Patent ID: 7397977
Filing Date: 2008-07-08
Classification: G02B

Abstract:
1. A wave transmission medium for propagating light from an input port to an output port, the input port being defined as any one of a plurality of ports, the output port being defined as at least one of the rest of the plurality of ports, the light at the input port being defined as input-light, and the light at the output port being defined as output-light, each port being defined as a location of a circuit at which a cross section having desired optical input/output is given, said wave transmission medium comprising: a spatial refractive index distribution determined such that the input-light launched into the input port propagates through the wave transmission medium with scattered multiple times and is then outputted from the output port as the output-light; wherein the spatial refractive index distribution is designated by each refractive index of pixels defined by a mesh, and said each refractive index of the pixels is determined by repeating calculations until a phase difference between a forward propagation of an input field of the input-light and a reverse propagation of an output field of the output-light becomes less than a desired value at each pixel.