中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Conversion of MeOH and Toluene into Styrene and Ethylbenzene Using Composite Catalysts Containing MeOH Dehydrogenation Components 期刊论文  OAI收割
CHEMCATCHEM, 2019, 卷号: 11, 期号: 6, 页码: 1610-1614
作者:  
Han, Qiao;  Li, Peidong;  Zhang, Yanfei;  Lu, Peng;  Xu, Li
  |  收藏  |  浏览/下载:84/0  |  提交时间:2019/06/20
Design, synthesis, and characterization of a combined main-chain/side-chain liquid-crystalline polymer based on ethyl cellulose 期刊论文  OAI收割
CELLULOSE, 2010, 卷号: 17, 期号: 3, 页码: 547-558
作者:  
Hu, Tianhui;  Xie, Helou;  Xiao, Jianbo;  Zhang, Hailiang;  Chen, Erqiang
  |  收藏  |  浏览/下载:19/0  |  提交时间:2019/04/09
Theoretical analysis of emission characteristics of second-order distributed feedback semiconductor lasers (EI CONFERENCE) 会议论文  OAI收割
Semiconductor Lasers and Applications IV, October 18, 2010 - October 19, 2010, Beijing, China
作者:  
Liu Y.;  Liu Y.;  Qin L.;  Liu Y.;  Wang L.
收藏  |  浏览/下载:28/0  |  提交时间:2013/03/25
Based on the modified coupled-wave theory  the emission characteristics  including threshold gain  photon density distribution in the cavity  and external differential quantum efficiency for second-order DFB lasers are investigated. Numerical simulation results show that for given device structure with wavelength of 1.55 m  the feedback coupling coefficient and the surface radiation coupling coefficient of the second-order grating have great influence on the emission characteristics of the device. By choosing different duty cycles of the grating  we can change the two coupling coefficients  which affect the emission characteristics. For an overall consideration  an optimal duty cycle of 0.43 is chosen. The optimized results show that the device works without degeneracy modes and spatial burning hole. Besides  the side-mode suppress ratio (SMSR) and external differential quantum efficiency reach as high as 42 dB and 47%  respectively. 2010 SPIE.  
Improving the optical profile of electroabsorption modulator using single-sided large optical cavity structure 期刊论文  iSwitch采集
Acta physica sinica, 2007, 卷号: 56, 期号: 5, 页码: 2751-2755
作者:  
Yang Hua;  Zhu Hong-Liang;  Pan Jiao-Qing;  Feng Wen;  Xie Hong-Yun
收藏  |  浏览/下载:18/0  |  提交时间:2019/05/12
双包层光纤侧面耦合器 期刊论文  OAI收割
中国激光, 2005, 卷号: 32, 期号: 7, 页码: 953, 955
吴中林; 楼祺洪; 董景星; 魏运荣
收藏  |  浏览/下载:1251/103  |  提交时间:2009/09/18