Nanostructures of noble metal materials have been used in organic solar cells for enhancement of performance and light trapping. In this study, we have introduced branched silver cauliflower-like nanopatterns as sub-wavelength structured metal grating in organic solar cells. Self-assembled fabrication process of branched nanopatterns was carried out on a bio-template of cicada wing nanonipple a...

222 Abstract— An alternate routing can improve the blocking performance of an optical network by providing multiple possible paths between source and destination nodes. Wavelength conversion can also improve the blocking performance of an optical network by allowing a connection to use different wavelengths along its route. But wavelength conversion scheme is not an economical proposition. We p...

This paper proposes optical wavelength division multiplexed (WDM) networks with limited wavelength conversion that can eficiently support lightpaths (connections) between nodes. Each lightpath follows a route in the network and must be assigned a channel along each link in its route. The load A , , , of a set of lightpath requests is the maximum over al l links of the number of lightpaths that ...

In this thesis, all-optical processing for future optical networks is studied by means of parametric processes in optical fibers. Parametric processes are nonlinear effects which arise in optical fibers when high-powered waves are properly placed at specific spectral positions. The properties of parametric processes are defined by the optical fiber characteristics, the power and the wavelength ...