{"title":"A routing protocol and addressing scheme for oil, gas, and water pipeline monitoring using wireless sensor networks","authors":"I. Jawhar, N. Mohamed, M. M. Mohamed, J. Aziz","doi":"10.1109/WOCN.2008.4542530","DOIUrl":"https://doi.org/10.1109/WOCN.2008.4542530","url":null,"abstract":"Wireless sensor networks have a vast amount of applications including environmental monitoring, military, ecology, agriculture, inventory control, robotics and health care. This paper focuses on the area of monitoring, and protection of oil, gas, and water pipelines using wireless sensor networks. ROLS: a routing protocol for linear structure wireless sensor networks is presented along with a new hierarchical addressing scheme for this type of networking environment. The networking framework and associated protocols are optimized to take advantage of the linear nature of the network to decrease installation, and maintenance cost, decrease energy requirements, increase reliability and improve communication efficiency. In addition, simulation experiments using the proposed model are presented.","PeriodicalId":363625,"journal":{"name":"2008 5th IFIP International Conference on Wireless and Optical Communications Networks (WOCN '08)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115408437","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}
引用次数: 58
Context awareness framework based on contextual graph 基于上下文图的上下文感知框架
2008 5th IFIP International Conference on Wireless and Optical Communications Networks (WOCN '08) Pub Date : 2008-05-05 DOI: 10.1109/WOCN.2008.4542542
Tam V. Nguyen, Wontaek Lim, H. A. Nguyen, Deokjai Choi
{"title":"Context awareness framework based on contextual graph","authors":"Tam V. Nguyen, Wontaek Lim, H. A. Nguyen, Deokjai Choi","doi":"10.1109/WOCN.2008.4542542","DOIUrl":"https://doi.org/10.1109/WOCN.2008.4542542","url":null,"abstract":"Nowadays computing becomes increasingly mobile and pervasive. One of the important steps in pervasive computing is context-awareness. Context-aware pervasive systems rely on information about the context and user preferences to adapt their behavior. However, context-aware applications do not always behave as user's desire, and can cause users to feel dissatisfied with unexpected actions. To solve these problems, context-aware systems must provide mechanisms to adapt automatically when the context changes significantly. The interesting characteristic of context is its own behaviors which depend on various aspects of the surrounding contexts. This paper uses contextual graphs to solve the problem \"the mutual relationships among the contexts\". We describe the most relevant work in this area, as well as ongoing research on developing context-aware system for ubiquitous computing based on contextual graph. The usage of contextual graph in context- awareness is expected to make it effective for developers to develop various applications with the need of context reasoning.","PeriodicalId":363625,"journal":{"name":"2008 5th IFIP International Conference on Wireless and Optical Communications Networks (WOCN '08)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116495296","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}
引用次数: 7
Throughput improvement for cell-edge users using selective cooperation in cellular networks 利用蜂窝网络中的选择性合作提高蜂窝边缘用户的吞吐量
2008 5th IFIP International Conference on Wireless and Optical Communications Networks (WOCN '08) Pub Date : 2008-05-05 DOI: 10.1109/WOCN.2008.4542516
M. R. Ramesh Kumar, S. Bhashyam, D. Jalihal
{"title":"Throughput improvement for cell-edge users using selective cooperation in cellular networks","authors":"M. R. Ramesh Kumar, S. Bhashyam, D. Jalihal","doi":"10.1109/WOCN.2008.4542516","DOIUrl":"https://doi.org/10.1109/WOCN.2008.4542516","url":null,"abstract":"Cooperative transmission schemes are used in wireless networks to improve the spectral efficiency. In a multi-cell environment, inter-cell interference degrades the performance of wireless systems. In this paper, we study the downlink capacity of edge users in a cellular network and see whether base station cooperation improves the spectral efficiency. The base-stations coordinate their transmission to the two cell-edge users in order to improve their Signal-to-interference-noise ratio (SINR) and throughput. Selective Cooperation, where the selection criteria is based on throughput, is proposed. The capacity achieved through Cooperation is shared equally among the cell-edge users. Results show that, the proposed hybrid scheme, provides a better result compared to full-time cooperation. Finally, an example from UMTS is presented.","PeriodicalId":363625,"journal":{"name":"2008 5th IFIP International Conference on Wireless and Optical Communications Networks (WOCN '08)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123395188","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}
引用次数: 18
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