Patent ID: 7292744

Claim:
An optoelectronic apparatus, which comprises an optical connection device, an electric circuit, and plural electric chips: said optical connection device comprising: a substrate; an optical waveguide provided in the substrate; plural optical connection ports provided in the optical waveguide and having a light output port and a light input port, wherein the light output port is for outputting light to the optical waveguide, and the light input port is for receiving light from the optical waveguide; and an arithmetic circuit for outputting from the light output port into the optical waveguide an optical signal coded so as to be decoded only at a side of the light input port to which a key for decoding is given, and for decoding selectively with the key the optical signal received at the light input port, wherein said plural electric chips are for operating said electric circuit, and the optical signal is transmitted and received between the electric chips through the optical connection ports and the arithmetic circuit, and wherein the optical signal for optical connection between plural electric chips is propagated to a specific region or an entirety of the optical waveguide to be receivable by one or more receiver electric chips other than an electric chip that codes and transmits, so that a desired optical signal is coded in a manner that satisfies a mutual orthogonal relation that enables plural electric chips to simultaneously transmit plural optical signals in a same optical waveguide, and to decode and be received only by an electric chip that is given a key for decoding to carry out optical code division multiplexing, based on a switching of a connection between the electric chip that codes and transmits and a said receiver electric chip.