Patent ID: 11906876
Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. A full binary logic implementation method of a straight waveguide phase change all-photonic Boolean logic device according to claim 1, comprising:
presetting a detection signal to detect that the two phase change functional units are both in the amorphous state, wherein a logic value output by the detection signal after reading the two phase change functional units is 1, and logic values output in other cases are all 0;
presetting a three-step operation to respectively input the corresponding logic values into the two phase change functional units; presetting operation manners of 16 types of binary Boolean logic operations to respectively input the logic values into the two phase change functional units with the three-step operation, and then input the detection signal into one side of the straight waveguide to read states of the two phase change functional units through detecting an intensity of a signal output from the other side of the straight waveguide, and comparing with an intensity of the input detection signal to obtain a result after the Boolean logic operation, so as to implement a full binary Boolean logic operation, wherein inputting the logic values into the two phase change functional units refers to inputting corresponding write optical pulse signals into the two phase change functional units using the three-step operation,
wherein the three-step operation comprises:
when logic 0 is input into the first phase change functional unit, in a first operation step a first optical pulse signal is input into the straight waveguide from an end where the first phase change functional unit locates, in the second operation step a second optical pulse signal is input into the straight waveguide from the end where the first phase change functional unit locates, in the third operation step the first optical pulse signal is input into the straight waveguide from the end where the first phase change functional unit locates;
when logic 1 is input into the first phase change functional unit, in the first operation step the second optical pulse signal is input into the straight waveguide from the end where the first phase change functional unit locates, and the optical pulse signal is not input into the straight waveguide in both the second operation step and the third operation step;
when logic 0 is input into the second phase change functional unit, in the first operation step the second optical pulse signal is input into the straight waveguide from the end where the second phase change functional unit locates, and the optical pulse signal is not input into the straight waveguide from the end where the second phase change functional unit locates in both the second and third operation steps; and
when logic 1 is input into the second phase change functional unit, in the first operation step, the second operation step, and the third operation step, the first optical pulse signal is input into the straight waveguide from the end where the second phase change functional unit locates.