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On-the-Fly All-Optical Contention Resolution for NRZ and RZ Data Formats Using Packet Envelope Detection and Integrated Optical Switches

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6 Author(s)
Stampoulidis, L. ; Dept. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens ; Kehayas, E. ; Apostolopoulos, D. ; Bakopoulos, P.
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We present a packet-by-packet contention resolution scheme that combines packet detection, optical space switching, and wavelength conversion performed in the optical domain by integrated optical switches. The packet detection circuit provides the control signals required to deflect and wavelength-convert the contending packets so that all the packets are forwarded to the same output without any collision or packet droppings. We demonstrate the compatibility of the scheme with both nonreturn-to-zero (NRZ) and return-to-zero (RZ) modulation formats by recording error-free operation for 10-Gb/s NRZ and 40-Gb/s RZ packet-mode traffic

Published in:

Photonics Technology Letters, IEEE  (Volume:19 ,  Issue: 8 )