Title :
Novel ultrafast all-optical XOR scheme based on Sagnac interferometric structure
Author :
Zhou, Yunfeng ; Wu, Jian ; Lin, Jintong
Author_Institution :
Beijing Univ. of Posts & Telecommun., China
fDate :
6/1/2005 12:00:00 AM
Abstract :
A novel scheme of all-optical XOR is proposed based on Sagnac interferometric structure. Using a semiconductor optical amplifier (SOA) as nonlinear medium, the operations of this scheme with 80 Gb/s return to zero pseudorandom bit sequence are simulated correctly with fairly high performance. Through numerical analysis, and by comparison of the performances between 40 and 80 Gb/s operation, parameters of the SOA and the signals are discussed, and this scheme is proved to exceed the speed limitation imposed by carrier lifetime of the SOA. This scheme is potentially capable of XOR operation speed to >100 Gb/s.
Keywords :
Sagnac interferometers; carrier lifetime; high-speed optical techniques; nonlinear media; optical logic; optical modulation; random sequences; semiconductor optical amplifiers; 40 Gbit/s; 80 Gbit/s; SOA; Sagnac interferometer; carrier lifetime; nonlinear medium; return to zero pseudorandom bit sequence; semiconductor optical amplifier; ultrafast all-optical XOR; Clocks; Couplers; Fiber nonlinear optics; Logic gates; Numerical analysis; Optical fiber communication; Optical interferometry; Probes; Sagnac interferometers; Semiconductor optical amplifiers; All-optical logic; Sagnac interferometric structure; XOR operation; semiconductor optical amplifier (SOA);
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2005.847544
