东京大学电子工程系邹卫文博士学术报告

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    邹卫文(Zou Weiwen),  20027毕业上海交通大学物理系获理学学士学位,同年9月直升为该校物理系光学专业硕士研究生, 20052毕业获理学硕士学位,硕士学习的20034月至20043月间赴日本国立气通信大学电子工程系交换留学20054月获日本吉田育英会全额奖学金资助赴东京大学电子工程系留学,20083月毕业获工学博士学位。博士期间,荣获“2007年度 国家优秀自费留学生奖学金20084月至20098月于东京大学电子工程系从事博士后研究工作,任特别研究员。20098月至今就职于东京大学电子工程系任特别助教。

 自2005年来,一直从事光纤中的声波解析和设计,分布式光神经网络和其温度和应变同时测量等方面研究工作。首次提出基于保偏光纤中受激布里渊现象产生动态光栅的概念,并利用此概念成功分离出光纤中的温度和应变两个参量,为光神经网络应用于智能结构和智能材料提供了坚定的理论和技术保障。迄今在国际权威期刊和会议上以第一作者身份共发表近30篇论文,所发表的论文共被SCI他人引用数十次。

       现为IEEE,OSA及其日本电子通信情报学会IEICE会员。迄今受邀为Optics Letters (OL), Optics Express (OE), IEEE Photonics Technology Letters (PTL), Applied Optics (AO), Progress in Electromagnetic Research (PIER), Optics Communication, Japan Journal of Applied Physics (JJAP)等国际期刊担任论文审稿工作。

 

Talk 

Title: Fiber-Optic Brillouin-Based Discriminative Sensing of Strain and Temperature

Abstract:  Fiber-optic distributed sensing systems based on Brillouin scattering have been regarded as powerful tools to monitor distributed strain or temperature in smart materials and smart structures.  So far, different techniques (i.e. time-domain and correlation-domain) are used to resolve the sensing location, while their sensing mechanisms are all based on the linear dependences of Brillouin frequency shift on strain and/or on temperature. This common mechanism results in a heavy trouble for any of above techniques in discriminating the response to strain from that to temperature by using a single piece of fiber. This presentation will demonstrate two individual methods to realize discriminative sensing of strain and temperature. One is based on multiple acoustic resonance peaks in a specially-designed optical fiber and the other on Brillouin-generated dynamic acoustic grating in a polarization maintaining optical fiber. Complete discrimination of strain and temperature using the latter method will be theoretically and experimentally demonstrated. Distributed discriminative sensing of strain and temperature based on correlation-domain continuous-wave technique will also be introduced.

报告时间:2009914日下午200

报告地点:行政楼208会议室



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