Abstract
We describe the development of an optically clocked transistor array
(OCTA) interface device for label swapping high-speed asynchronous burst optical
packets. The OCTA integrates the three critical functions of serial-to-parallel
(SP) conversion, parallel-to-serial (PS) conversion, and clock-pulse generation
into a simple optoelectronic integrated circuit (OEIC) to create a single-chip
interface between the input/output baseband optical labels and a CMOS label
processor. The result is a high-performance label swapping solution which
is compact and low power. In this paper, a detailed investigation of the design
and optimization of the circuit is first performed, followed by testing of
device stability under subsystem operating conditions. Finally, demonstrations
of single-channel switching speeds allowing greater than 100-Gb/s operation,
40-Gb/s SP and PS conversion with an eight-channel OCTA, and error-free label
swapping of 10-Gb/s asynchronous optical packets with a prototype label swapper
module are described.
© 2008 IEEE
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