Patent ID: 6263146
Filing Date: 2001-07-17
Classification: G06E

Abstract:
An apparatus for optically generating chaotic random numbers to obtain chaotic random numbers satisfying a chaotic dynamical system expressed by X(n+1)=F(X(n)), comprising:an optical signal splitting means for splitting light from a light source into a predetermined number of beams with identical optical power;optical chaotic signal generating means comprising a same number of interferometers as the beams, each having a pair of optical paths for receiving the beams from the optical signal splitting means, splitting each of the beams, interfering the splitted beams and outputting optical chaotic signals;optical path length difference data memory means for memorizing data on a difference between lengths of the pair of optical paths at portions thereof between splitting and interfering;optical output signal measuring means for measuring optical power of the optical chaotic signals output from the interferometers as chaotic random numbers; andoptical output signal memory means for memorizing measured optical power values of the optical chaotic signals expressed by a vector of a same number of dimensionally as the interferometers, with nonnegative real elements.