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In this work we present a form to get soliton pulses using a fiber Bragg-grating based on a Gires-Tournois interferometer (FBGGTI) as control medium for dispersion and nonlinearities. The interferometer is conformed by two Bragg-gratings, one of them as a weak grating, and the other one as a strong one, spaced by 4 mm of distance. Inside the setup, a "sech" profile as apodization type is...
We experimentally demonstrate a multidimensional global optical spectral shaping optimization based on genetic algorithm for fiber nonlinearities mitigation in a 56-GBd PDM-QPSK transmission system. The proposed method increased maximum reach by 24%, reducing transmission penalties by up to 1.8 dB.
Programmable optical nodes supporting heterogeneous traffic require optical backplanes with a high port count. We present two backplane architectures to enhance modularity, compare their scalability in terms of available cross-connections and we experimentally validate both proposals in a SDN scenario.
We propose a method for optical link survivability preservation by acting on the transmitter launch power and bit rate, and on the receiver DSP for linear/nonlinear impairments compensation. We validated the method for a legacy high-loss Brazilian network.
Simultaneous detection of 5 Gbit/s baseband ASK data and optical phase encoded wireless signal (6 GHz RF carrier with 625 Mbaud 16QAM/QPSK data), on the same optical carrier, is experimentally demonstrated using the same software reconfigurable digital coherent receiver.
A novel cognitive receiver for modulation format recognition with reconfigurable carrier recovery scheme is proposed and experimentally demonstrated for phase modulated radio-over-fibre links. Demodulation of burst-mode mixed modulation formats (PSK and QAM) is demonstrated after 40km of transmission.
In this paper, we first review the need for communications-assisted protection of subtransmission lines, describe the communications channels available, and compare applicable protection schemes. We show the advantages of directional comparison protection over digital point-to-point radio channels for this application. Later we present a summary of the applications of directional comparison protection...
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