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随着光通信技术的快速发展，光纤传输的容量呈几何式增长，对密集波分复用（DWDM）网络系统的管理和调度灵活性要求也在不断提高。波长可调模块可以满足网络管理灵活的要求，在波分复用（WDM）系统和5G网络中将会有广泛应用。而作为模块内的核心元件，可调激光器的研究就显得尤为重要。文章介绍了一种可调激光器和硅光调制器芯片混合集成封装技术，利用一种胶合标准具的设计进行波长控制，节省了半导体制冷器，减小了封装尺寸。其制作的可调激光器件能满足ITU-96通道的波长输出，且满足100 G BASE-LR4国际标准的工作眼图要求。

针对硅光芯片在应用中由于其模场较小存在耦合损耗较大的问题，文章利用一款硅光调制器芯片对其与单模光纤的耦合效率进行了研究。首先对模场匹配理论进行了分析，随后对硅光芯片以及耦合用的单模光纤进行了模场测试，提出了一种提高耦合效率的低成本耦合方式。实验结果表明，该单模光纤与硅光芯片的耦合效率达到70%。利用该方案制作了光组件并进行了四阶脉冲幅度调制（PAM4）眼图测试，得到了较好的眼图。

可调谐激光器已经成为相干光传输系统中最重要的器件之一。文章基于现有的集成可调谐激光器模块,提出了一种新型的基于硅基光波导芯片实现器件高稳定性的小型化结构,基于该结构设计的微环可调谐激光器的外腔主要由一个半导体光放大器和两个透镜组成。针对器件进行了外置波锁分析和芯片的耦合分析,芯片与半导体光放大器之间的耦合采用双透镜和模斑转换器,因此大大提高了耦合效率,减小了腔内损耗,提高了输出功率。实验结果表明,该装置的输出功率可达14dBm,调谐范围可覆盖整个C波段。

硅基光互连技术是解决目前电互连制约瓶颈的有效手段,而实用化集成光源的制备对硅基芯片功耗的降低和尺寸的减小有着十分重要的意义。硅基集成激光器在过去的十多年间取得了一系列重要突破,其中III-V/Si混合集成激光器是近期最可能获得实际应用的方案之一。文章简要分析了硅基集成激光器的研究现状,重点介绍了III-V/Si混合集成激光器的研究进展,包括III-V/Si键合激光器和III-V/Si倒装焊激光器的发展和各自存在的问题,并预测了硅基集成激光器的发展方向。

Copyright of Study on Optical Communications / Guangtongxin Yanjiu is the property of Study on Optical Communications Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This study attempts to investigate the electronic journal reading behaviour of social scientists in Taiwan and Mainland China. The main purposes of the study are as follows: to explore the importance of e-journals amongst social scientists’ research; to explore the e-journal reading behaviour of Taiwanese and Chinese social scientists; to unearth factors affecting e-journal article reading thereby allowing comparisons to be made between the e-journal reading behaviour of social scientists in Taiwan and Mainland China. Three surveys were carried out at ChengChi University in Taiwan, and Wuhan University and Nanjing University in Mainland China during 2012. The target population was social science faculty members and graduate students of the three universities. Three questionnaire surveys were conducted during January toApril 2012, with a total of 668 valid questionnaire responses collected. Analysis of reading e-journal critical incident articles showed that 46.7% were in Chinese and 53.3% in English. Each social scientist in Taiwan and Mainland China read on average 307 e-journal articles and spent about 380 hours annually reading e-journals; they read e-journals mainly for research purposes and the writing of papers. Information regarding the e-journal reading environments, reading methods, reading strategies and reading consequences of social scientists in Taiwan and Mainland China were collected and analysed. In this study four types of e-journal reading behaviour of social scientists in Taiwan and Mainland China are shown, namely; screen browsing; screen based-reading, print reading, and screen-based collocating reading. E-journal reading behavior of social scientists in Taiwan and Mainland China are studied and the study also illustrates some difference of e-journal reading behaviour between Taiwanese and Chinese social scientists. pp. 26-43

Copyright of Ordnance Industry Automation is the property of Editorial Board for Ordnance Industry Automation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Through digging into relevant historical materials of library science education in the University of Nanking, especially original materials such as the historical archives, this paper uses the methods of literature study and historical study, to review the history of library science education and explore the indigenization and innovation of the University of Nanking in aspects of education models, curriculum, teaching contents and methods, and textbook construction. It then analyzes the meaning of the indigenization and its enlightenment to modern library science education. [ABSTRACT FROM AUTHOR]

Liu Kwoh-Chuin's thoughts on library education have developed through the early, middle and late periods, forming a completed content system. The formation of Liu K woh-Chuin' s thoughts on library education is inseparable from his early social and educational background and his library practice activities, which can be summarized as a broad view of library education, a functional view of library education with a sense of family and country, a view of talent with both virtue and talent, a view of ~ teaching morality, a view of teaching with knowledge and practice, and a forward-looking view of discipline construction. The ideas of" social education", the idea of cultivating talents with both virtue and talent, and the teaching concept of combining theory and practice in library education of Liu Kwoh-Chuin are still of p~ great relevance to today's library educatio [ABSTRACT FROM AUTHOR]

Copyright of Study on Optical Communications / Guangtongxin Yanjiu is the property of Study on Optical Communications Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of East China University of Science & Technology is the property of Journal of East China University of Science & Technology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Before the implementation of outcrops of forward-looking engineering research works, the carrier of knowledge is word, which gives challenge to the protection of knowledge for individual or a group of individuals in terms of cross-major, cross-disciplinary and multi-teams cooperation. In this paper, we investigated and analyzed the literature related to plagiarism and acknowledgment, and put forward the idea of acknowledgment methods for such research results. Main findings: 1) attention should be paid to tell the contribution of finding and defining the problems; 2) plan in-advance the outcrops attribution for various specialized team, and further dynamically adjust the plan; 3) using modern techniques can help improve acknowledgement efficiency; 4) the development of high-efficient knowledge solidification mode help accelerate the circulation and growth of knowledge. [ABSTRACT FROM AUTHOR]