To convert an optical packet signal constituted of a fast serial optical bit string to parallel optical bit strings to read a prescribe optical bit string.
An optical bit string discrimination device is provided with an optical branching device which branches the optical packet signal to an optical path 1 and an optical path 2, a timing generator which takes the optical packet signal branched to the optical path 2 as the input and outputs an electric control signal at the timing corresponding to the input, a sweep wavelength light generation means which takes the electric control signal as the input and generates sweep wavelength light of which the wavelength is changed with time at the bit rate of the optical packet signal, a wavelength conversion means which takes a prescribed optical bit string of the optical packet signal branched to the optical path 1 and the sweep wavelength light as the input at the same timing and converts the wavelength of each optical bit of the prescribed optical bit string to each wavelength of the sweep wavelength light to output it, an optical demultiplexer which demultiplexes the prescribed optical bit string subjected to wavelength conversion by optical bits to respective wavelengths, and optical a receivers which convert optical bits of respective wavelengths demultiplexed by the optical demultiplexer to electric signals and correspond to respective optical bits.
MORIWAKI SETSU
SAKAMOTO TAKASHI
SAKAI YOSHIHISA
NOGUCHI KAZUTO
MATSUOKA SHIGETO
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