illustrated by a Sea Mouse
and narrated by:
Optoelectronics Group
Department of Physics
University of Bath
United Kingdom
| Organizer: Lasers and Electro-Optics Society (LEOS) |
| Title: Trapping Light in Holey Threads,
Perforated Films and Glass Sieves illustrated by a Sea Mouse and narrated by: |
| Philip Russell Optoelectronics Group Department of Physics University of Bath United Kingdom |
| Abstract: The hairs of the sea-mouse (marine worm, genus Aphrodita) are spectacularly iridescent, caused by their remarkable hexagonal close-packed photonic crystal microstructure. Photonic crystal fibre is similar in form - a thin thread of silica glass almost unlimited in length with a parallel array of microscopic air holes running along its length. Guiding cores are created by filling in or enlarging individual air holes, and several new guidance mechanisms have been demonstrated, including photonic bandgap confinement in a hollow core and an endlessly single-mode "sieve" waveguide. Thin films of high index dielectric perforated with arrays of holes (looking rather like salami slices of photonic crystal fibre) can act as efficient vertical cavity resonators and highly dispersive components for telecommunications. Periodic microstructuring can radically enhance the optical properties of mundane materials, and is leading to a whole range of promising new applications. |
| Biography: Philip Russell is Professor in the Department of Physics at the University of Bath, where he heads the Optoelectronics Group. Previously he has worked in universities and research laboratories across Europe and in the USA. He has 24 years experience (and over 300 publications) in many aspects of photonics and has helped pioneer a number of developments in fibre Bragg gratings, photonic band gap materials, acousto-optic fibre devices, nonlinear optics and periodically poled materials. He is the founding chair of the Optical Society of America's Topical Meeting Series on Bragg Gratings, Photosensitivity and Poling in Glass. He is a Fellow of the Optical Society of America and recently won its Joseph Fraunhofer Award/Robert M. Burley Prize for his invention of photonic crystal ("holey") fibre, first proposed in 1991. |
| Time and Location: Monday, February 19, 2001 11:00 a.m. University of Toronto, Galbraith Building, Room 120 The Galbraith building is located at 35 St. George Street Coffee and cookies will be served |
The Institute of Electrical and Electronics Engineers,
Toronto Section
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