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| 1 | Integrated(de)multiplexer for orbital angular momentum fiber communication显示文摘The quickly increasing data transfer load requires an urgent revolution in current optical communication. Orbital angular momentum(OAM) multiplexing is a potential candidate with its ability to considerably enhance the capacity of communication. However, the lack of a compact, efficient, and integrated OAM(de)multiplexer prevents it from being widely applied. By attaching vortex gratings onto the facets of a few-mode fiber, we demonstrate an integrated fiber-based OAM(de)multiplexer. A vortex grating fabricated on the fiber facet enables the direct multiplexing of OAM states at one port and the demultiplexing of OAM states at the other port. The measured bit error rate of the carrier signal after propagating through a 5-km few-mode fiber confirms the validity and effectiveness of the proposed approach. The scheme offers advantages in future high-capacity OAM communication based on optical fiber. | ZHENWEI XIE SHECHENG GAO TING LEI SHENGFEI FENG YAN ZHANG FAN LI JIANBO ZHANG ZHAOHUI LI XIAOCONG YUAN | 2018 | Photonics Research2018，6，7： | 13 |
| 2 | Pool-Forming Stages and Enrichment Models of Medium- to High-Rank Coalbed Methane显示文摘coalbed 甲烷的形成水池的机制有它的自己的特征。在这份报纸,基于在中国的典型的忍受煤的盆上的研究,这被指出媒介的水库形成 -- 到高等级的 coalbed,甲烷经历了三个批评阶段:coalbed 甲烷产生和吸附阶段和保藏舞台。地区性的构造进化,水动力学条件和封上的条件在 coalbed 甲烷解吸附作用散开和保藏的阶段起重要作用。中等 -- 到高等级的 coalbed,甲烷有丰富模型的三种类型,也就是说最有利,相对有利,并且相反的丰富模型。 | SONG Yan ZHAO Mengjun HONG Feng LIU Shaobo QIN Shengfei WANG Hongyan | 2010 | Acta Geologica Sinica(English Edition)2010，84，6： | 4 |
| 3 | Abnormal overpressure distribution and natural gas accumulation in foreland basins, Western China显示文摘Abnormal overpressure occurs in the forelandbasins of Kuqa, South Junggar and West Sichuan in China.The pressure coefficients are high. Overpressure exists inwide areas and various strata. The layers of overpressurehave a very close relationship with lithology, and the area ofoverpressure is controlled by the piedmont depression. Themechanisms of overpressure formation in the Kuqa andSouth Junggar Depression include disequilibrium compac-tion and tectonic compression; the importance of these twofactors varies in different basins and in different stages of thesame basin. Different models of gas accumulation are estab-lished to explain the relationship between overpressure dis-tribution and gas pool formation, and the influence of over-pressure on the gas pools. These models include: (i) theviolent tectonic movement leads to the pool formation inoverpressure belt (Kela-2 gas field in Kuqa); (ii) the pres-sure releases at shallow part and the gas pool forms in latetime (Hutubi gas field in southern Junggar Basin); (iii)through the pressure transfer the gas migrates and accumu-lates (Xinchang gas field in Western Sichuan Basin). | SONG Yan XIA Xinyu HONG Feng QIN Shengfei FU Guoyou | 2002 | Chinese Science Bulletin2002，47，S1： | 3 |
| 4 | The key stage and moment of coalbed gas reservior evolution in the Qinshui Basin,China显示文摘The evolution of coalbed gas reservoir is characterized by coalbed gas geochemistry and gas content. On the basis of burial history and thermal history, the forming process of coalbed gas reservoir and the gas accumulative history in the Qinshui Basin are discussed in this paper. The difference of the thermal history, geochemistry characteristic, and gas accumulative history between Yangcheng and Huozhou areas shows that the formation of coalbed gas reservoir in the Qinshui Basin is controlled by the geological process in the critical stage and the critical moment. The components and isotopes of coalbed methane are determined by the stage at which the coal maturation reaches its maximum rank. The coalbed methane accumulative history is related to the temperature and pressure of the coal burial history, because the coalbed gas is mainly in adsorptive state. It is stated that the gas content in the coal seam is controlled by the moment when the coal seam is uplifted to the shallowest position. | ZHAO Mengjun SONG Yan SU Xianbo LIU Shaobo QIN Shengfei HONG Feng LIN Xiaoying | 2005 | Chinese Science Bulletin2005，50，S1： | 2 |
| 5 | Study on process and model of CBM dissipating显示文摘Coal Bed Methane(CBM) occurs in coal seams in the states of adsorption gas, free gas and water-dissolved gas. Its dissipating starts with desorption, and then it dissipates outwards in the states of free gas and water-dissolved gas. The dissipating approach is classified to three patterns: Free gas in pores dissipates through the cover rocks; hydrocarbon molecules in the cap-rocks and reservoir diffuse because of concentration gradient; gas dissolving in water is directly taken away by water. According to the controlling factors of CBM conservation and considering the cover rocks, soleplate, hydrological region identification and dissipating theory, three geological models of CBM dissipating are built: closed system model, lateral hydrological closed model and open system model. | Feng Hong Yan Song Zhenhong Chen Mengjun Zhao Shaobo Liu Shengfei Qin Guoyou Fu | 2005 | Chinese Science Bulletin2005，50，S1： | 1 |
| 6 | Poly(2,5-benzimidazole)/TriSilanolPhenyl POSS Composite Membranes for Intermediate Temperature PEM Fuel Cells显示文摘Novel organic-inorganic composites were in-situ synthesized by using TriSilanolPhenyl polyhedral oligomeric silsesquioxane(SO-POSS) as fillers and poly(2,5-benzimidazole)(ABPBI) as polymer matrix. The uniformly dispersed 3% SO-POSS particles in ABPBI matrix increased the thermal stability of the composite membranes. It was found that both the water and H_3PO_4 uptakes were increased significantly with the addition of SO-POSS due to the formation of hydrogen bonds between the POSS and H_2O/H_3PO_4, which played a critical role in the improvement of the conductivity of the composite membranes at temperature over 100 ℃. Proton conductivities of H_3PO_4 doped with 3 wt% SO-POSS contained ABPBI membranes increased with the increase of H_3PO_4 absorbance, reaching the maximum proton conductivity of 2.55 × 10^(-3) S·cm^(-1) at 160 ℃, indicating that the ABPBI/SO-POSS composite membrane could be a promising candidate for mid-temperature PEMFCs. | 刘清亭 NI Na SUN Quan WU Xiaoxue BAO Xujin FAN Zhang ZHANG Rong HU Shengfei Zhao Feng LI Xiao | 2018 | Journal of Wuhan University of Technology(Materials Science)2018，33，1： | 1 |
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