Abstract: The present invention is in the field of a geometrically and spectrally resolved albedometer for a PV-module, a method of determining characteristics of reflected light, a method of optimizing reflected light performance of a solar cell, and a computer program for geometrically and spectrally resolving light.

Abstract: The present invention is in the field of a geometrically and spectrally resolved albedometer for a PV-module, a method of determining characteristics of reflected light, a method of optimizing reflected light performance of a solar cell, and a computer program for geometrically and spectrally resolving light.

Abstract: An integrated optical structure includes at least one layer containing an optical coupling element which defines a free light propagation region, at least one input optical waveguide and a network of optical waveguides, which are disposed in relation to one another such that the optical wave exiting the output end of the input optical waveguide reaches the input ends of the optical waveguides forming the network, via the optical coupling element. In an area located at a distance from, and frontally to, the aforementioned output end of the input optical waveguide, the optical coupling element comprises optical transfer or transformation elements which are used to diminish the amplitude and/or modify the phase and/or partially stop the propagation of the optical wave coming from the output of the input optical waveguide before it reaches the inputs of the optical waveguides of the network.

Abstract: A dispersive optical waveguide device comprising an array of curved silicon rib waveguides providing optical paths in parallel between a first optical coupler at one end of the array and a second optical coupler at an opposite end of the array. The ends of the array waveguides adjacent to the second coupler are distributed around a first arcuate edge of the second coupler forming part of a first circle. A plurality of connecting waveguides terminating at a second arcuate edge of the second coupler face the first arcuate edge of the second coupler. The second arcuate edge forms part of a second circle having a radius of curvature which is half the radius of curvature of the first circle and has its perimeter coincident with the perimeter of the first circle adjacent the ends of the array waveguides.

Abstract: A method of fabricating an integrated optical device comprising an optically conductive layer (6) separated from a substrate (2) by an optical confinement layer (3) comprising forming the device by bonding two separate parts (1, 4) together at an interface (4A) therebetween and forming a first feature (5) at the interface (4A) by processing at least one (4) of the two parts before the two parts (1,4) are bonded together. The method is particularly applicable to fabricating devices in silicon-on-insulator with the feature (5) located away from the outer surface thereof.