Title :
10-Gb/s all-optical half-adder with interferometric SOA gates
Author :
Tsiokos, D. ; Kehayas, E. ; Vyrsokinos, K. ; Houbavlis, T. ; Stampoulidis, L. ; Kanellos, G.T. ; Pleros, N. ; Guekos, G. ; Avramopoulos, H.
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Greece
Abstract :
In this letter, we report an all-optical module that generates simultaneously four Boolean operations at 10 Gb/s. The circuit employs two cascaded ultrafast nonlinear interferometers and requires only two signals as inputs. The first gate is configured as a 2 × 2 exchange-bypass switch and provides OR and AND logical operations. The second gate generates XOR (SUM bit) and AND (CARRY bit) Boolean operations and constitutes a binary half-adder. Successful operation of the system is demonstrated with 10-Gb/s return-to-zero pseudorandom data patterns.
Keywords :
Boolean functions; Mach-Zehnder interferometers; adders; high-speed optical techniques; optical logic; optical switches; 10 Gbit/s; AND logic; Boolean operations; CARRY operations; Mach-Zehnder interferometric gates; OR logic; XOR operations; all-optical half-adder; binary half-adder; cascaded ultrafast nonlinear interferometers; exchange-bypass switch; high-speed optical logic; interferometric SOA gates; pseudorandom data patterns; single-rail optical module; truth table; Circuit synthesis; High speed optical techniques; Interferometers; Nonlinear optics; Optical interferometry; Optical saturation; Optical signal processing; Optical switches; Semiconductor optical amplifiers; Ultrafast optics;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.819394
