EMBODYING EQUIPMENT AND ITS METHOD FOR ALL-OPTICAL NOR GATE USING GAIN SATURATION OF SEMICONDUCTOR OPTICAL AMPLIFIER

摘要

PROBLEM TO BE SOLVED: To provide embodying equipment and its method for embodying, specially, a 10 Gbits/s all-optical NOR logic element in a logic element by using a light signal transmitted from an arbitrary point in an optical circuit like optical computing for a pump signal and an irradiation signal.;SOLUTION: An A+B signal which is the total of input signals of an input signal pattern (A) of 1100 and an input pattern (B) of 0110 is used for the pump signal (1110), and a clock signal is generated with the input signal pattern (A) of 1100 and used for the irradiation signal (1111), which is made incident on a semiconductor optical amplifier (SOA) together with the pump signal at the same time to obtain Boolean logical expressions (A+B). Consequently, a NOR logic element is embodied by an XGM (Cross Gain Modulation) method using a gain saturation characteristic of the semiconductor optical amplifier, so the structure is simplified and all-optical logic elements for other functions are constituted by the same method. Consequently, the all-optical logic element performs an important duty for all-optical circuit and all-optical system embodiments.;COPYRIGHT: (C)2005,JPO&NCIPI