Controlling light propagation in multimode fibers

A multimode optical fiber subjected to random mode and polarization mixing represents a complex photonic system with strong coupling of spatial, temporal, spectral and polarization degrees of freedom. By exploiting such coupling, we demonstrate a full control of the temporal shape and polarization state of light transmitted through a multimode fiber by adjusting the spatial profile of incident field. Furthermore, we show that a multi-mode fiber can function as a high-resolution, low-loss spectrometer. The frequency-dependent speckle patterns are used for spectrum recovery. We have made a multimode fiber spectrometer with ultra-fine resolution, and applied it to optical frequency comb spectroscopy.
This workshop will be host by Prof Hui Cao  - the John C. Malone Professor of Applied Physics and of Physics, and a professor of Electrical Engineering at Yale University. She received her Ph.D. degree in Applied Physics from Stanford University in 1997.  Prior to joining the Yale faculty in 2008, she was on the faculty of Northwestern University from 1997 to 2007.  Her technical interests and activities are in the areas of mesoscopic physics, complex photonic materials and devices, nanophotonics, and biophotonics. She authored or co-authored one monograph, twelve book-chapters, seven review articles and 250 journal papers. She is a Fellow of the APS, OSA, AAAS and IEEE.