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Now showing items 49 - 56 of 56

  • Advances in Fibre Based Pulse Shaping Technology and its Applications in Optical Communications

    Richardson, D.J.   Petropoulos, P.   Parmigiani, F.   Almeida, P.J.   Tian, C.   Ng, T.T.   Zhang, Z.   Ibsen, M.  

    Fibre grating technology can be used to design and fabricate reflective filters with accurately controlled complex phase and amplitude responses and thereby provide a powerful means to reshape short optical pulses in both time and frequency. We review recent progress in the area and present various applications focussed primarily in the areas of all-optical coding and decoding; and pulse retiming.
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  • Field trial of WDM-OTDM transmultiplexing employing photonic switch fabric-based buffer-less bit-interleaved data grooming and all-optical regeneration

    Simeonidou, D.   Leuthold, J.   Freude, W.   Bonk, R.   Tomkos, I.   Richardson, D.   Tzanakaki, A.   Monteiro, P.   Ellis, A.D.   Petropoulos, P.   Klonidis, D.   Ibrahim, S.K.   Morais, R.   Vorreau, P.   Spyropoulou, M.   Gonzalez, N. Amaya   Hillerkuss, D.   Weerasuriya, R.   Hugues-Salas, E.   Parmigiani, F.   Zarris, G.  

    We report; for the first time; a field trial of a novel 42.7Gbps/128.1Gbps WDM/OTDM grooming node; and confirm node interoperability and the data integrity of asynchronous retiming.
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  • All-optical grooming for 100 Gbit/s ethernet

    Leuthold, J.   Bonk, R.   Vorreau, P.   Sygletos, S.   Hillerkuss, D.   Freude, W.   Zarris, G.   Simeonidou, D.   Kouloumentas, C.   Spyropoulou, M.   Tomkos, I.   Parmigiani, F.   Petropoulos, P.   Richardson, D. J.   Weerasuriya, R.   Ibrahim, S.   Ellis, A. D.   Morais, R.   Monteiro, P.   Ben Ezra, S.   Tsadka, S.  

    A regenerative optical grooming switch for interconnecting 100 Gbit/s networks with lower bit-rate networks and switching functionality in time; space and wavelength domain is demonstrated. Lab and field demonstrations show the feasibility of the new concept. Q-factors above 20 dB are reported.
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  • Robust design of all-optical PSK regenerator based on phase sensitive amplification

    Slavik, R.   Parmigiani, F.   Kakande, J.   Westlund, M.   Skold, M.   Gruner-Nielsen, L.   Phelan, R.   Petropoulos, P.   Richardson, D.J.  

    More compact; stable; and efficient configuration of a recently-developed regenerator is presented. The regenerator is assessed at data rates up to 56 Gbit/s using white phase noise for the first time.
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  • Pulse Retiming Based on XPM Using Parabolic Pulses Formed in a Fiber Bragg Grating

    Parmigiani, F.   Petropoulos, P.   Ibsen, M.   Richardson, D.J.  

    We experimentally demonstrate a novel all-optical all-fiberized pulse retiming scheme incorporating parabolic pulses generated in a linear fashion through pulse shaping in a superstructured fiber Bragg grating. The scheme relies on chirping the signal to be retimed using cross-phase modulation with the broader parabolic clock pulses, and subsequently retiming it through linear propagation in a dispersive medium. We demonstrate the cancellation of up to 4-ps root-mean-square timing jitter for$sim$2-ps data.
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  • All-optical real-time OFDM transmitter and receiver

    Freude, W.   Hillerkuss, D.   Schellinger, T.   Schmogrow, R.   Winter, M.   Vallaitis, T.   Bonk, R.   Marculescu, A.   Li, J.   Dreschmann, M.   Meyer, J.   Ben Ezra, S.   Caspi, M.   Nebendahl, B.   Parmigiani, F.   Petropoulos, P.   Resan, B.   Oehler, A.   Weingarten, K.   Ellermeyer, T.   Lutz, J.   Moller, M.   Huebner, M.   Becker, J.   Koos, C.   Leuthold, J.  

    OFDM has emerged as a promising modulation technique in long-haul and access optical networks. The computational complexity of the format can be met with powerful digital signal processors; and especially by exploiting all-optical signal processing.
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  • Self-Phase Modulation-based 2R optical regenerator for the simultaneous processing of two WDM channels

    Provost, L.   Parmigiani, F.   Finot, C.   Petropoulos, P.   Richardson, D.J.  

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  • Field-trial of an all-optical PSK regenerator in a 40 Gbit/s, 38 channel DWDM transmission experiment

    Slavik, R.   Kakande, J.   Parmigiani, F.   Gruner-Nielsen, L.   Phelan, R.   Vojtech, J.   Petropoulos, P.   Richardson, D.J.  

    We report the first field-trial of a phase and amplitude regenerator highlighting the practicality of the technology. Sensitivity improvement and mitigation of transmission-induced noise with the regenerator placed in-line or at the receiver is demonstrated.
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