Sébastien Lardenois

All-Optical Binary Pattern Recognition at 42 Gb/s

In this paper, a programmable binary pattern recognition system that also indicates the temporal position of the matched target sequence is described. The system employs all-optical logic gates, and the number of gates required by the system is independent of the length of the target bit sequence. Experimental results with 42.6 Gb/s input data and target patterns up to 256 bits in length are presented.

All-Optical Header Processing in a 42.6 Gb/s Optoelectronic Firewall

A novel architecture to enable future network security systems to provide effective protection in the context of continued traffic growth and the need to minimize energy consumption is proposed. It makes use of an all-optical prefiltering stage operating at the line rate under software control to distribute incoming packets to specialized electronic processors. An experimental system that integrates software controls and electronic interfaces with an all-optical pattern recognition system has demonstrated the key functions required by the new architecture. As an example, the ability to sort packets arriving in a 42.6 Gb/s data stream according to their service type was shown experimentally.

Application of semiconductor optical amplifier logic gates in high-speed all-optical pattern recognition

In this paper, we propose and demonstrate a novel all-optical pattern recognition system. The system is able to detect and locate a specified target pattern within an input data sequence at high line-rate. The key elements of the system are an all-optical XNOR logic gate and an all-optical AND gate, the latter forming part of a recirculating loop. Both these gates are based on semiconductor optical amplifiers (SOAs). Arbitrary 8-bit target patterns at 10.65 and 21.3 Gbit/s are successfully recognised and located using three SOA-based logic gates.

Use of Semiconductor Optical Amplifiers in Signal Processing Applications

We describe a 42.6 Gbit/s all-optical pattern recognition system which uses semiconductor optical amplifiers (SOAs). A circuit with three SOA-based logic gates is used to identify specific port numbers in an optical packet header.

Fully integrated 42.6 Gb/s all-optical XOR gate

We demonstrate the first fully integrated all-optical XOR gate, running at 42.6Gb/s, which has on-chip delays and power splitters. Error-free operation is obtained.

Demonstration of all-optical pattern recognition at 42Gbit/s

We demonstrate all-optical pattern recognition using semiconductor optical amplifier logic gates. For the first time, target patterns up to 256 bits long were successfully recognised and located in 42Gbit/s data.