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2012 21st Annual Wireless and Optical Communications Conference (WOCC)最新文献

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Mid-infrared generation by difference frequency generation of CW fiber laser 连续波光纤激光器差频产生中红外
2012 21st Annual Wireless and Optical Communications Conference (WOCC) Pub Date : 2012-04-19 DOI: 10.1109/WOCC.2012.6198189
S. Shen, Yu-Chieh Lin, A. Kung, M. Chou
{"title":"Mid-infrared generation by difference frequency generation of CW fiber laser","authors":"S. Shen, Yu-Chieh Lin, A. Kung, M. Chou","doi":"10.1109/WOCC.2012.6198189","DOIUrl":"https://doi.org/10.1109/WOCC.2012.6198189","url":null,"abstract":"Periodically poled congruent lithium tantalite (PPCLT) and periodically poled congruent lithium niobate (PPCLN)-based quasi phase matched (QPM) difference frequency generation (DFG) conversion systems are developed for inclusion in a mid-IR spectrometer providing a wavelength tunable and efficient conversion solution. Using two continuous wave (CW) fiber lasers the conversion efficiency of DFG CLT chip is over 0.1%, while with an 8cm long DFG CLN chip is over 1%. This conversion is higher than any reported in the literature.","PeriodicalId":118220,"journal":{"name":"2012 21st Annual Wireless and Optical Communications Conference (WOCC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127036779","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
Slotted Aloha for cognitive radio users and its tagged user analysis Slotted Aloha为认知无线电用户和它的标签用户分析
2012 21st Annual Wireless and Optical Communications Conference (WOCC) Pub Date : 2012-04-19 DOI: 10.1109/WOCC.2012.6198140
Sanqing Hu, Yu-dong Yao, A. Sheikh
{"title":"Slotted Aloha for cognitive radio users and its tagged user analysis","authors":"Sanqing Hu, Yu-dong Yao, A. Sheikh","doi":"10.1109/WOCC.2012.6198140","DOIUrl":"https://doi.org/10.1109/WOCC.2012.6198140","url":null,"abstract":"Cognitive radio (CR) is a promising dynamic spectrum access technique to improve the utilization of the licensed spectrum. In this paper, we investigate the medium access control (MAC) protocol for CR networks and propose a cognitive MAC using slotted Aloha to enable CR users to access spectrum holes in a licensed frequency band. In order to avoid the high computational complexities of traditional Markovian analysis, we investigate the tagged user analysis (TUA) based on queuing theories in CR scenarios and use TUA to analyze the proposed cognitive MAC performance. The theoretical derivations based on TUA are presented and computer simulations are performed to evaluate the CR network performance as well as TUA accuracy. The network throughput, packet blocking probability, queue length, packet waiting time and response time are evaluated.","PeriodicalId":118220,"journal":{"name":"2012 21st Annual Wireless and Optical Communications Conference (WOCC)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131477427","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: 16
Collision aware topology control algorithm in wireless multihop networks 无线多跳网络中碰撞感知拓扑控制算法
2012 21st Annual Wireless and Optical Communications Conference (WOCC) Pub Date : 2012-04-19 DOI: 10.1109/WOCC.2012.6198182
M. Fereydooni, G. B. Eslamlu, M. Sabaei
{"title":"Collision aware topology control algorithm in wireless multihop networks","authors":"M. Fereydooni, G. B. Eslamlu, M. Sabaei","doi":"10.1109/WOCC.2012.6198182","DOIUrl":"https://doi.org/10.1109/WOCC.2012.6198182","url":null,"abstract":"Energy conservation and interference reduction are the two main goals of any topology control algorithm in wireless multi-hop networks, but impacts of traffic on interference have been largely ignored in almost all previous works. In this paper, we showed that traffic load has significant influence on energy consumption of network nodes and then we made a relation between traffic and interference using collision numbers. Then, we presented a distributed algorithm on topology control to address this challenge by considering collision numbers as a main factor in selection of links. This algorithm tries to improve initial topology to reduce collision numbers. Simulation results verified superiority of the proposed approach over a number of reported techniques in literature.","PeriodicalId":118220,"journal":{"name":"2012 21st Annual Wireless and Optical Communications Conference (WOCC)","volume":"335 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133500479","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
Time division duplex for preventing reflection interference in visible light communication 在可见光通信中防止反射干扰的时分双工
2012 21st Annual Wireless and Optical Communications Conference (WOCC) Pub Date : 2012-04-19 DOI: 10.1109/WOCC.2012.6198178
Y. Liu, C. Chow, C. Yeh
{"title":"Time division duplex for preventing reflection interference in visible light communication","authors":"Y. Liu, C. Chow, C. Yeh","doi":"10.1109/WOCC.2012.6198178","DOIUrl":"https://doi.org/10.1109/WOCC.2012.6198178","url":null,"abstract":"In this work, an experimental time division duplex system is presented to prevent interference in visible light communication. The 40-LED array and a single LED were used for downlink and uplink respectively. The interference of signal reflection on mirrors was discussed and removed using time division duplex. At the distance of 2 m, the data rate achieved is above 1Mbps with bit error rate below 2×10-5 in each of the direction.","PeriodicalId":118220,"journal":{"name":"2012 21st Annual Wireless and Optical Communications Conference (WOCC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125858370","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: 1
A novel coupler with high mode conversion efficiency for SMF and SOI single-mode waveguide coupling interface 一种用于SMF和SOI单模波导耦合接口的高模式转换效率的新型耦合器
2012 21st Annual Wireless and Optical Communications Conference (WOCC) Pub Date : 2012-04-19 DOI: 10.1109/WOCC.2012.6198166
C. L. Lee, L. K. Wang, C. Hsiao
{"title":"A novel coupler with high mode conversion efficiency for SMF and SOI single-mode waveguide coupling interface","authors":"C. L. Lee, L. K. Wang, C. Hsiao","doi":"10.1109/WOCC.2012.6198166","DOIUrl":"https://doi.org/10.1109/WOCC.2012.6198166","url":null,"abstract":"A multilayer mode converter (MMC) with large alignment tolerance and broadband operation as well as temperature independence is designed and fabricated to alienate the mode coupling loss between a standard single-mode fiber (SMF) and a 3-D SOI rib-type waveguide. Numerical results based on semi-vectorial beam propagation method are evaluated. This presented design has achieved about 75% coupling efficiency under the consideration of all coupling losses and transition ratio at the total length 2000um.","PeriodicalId":118220,"journal":{"name":"2012 21st Annual Wireless and Optical Communications Conference (WOCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129598222","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
Sum frequency generation of tunable CW fiber lasers 可调谐连续波光纤激光器的和频产生
2012 21st Annual Wireless and Optical Communications Conference (WOCC) Pub Date : 2012-04-19 DOI: 10.1109/WOCC.2012.6198188
S. Shen, Yu-Chieh Lin, Chung-Lin Yeh, M. Chou, A. Kung
{"title":"Sum frequency generation of tunable CW fiber lasers","authors":"S. Shen, Yu-Chieh Lin, Chung-Lin Yeh, M. Chou, A. Kung","doi":"10.1109/WOCC.2012.6198188","DOIUrl":"https://doi.org/10.1109/WOCC.2012.6198188","url":null,"abstract":"We achieved high conversion efficiency in quasi-phase-matched (QPM) sum frequency generation (SFG) of compact CW fiber lasers in periodically-poled 8mol% MgO-doped congruent LiTaO3 (MCLT) which technology of the crystal is still developing and periodically-poled 5mol% MgO-doped congruent LiNbO3 (MCLN) to obtain a tunable and visible light source. The conversion efficiency of SFG is over 10% in a MCLT chip and over 50% in a MCLN chip.","PeriodicalId":118220,"journal":{"name":"2012 21st Annual Wireless and Optical Communications Conference (WOCC)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123468050","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
Energy efficient clustering protocol for early warning system for miner's safety in coal mines 煤矿矿工安全预警系统的节能聚类协议
2012 21st Annual Wireless and Optical Communications Conference (WOCC) Pub Date : 2012-04-19 DOI: 10.1109/WOCC.2012.6198158
K. A. Menon, Deepa Maria, H. Thirugnanam
{"title":"Energy efficient clustering protocol for early warning system for miner's safety in coal mines","authors":"K. A. Menon, Deepa Maria, H. Thirugnanam","doi":"10.1109/WOCC.2012.6198158","DOIUrl":"https://doi.org/10.1109/WOCC.2012.6198158","url":null,"abstract":"Early detection of spontaneous explosions in coal mines can be made possible by monitoring the concentration of toxic gases such as Carbon monoxide (CO), Methane (CH4) and Hydrogen sulfide (H2S). Methane gas detection is very important for outburst prediction. In order to protect people and to avoid destructive sequence, it is necessary to design a system that can predict methane outburst in coal mines. In order to improve the reliability of gas monitoring in coal mine, we design a wireless sensor network (WSN) with gas sensors. The wireless sensor network is suitable for toxic gas monitoring in the severe environment of underground coal mines. Semiconductor type methane sensor having low power consumption and high sensitivity is used in the proposed system. The chain type clustering of low power sensor nodes along with data aggregation is devised to optimize the power consumption by the WSN. Additional feature of minimum data transmission and state transitions between listening, sleeping and transmitting modes in sensor nodes also guarantee power optimization.","PeriodicalId":118220,"journal":{"name":"2012 21st Annual Wireless and Optical Communications Conference (WOCC)","volume":"165 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124614516","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: 6
Recent advancements in fiber optic transmission 光纤传输的最新进展
2012 21st Annual Wireless and Optical Communications Conference (WOCC) Pub Date : 2012-04-19 DOI: 10.1109/WOCC.2012.6198173
Han Sun, Kuang-Tsan Wu, J. McNicol, M. Mitchell, V. Dangui, M. VanLeeuwen, J. Rahn, S. Grubb, R. Nagarajan, M. Ziari, S. Corzine, P. Evans, M. Kato, F. Kish, D. Welch
{"title":"Recent advancements in fiber optic transmission","authors":"Han Sun, Kuang-Tsan Wu, J. McNicol, M. Mitchell, V. Dangui, M. VanLeeuwen, J. Rahn, S. Grubb, R. Nagarajan, M. Ziari, S. Corzine, P. Evans, M. Kato, F. Kish, D. Welch","doi":"10.1109/WOCC.2012.6198173","DOIUrl":"https://doi.org/10.1109/WOCC.2012.6198173","url":null,"abstract":"Recent emergence of coherent optical modem has solved a number of difficult problems in optical transmission, resulting in 10x increase in capacity. The latest research of super-channels further increases spectral efficiency and network flexibility.","PeriodicalId":118220,"journal":{"name":"2012 21st Annual Wireless and Optical Communications Conference (WOCC)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122647958","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
Mach-Zehnder fiber interferometers based on liquid-filled photonic crystal fibers 基于充液光子晶体光纤的Mach-Zehnder光纤干涉仪
2012 21st Annual Wireless and Optical Communications Conference (WOCC) Pub Date : 2012-04-19 DOI: 10.1109/WOCC.2012.6198169
Li-Tai Hsiao, Chin-Ping Yu
{"title":"Mach-Zehnder fiber interferometers based on liquid-filled photonic crystal fibers","authors":"Li-Tai Hsiao, Chin-Ping Yu","doi":"10.1109/WOCC.2012.6198169","DOIUrl":"https://doi.org/10.1109/WOCC.2012.6198169","url":null,"abstract":"Mach-Zehnder fiber interferometers based on the liquid-filled photonic crystal fibers are demonstrated and applied in the sensing applications of surrounding refractive index and bending. The sensing sensitivities of the fabricated interferometers are measured and discussed.","PeriodicalId":118220,"journal":{"name":"2012 21st Annual Wireless and Optical Communications Conference (WOCC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134061374","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
AER: Adaptive energy efficient routing protocol for network of flying robots monitoring over disaster hit area AER:用于受灾地区飞行机器人监控网络的自适应节能路由协议
2012 21st Annual Wireless and Optical Communications Conference (WOCC) Pub Date : 2012-04-19 DOI: 10.1109/WOCC.2012.6198176
T. Abishek, K. Chithra, M. Ramesh
{"title":"AER: Adaptive energy efficient routing protocol for network of flying robots monitoring over disaster hit area","authors":"T. Abishek, K. Chithra, M. Ramesh","doi":"10.1109/WOCC.2012.6198176","DOIUrl":"https://doi.org/10.1109/WOCC.2012.6198176","url":null,"abstract":"In large scale disasters like earth quake it is necessary to undertake post disaster mitigation activities abruptly in order to for reduce damage and for early post-disaster rehabilitation and reconstruction. This paper proposes a design framework for an optimal control strategy to efficiently perform surveillance over a wide disaster hit area using a network of flying robots to determine the extent of damage promptly. The main focus of the paper is to develop an adaptive and energy efficient routing strategy with less power dissipation and delay compared to traditional routing algorithms. This protocol efficiently determines the best route by taking account of the residual energy, signal strength and various environmental factors. Simulation results show that the proposed routing scheme achieves much higher performance than the classical routing protocols.","PeriodicalId":118220,"journal":{"name":"2012 21st Annual Wireless and Optical Communications Conference (WOCC)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123993164","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
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