1. A nano plasmonic integrated circuit module, comprising: an input coupling unit for focusing optical signals input through an optical waveguide, converting the focused optical signals into surface plasmon polariton signals, and outputting the surface plasmon polariton signals; an input focusing unit for focusing the output surface plasmon polariton signals to a nano size; a surface plasmon polariton waveguide for transmitting the focused surface plasmon polariton signals; a signal sensing/processing unit for sensing and processing the surface plasmon polariton signals transmitted through the surface plasmon polariton waveguide; an output defocusing unit for defocusing the surface plasmon polariton signals; and an output coupling unit for converting the defocused surface plasmon polariton signals into optical signals.