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On the Fly All-Optical Packet Switching Using Hybrid WDM/OCDMA Labeling

Abstract : We introduce a novel design of an all-optical packet routing node that allows for the selection and forwarding of optical packets based on the routing information contained in hybrid wavelength division multiplexing/optical code division multiple access (WDM/OCDMA) labels. A stripping paradigm of optical code-label is adopted. The router is built around an optical-code gate that consists in an optical flip–flop controlled by two fiber Bragg grating correlators and is combined with a Mach–Zehnder interferometer (MZI)-based forwarding gate. We experimentally verify the proof-of-principle operation of the proposed self-routing node under NRZ and OCDMA packet traffic conditions. The successful switching of elastic NRZ payload at 40 Gb/s controlled by DS-OCDMA coded labels and the forwarding operation of encoded data using EQC codes are presented. Proper auto-correlation functions are obtained with higher than 8.1 dB contrast ratio, suitable to efficiently trigger the latching device with a contrast ratio of 11.6 dB and switching times below 3.8 ns. Error-free operation is achieved with 1.5 dB penalty for 40 Gb/s NRZ data and with 2.1 dB penalty for DS-OCDMA packets. The scheme can further be applied to large-scale optical packet switching networks by exploiting efficient optical coders allocated at different WDM channels.
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Submitted on : Friday, September 13, 2019 - 3:33:45 PM
Last modification on : Tuesday, October 19, 2021 - 11:14:21 AM


  • HAL Id : hal-02286276, version 1



Houssem Brahmi, G. Giannoulis, Mourad Menif, D. Katopodis, D. Kalavrouziotis, et al.. On the Fly All-Optical Packet Switching Using Hybrid WDM/OCDMA Labeling. Optics Communications, Elsevier, 2014, 312, pp.175-184. ⟨hal-02286276⟩



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