Seminario "Plasmonic isolator for photonic integrated circuits and application to high fom spr transducers" por el Profesor Hiromasa Shimizu, (Tokyo University of Agriculture and Technology, Japan)
Octubre - 10. 2018 IMN, Sala de Seminarios, 12:00
(Texto en inglés)
The integration of different optical components on one substrate has many advantages. Similar to electronic devices, an integrated optical circuit will have a lower cost and better functionality. The length of an optical component is limited by the wavelength of light, the relatively long length of interaction between light and matter (e.g., the magneto-optical or electro-optical interaction), and the large minimal bending radius of an optical waveguide. Because of these limitations, only a few optical components can be integrated into one chip. In this talk, our recent studies of on-chip integration of a plasmonic isolator on a Si substrate and a hybrid isolator on an InP substrate are discussed. The key characteristics of the plasmonic isolator are reviewed and future prospects on photonic integrated circuits are discussed. Methods to enhance the magneto-optical figure of merit (FOM) and reduce the propagation loss of a surface plasmon are reviewed. Also, recent research towards highly sensitive surface plasmon resonance (SPR) transducers, are introduced based on the studies of plasmonic waveguides and isolators. We demonstrated novel SPR transducers with membrane structure for gas sensing application, and detected a figure of merit (FOM) of -1 to 1, that is, a relative variation in the reflected p-polarized light by modulating the resonance condition within the wedge membrane structure on the Au thin film.
Biography: Hiromasa Shimizu is an associate professor in the Department of Electrical and Electronic Engineering at the Tokyo University of Agriculture and Technology, Japan. He received his BSc degree in 1997 and his PhD degree in 2002, both in Electronic Engineering from the University of Tokyo. His research focuses on magneto-optics, waveguide optical isolator, photonic integrated circuits, and optical sensing applications. He is a member of the IEEE, the Japan Society of Applied Physics (JSAP), and the institute of Electronics, Information and Communication Engineers (IEICE). He received the 9th Young Scientist Award for the Presentation of an Excellent Paper at the JSAP fall meeting in 2000, the 2001 Young Scientist Award from the Magnetics Society of Japan, the Ribbon Award at 2004 Fall meeting of Material Research Society, and 2005 Japanese Journal of Applied Physics Award for the most promising young scientist. He has 148 publications in journals, and topic on plasmonic isolators was published in MRS Bulletin vol. 43, No.6 (2018), which was published online at https://doi.org/10.1557/mrs.2018.123.Hiromasa SHIMIZU (Dr. Eng.) Associate Professor Department of Electrical and Electronic Engineering, Tokyo University of Agriculture & Technology 2-24-16 Naka-cho, Koganei, Tokyo, 184-8588, Japan Phone/Fax: +81-42-388-7996 firstname.lastname@example.org http://web.tuat.ac.jp/~h-shmz/lab_index_eng.htm