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Scalable Optical Packet Switches for Multiple Data Formats and Data Rates Packets

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7 Author(s)
Calabretta, N. ; COBRA Res. Inst., Eindhoven Univ. of Technol., Eindhoven, Netherlands ; Wang, W. ; Ditewig, T. ; Raz, O.
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We demonstrate an optical packet switch (OPS) subsystem employing in-band labeling to allow for transparent routing of packets with multiple data formats and data bit rates. Packets employing in-band labels can be processed without the need to reconfigure the label processor and the switch when changing data format and bit-rate. The label processor is based on asynchronous optical signal processing in combination with a simple electronic combinatory network. This makes the label processor capable to process a large number of labels with low latency time (<3 ns) without complicated and power-hungry high-speed packet clock recovery and serializer/deserializer circuits. Experimental results show error-free operation of 1 ?? 64 OPS subsystem for 160-Gb/s return-to-zero on-off keying and 120-Gb/s nonreturn-to-zero differential phase-shift keying multiwavelength packets.

Published in:

Photonics Technology Letters, IEEE  (Volume:22 ,  Issue: 7 )