时间:   2013年11月5日（周二）晚上18：00—19：30

地点:   宝山校区东校区通信楼T516

讲座:   离散分布式传感

演讲者：Moshe Tur教授, 以色列特拉维夫大学

演讲者简介：Moshe Tur received the B.Sc. in Mathematics and Physics, from the Hebrew University, Jerusalem, Israel (1969), the M.Sc. degree in Applied Physics from the Weizmann Institute of Science, Rehovot, Israel (1973), and his Ph.D. from Tel-Aviv University, Tel-Aviv, Israel (1981). He is presently the Gordon Professor of Electrical Engineering at the School of Electrical Engineering of Tel-Aviv University, Tel-Aviv, Israel, where he has established a fiber-optic sensing and communication laboratory. He authored or co-authored more than 350 journal and conference technical papers with emphasis on fiber-optic sensing (with current emphasis on Structural health Monitoring, using fiber Bragg gratings and the Brillouin effect), polarization mode dispersion, microwave photonics, and advanced fiber-optic communication systems. Prof. Tur has strong international relations, including summer visits to: Stanford University, BellCore Laboratories, University of Strathclyde in Glasgow, Swiss Institute of Technology, Communication Research Laboratory of the Japanese Ministry of Post and Telecommunications, AT&T Research Laboratories, the University of Southern California. Prof. Tur is a Fellow of both the IEEE and the Optical Society of America.

讲座摘要(Abstract)：Unquestionably, optical fiber sensors have come of age. They can be broadly divided into discrete sensors, which may be optionally multiplexed, and distributed sensor, where the fiber itself senses the environment in a continuous way along the length of the fiber, which may reach tens of kilometers. The talk will first mention several types of discrete sensors, including intensity (temperature), evanescent, interferometric (hydrophones and Sagnac) and polarimetric (current) –based sensors. Special attention will be devoted to the Fiber Bragg grating sensor and its interrogation. We'll then move to distributed sensing of strain and temperature using the Rayleigh, Raman and Brillouin effects. Their physical principles will be described, as well as modern interrogation methods, including dynamic performance. The interrogation of optical fibers with continuous fiber Bragg gratings will be mentioned as well. Noise, nonlinearities and a few more parasitic effects will be described. Finally, a few open issues will be presented for the Chinese scientists of the future to solve.

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