Rethinking Optical Fiber : New Demands, Old Materials
Mercredi 16 octobre 2013
à 11h en salle C. Brot
Abstract : From a materials perspective optical fibers are victims of their own success. The advent of the laser 50 years ago, coupled with an insatiable demand for information enabled by light-based communications, ushered in a golden age of glass science and engineering. It is somewhat ironic that the staggering ubiquity of information today, which is carried globally and near instantaneously via optical fibers, is enabled largely by one material – silica – into which only a few components are added. The richness of the periodic table has largely been forgotten. The purpose of this talk is to rethink the materials that can be used to make commercially-relevant optical fibers and describe the extraordinary properties, with stimulated Brillouin scattering (SBS) being the primary exemplar, of fibers made from otherwise ordinary materials. In particular, this talk focuses on the use of the molten core approach to optical fiber fabrication and the novel yet practical fibers that can be produced. The talk is purposely provocative and aims to reassert the centrality (and simplicity and beauty) of materials science as the best approach to meet future challenges for high performance optical fibers.
Bio : Dr. John Ballato is a professor of materials science and engineering (MSE) at Clemson University (Clemson, SC USA) where he also directs the Center for Optical Materials Science and Engineering Technologies (COMSET). Previously, Dr. Ballato served as Clemson’s Associate Vice President for Research and Economic Development and as interim Vice President for Research. He earned a B.S. in Ceramic Science and Engineering (1993) and the Ph.D. in Ceramic and Materials Engineering (1997) from Rutgers, The State University of New Jersey. Dr. Ballato has published more than 250 archival scientific papers, holds 25 U.S. and foreign patents, has given in excess of 150 invited lectures/colloquia, and has co-organized 60 national and international conferences and symposia. Among other honors, he is a Fellow of the Optical Society of America (OSA), the International Society of Optical Engineering (SPIE), and the American Ceramic Society (ACerS). He has been a Principal Investigator on more than $40 million worth of sponsored programs, gifts and contracts. He is an Associate Editor of the Journal of the American Ceramic Society, Topical Editor for Optics Letters and is an active participant on the “Optoelectronic Glasses” technical committee for the International Commission on Glass (ICG).
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