Abstract
Scalability and photonic integration of packet switched cross-connect
nodes that utilize all-optical signal processing is a crucial issue that eventually
determines the future role of photonic signal processing in optical networks.
We present a 1 $\times$ 4 all-optical packet switch based on label swapping technique that
utilizes a scalable and asynchronous label processor and label rewriter. By
combining $N$ in-band
labels at different wavelengths (within the bandwidth of the payload), up
to $2^{N}$ possible
addresses can be encoded. The proposed label processor requires only $N$ active devises
to process the $2^{N}$ addresses that makes this label processing technique scalable with
the number of addresses. Experimental results showed error-free packet switching
operation at 160 Gb/s. The label erasing and new label insertion operation
introduces only 0.5 dB of power penalty. These results indicate a potential
utilization of the presented technique in a multi-hop packet switched network.
© 2009 IEEE
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