Abstract
We present a field-programmable gate array (FPGA)-based label processor
for in-band optical labels with a processing time independent of the number
of label bits. This allows for implementing an optical packet switching architecture
that scales to a large port count without compromising the latency. As a proof
of concept, we have employed an FPGA board with 100 MHz clock to validate
the operation of the label processor in a 160 Gb/s optical packet switching
system. Experimental results show successful three label bits processing and
160 Gb/s packets switching with 1 dB power penalty and 470 ns of latency.
Projections on the label processor performance by using more powerful FPGAs
indicate that 60 label bits (2<sup>60</sup> optical addresses) can be processed within 31 ns.
© 2012 IEEE
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