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Recognition of Wavelength-Division-Multiplexed Time-Series Optical Coded Labels Using Collinear Acoustooptic Devices without Time Gating for Photonic Routing

Optical label processing has been expected to increase the throughput of packet routing in photonic networks. We have studied label recognition using collinear acoustooptic (AO) devices, where the label is encoded in time and spectral domains. In the label recognition system in the time domain, time-gating devices are required to improve the recognition characteristics. In this report, we propose a label recognition system for optical codes encoded in time and spectral domains where the time-gating function is not required. We discuss the recognition characteristics using the results of numerical analysis. The proposed system will be useful in increasing the number of distinguishable codes and improving the flexibility of routing control in the networks.