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A novel low power and asynchronous all-optical header recogniser for pure DPSK packets based on narrow filtering and optical correlators is demonstrated. Experimental results show the recognition of two different packet headers at 12.5 Gbit/s at two distinct outputs. This concept can be extended to distinguish a larger number of headers at distinct outputs, to operate at higher bit rate and can be used in devising an all-optical packet switch.
Date of Publication: 11 Nov. 2004