Patent ID: 8335408
Filing Date: 2012-12-18
Classification: G02B,H04B

Abstract:
1. A signal processing apparatus comprising: an optical waveguide having a light input output surface formed on an outer circumference of an optical guide unit through which light is transmitted where the light input from an arbitrary position of the input output surface is output in an entire circumference direction at a level in accordance with a positional relation with the input location; a master substrate arranged on an outer circumference of the optical waveguide and provided with a light output unit for converting an electric signal into light to be output and a light input unit for converting the input light into the electric signal; and a single or a plurality of slave substrates arranged on any of a plurality of mounting locations at different positions along the outer circumference of the optical waveguide and provided with a light output unit for converting an electric signal into light to be output and a light input unit for converting the input light into the electric signal, wherein the master substrate recognizes the mounted positions and the number of the slave substrates from a level of the light input to the light input unit of the master substrate and transmitted through the optical waveguide in accordance with the arrangement of the slave substrates while the light is output from the light output units of all the slave substrates arranged on the outer circumference of the optical waveguide.