The present invention provides a computer and a method of sending security information for authentication, which relate to transmission of data information in computers. Also disclosed are components incorporating superconducting tapes, methods for manufacturing same, and methods for using same. A composition having silicon and an organic compound having a char yield of at least 60% by weight or a thermoset made from the organic compound. The recording of the output value occurs for a maximum time of up to 300 seconds after starting a cooking process, advantageously 60 to 120 seconds, and then said recording and analysis is terminated. The gain material may emit radiation having a wavelength within a photonic bandgap of the photonic crystal and corresponding to an allowable mode of the waveguide.