All-optical multibit address recognition at 20 Gb/s is demonstrated based on a special AND logic of terahertz optical asymmetric demultiplexer (TOAD). The semiconductor optical amplifier (SOA) used in the TOAD is biased at transparency status to accelerate the gain recovery. This is the highest bit rate that multibit address recognition is demonstrated with SOA-based interferometer. The experimental results show low pattern dependency. With this method, address recognition can be performed without separating address and payload beforehand.
© 2005 Chinese Optics Letters
(070.4340) Fourier optics and signal processing : Nonlinear optical signal processing
(230.1150) Optical devices : All-optical devices
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
Yumei Yan, Jian Wu, and Jintong Lin, "All-optical multibit address recognition at 20 Gb/s based on TOAD," Chin. Opt. Lett. 3, 234-236 (2005)