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2012 Photonics Global Conference (PGC)最新文献

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Magnetobiexciton in three layers graphene and its effects on graphene optical properties 三层石墨烯中的磁双激子及其对石墨烯光学性质的影响
2012 Photonics Global Conference (PGC) Pub Date : 2012-12-01 DOI: 10.1109/PGC.2012.6458006
V. Hoa, C. T. Anh, N. T. Lan, N. A. Viet
{"title":"Magnetobiexciton in three layers graphene and its effects on graphene optical properties","authors":"V. Hoa, C. T. Anh, N. T. Lan, N. A. Viet","doi":"10.1109/PGC.2012.6458006","DOIUrl":"https://doi.org/10.1109/PGC.2012.6458006","url":null,"abstract":"The optical properties of multilayer graphene could be controlled by layer distance, or by emerging the graphene in strong magnetic field. In the cadre of this paper, a strong magnetic field has been injected through a multilayer graphene, in which there are the presence of biexciton. There is no analytic solution for potential equation, an approximations using Morse potential has been proposed. The dependence of few first energy levels on magnetic field and graphene layer distance has been investigated.","PeriodicalId":158783,"journal":{"name":"2012 Photonics Global Conference (PGC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128846951","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
Azobenzene polymer waveguide for UV sensors 用于紫外传感器的偶氮苯聚合物波导
2012 Photonics Global Conference (PGC) Pub Date : 2012-12-01 DOI: 10.1109/PGC.2012.6458028
I. Song, Chan-Young Kim, A-Ram Han, Jong Su Yoo, S. Lee, Hyun-Kyoung Kim, T. Ahn
{"title":"Azobenzene polymer waveguide for UV sensors","authors":"I. Song, Chan-Young Kim, A-Ram Han, Jong Su Yoo, S. Lee, Hyun-Kyoung Kim, T. Ahn","doi":"10.1109/PGC.2012.6458028","DOIUrl":"https://doi.org/10.1109/PGC.2012.6458028","url":null,"abstract":"We propose a new azobenzene polymer waveguide for UV sensor applications. We analyzed the waveguide performance in terms of the optical loss, absorption spectrum, and UV-induced optical scattering. The developed UV-responsive waveguide can be applied to UV sensors (e.g., the polymer fiber Bragg grating sensor).","PeriodicalId":158783,"journal":{"name":"2012 Photonics Global Conference (PGC)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125381410","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
Reserch on picosecond passively Q-switched microchip laser 皮秒被动调q微芯片激光器的研究
2012 Photonics Global Conference (PGC) Pub Date : 2012-12-01 DOI: 10.1109/PGC.2012.6457948
T. Inoue, T. Koike, K. Tei, S. Yamaguchi, J. Enokidani, S. Sumida
{"title":"Reserch on picosecond passively Q-switched microchip laser","authors":"T. Inoue, T. Koike, K. Tei, S. Yamaguchi, J. Enokidani, S. Sumida","doi":"10.1109/PGC.2012.6457948","DOIUrl":"https://doi.org/10.1109/PGC.2012.6457948","url":null,"abstract":"Compact and simple pico second lasers are required in many applications like fine material processing. we have been developing a pulsed fiber laser which consist of a fiber amplifier system and a passively Q-switched microchip laser as a seed source. In this presentation, we report the test results of the passively Q-switched microchip laser. The pump source is a diode laser coupled to single mode fiber with the wavelength of 808 nm and the maximum power of 214 mW. The microchip is composed of a combination of gain medium and a saturable absorber, and we used two types of microchip. There are differences in the thickness of the gain medium and dopant ratio of neodymium. The gain medium is Nd:YVO4. The thickness are 100 μm with 3% neodymium doping and 300 μm with 2% neodymium doping. As a result, We obtained 6.1 mW laser output with 90 ps pulse width, 1.3 MHz repetition frequency at short gain medium. And the other one got 14 mW laser output power with 161ps pulse width, 1.4 MHz repetition frequency. The single longitudinal operation was achieved for both of them.","PeriodicalId":158783,"journal":{"name":"2012 Photonics Global Conference (PGC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121285922","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
Numerical fitting of Ionization coefficients for APDs based on ternary materials 基于三元材料的apd电离系数的数值拟合
2012 Photonics Global Conference (PGC) Pub Date : 2012-12-01 DOI: 10.1109/PGC.2012.6458101
M. Rabbani, D. Majumder, F. M. Mohammedy
{"title":"Numerical fitting of Ionization coefficients for APDs based on ternary materials","authors":"M. Rabbani, D. Majumder, F. M. Mohammedy","doi":"10.1109/PGC.2012.6458101","DOIUrl":"https://doi.org/10.1109/PGC.2012.6458101","url":null,"abstract":"The efficiency of the avalanche process in Avalanche photodiodes depends on the Ionization coefficients. Ionization coefficients are dependent on the band-structure of materials. Ionization coefficients at different temperatures and fields are predicted by an analytical formula proposed by Okuto and Crowell. In this work, we propose two different mean free paths in two different field regions. These mean free paths, taken as the fitting parameters, have been optimized at different temperatures for InxGa1-xSb (x=0.06, 0.10, 0.12, 0.18), AlxGa1-xSb (x=0.05, 0.10) and InxGa1-xAs (x=0.02) using Particle Swarm Optimization algorithm. The present values have been compared with previous values extracted from the formula proposed and significant improvements have been achieved.","PeriodicalId":158783,"journal":{"name":"2012 Photonics Global Conference (PGC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126292279","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
Hybrid photonic crystal fiber selectively infiltrated with liquid crystal 选择性渗透液晶的杂化光子晶体光纤
2012 Photonics Global Conference (PGC) Pub Date : 2012-12-01 DOI: 10.1109/PGC.2012.6458040
K. Milenko, T. Wolinski, P. Shum, D. Hu, Jun Long Lim, Wang Yixin
{"title":"Hybrid photonic crystal fiber selectively infiltrated with liquid crystal","authors":"K. Milenko, T. Wolinski, P. Shum, D. Hu, Jun Long Lim, Wang Yixin","doi":"10.1109/PGC.2012.6458040","DOIUrl":"https://doi.org/10.1109/PGC.2012.6458040","url":null,"abstract":"We present hybrid propagation in a photonic liquid crystal fiber (PLCF) fabricated by selective infiltration of photonic crystal fiber (PCF) air channels with a nematic liquid crystal (LC). Temperature tuning of the position of the photonic bandgaps is also demonstrated.","PeriodicalId":158783,"journal":{"name":"2012 Photonics Global Conference (PGC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126325714","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: 8
A CO detection system based on double fiber bragg gratings 基于双光纤光栅的一氧化碳检测系统
2012 Photonics Global Conference (PGC) Pub Date : 2012-12-01 DOI: 10.1109/PGC.2012.6457924
Shuhua Ma, Qiongchan Gu, Jiangtao Lv
{"title":"A CO detection system based on double fiber bragg gratings","authors":"Shuhua Ma, Qiongchan Gu, Jiangtao Lv","doi":"10.1109/PGC.2012.6457924","DOIUrl":"https://doi.org/10.1109/PGC.2012.6457924","url":null,"abstract":"CO is the main component of mine gas. It is flammable and explosive. It is very important to realize the real-time detection of CO gas. It concentrates to the safety of mining industry and personal safety. In this paper, a double optical fiber sensing system based on a set of differential absorption technique is designed according to the CO molecular spectral absorption characteristics. The light source is LED. Reentrant type absorption cell is used as the gas chamber. The wavelength modulation and narrow beam are obtained by the fiber grating and photoelectric diode. The differential absorption detection is realized by the application of fiber Bragg grating narrowband filter characteristics and the double optical path. It is shown by the experiment that the system has high feasibility and reliability. The high sensitive detection of CO gas can be readily achieved.","PeriodicalId":158783,"journal":{"name":"2012 Photonics Global Conference (PGC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124909761","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
Photoacoustic phasoscopy for tissue characterization 光声相镜用于组织表征
2012 Photonics Global Conference (PGC) Pub Date : 2012-12-01 DOI: 10.1109/PGC.2012.6458064
Fei Gao, Yuanjin Zheng, Xiaohua Feng, C. Ohl
{"title":"Photoacoustic phasoscopy for tissue characterization","authors":"Fei Gao, Yuanjin Zheng, Xiaohua Feng, C. Ohl","doi":"10.1109/PGC.2012.6458064","DOIUrl":"https://doi.org/10.1109/PGC.2012.6458064","url":null,"abstract":"In this paper, a novel method named photoacoustic `phasoscopy' (PAP) is proposed to collect both scattered photons and induced photoacoustic wave to build a photo-acoustic phase spectrum, rather than conventional frequency spectrum, for biological tissue characterization,. PAP provides phase contrast with enhanced sensitivity and robustness compared with pure optical or photoacoustic sensing only. Experimental result of characterizing three different kinds of biological tissues proves the feasibility of PAP for potential biomedical sensing and imaging applications.","PeriodicalId":158783,"journal":{"name":"2012 Photonics Global Conference (PGC)","volume":"50 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113999684","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 240 Gb/s self-coherent CO-OFDM transmission applying real-time receiption over 48 KM SSMF 240gb /s自相干CO-OFDM传输，实时接收48km SSMF
2012 Photonics Global Conference (PGC) Pub Date : 2012-12-01 DOI: 10.1109/PGC.2012.6458122
Xiao Xiao, Tao Zeng, Qi Yang, Jie Li, Yong Pan, Ming Luo, Daojun Xue, Shaohua Yu
{"title":"A 240 Gb/s self-coherent CO-OFDM transmission applying real-time receiption over 48 KM SSMF","authors":"Xiao Xiao, Tao Zeng, Qi Yang, Jie Li, Yong Pan, Ming Luo, Daojun Xue, Shaohua Yu","doi":"10.1109/PGC.2012.6458122","DOIUrl":"https://doi.org/10.1109/PGC.2012.6458122","url":null,"abstract":"We have implemented a real-time FPGA-based COOFDM receiver at 5.8 Gb/s. With a novel self coherent scheme the complexity of real-time receiver is reduced. The sub-band signal reception of 240 Gb/s multi-band CO-OFDM transmission over 44 km SSMF has been demonstrated using the real-time receiver with an error floor as low as 1.74×10-5.","PeriodicalId":158783,"journal":{"name":"2012 Photonics Global Conference (PGC)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131602485","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
Enhancing dynamic extinction ratio of a fiber-based seed source 提高纤维种子源的动态消光比
2012 Photonics Global Conference (PGC) Pub Date : 2012-12-01 DOI: 10.1109/PGC.2012.6457955
Y. Kamba, Y. Wada, K. Tei, J. Enokidani, S. Sumida
{"title":"Enhancing dynamic extinction ratio of a fiber-based seed source","authors":"Y. Kamba, Y. Wada, K. Tei, J. Enokidani, S. Sumida","doi":"10.1109/PGC.2012.6457955","DOIUrl":"https://doi.org/10.1109/PGC.2012.6457955","url":null,"abstract":"We report enhancing dynamic extinction ratio (DER) of a fiber-based seed source. The seed source consists of a waveguide Mach-Zenhder intensity modulator (MZIM) and a 1064 nm-wavelength continuous wave laser diode. The phase drift in MZIM is stabilized by a feed back bias control system. As a result we achieved a DER of 39 dB at 2 ns pulse duration and 200 kHz pulse repetition rate. The seed pulses were followed by an acoustic optical modulator (AOM) in order to enhance DER by a factor of 105 and amplified by the fiber amplifier with a factor of 2×104. We demonstrated the second harmonic generation (SHG) of the amplified pulses with a Periodically Poled Lithium Tantalate crystal (PPLT). As a result of DER enhancement a higher conversion efficiency of SHG was achieved when the AOM is working.","PeriodicalId":158783,"journal":{"name":"2012 Photonics Global Conference (PGC)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127625336","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
Dispersion-flattened transmission based on liquid-crystal-coated plasmonic subwavelength structures 基于液晶包覆等离子体亚波长结构的色散平坦传输
2012 Photonics Global Conference (PGC) Pub Date : 2012-12-01 DOI: 10.1109/PGC.2012.6457937
Y. Liu, E. Leong, Jinghua Teng, G. Si
{"title":"Dispersion-flattened transmission based on liquid-crystal-coated plasmonic subwavelength structures","authors":"Y. Liu, E. Leong, Jinghua Teng, G. Si","doi":"10.1109/PGC.2012.6457937","DOIUrl":"https://doi.org/10.1109/PGC.2012.6457937","url":null,"abstract":"Recently, noble metallic annular aperture arrays (AAAs) have drawn considerable attention due to their peculiar properties and great potential for ultracompact optical applications. AAAs have been experimentally confirmed to have much higher peak transmission than simple hole arrays with the same open area. Here, gold AAAs with overlapped apertures are reported. We show that different shapes of nanopillars can be formed by controlling the inner and outer radii, thus affecting the plasmonic properties of the nanostructures including both localized surface plasmon resonances (LSPRs) and surface plasmon polaritons (SPPs). By overlaying a layer of liquid crystals onto these plasmonic nanostructures, a pronounced optical transmission with a broad top-flat passband is observed. This unique property makes such a hybrid device potentially useful for broadband optical filters.","PeriodicalId":158783,"journal":{"name":"2012 Photonics Global Conference (PGC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133692048","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
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