Eggleton, Benjamin JTa'eed, Vahid GLuther-Davies, Barry2015-12-100731-1230http://hdl.handle.net/1885/39586By the 1990s, the only way to expand the band width of optical systems was to increase the capacity of transmission systems. But the introduction of wavelength multiplexing (WDM), researchers begun to look into processing signals optically. Thereby, moreKeywords: Chalcogenide glass; Nonlinear absorption; Optoelectronic conversion; Ultrafast nonlinear response; Chalcogenides; Glass; Light transmission; Optical fibers; Optical signal processing; Planar waveguides; Wavelength division multiplexing; Optical communicat20072015-12-09