Simple and Low Cost 10 Gb/s Coherent Transmission for Long Reach PON

131 km transmission (typical LR-PON distance) at 10Gb/s over G.652 fiber is demonstrated exploiting a direct modulated (DM) DFB laser, coherent receiver and electrical filtering obtaining an innovative chirp managed approach. No dispersion compensation (optical or DSP) is exploited

10 gb s long reach pon system with low complexity dispersion managed coherent receiver

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10 Gb/s long-reach PON system based on directly modulated transmitters and simple polarization independent coherent receiver

We demonstrate a coherent 10 Gb/s PON system solution exploiting a direct modulated laser (DML) transmitter to obtain long reach (>100 km). The system exploits a simplified coherent receiver. This receiver, which is similar to the scheme that we recently proposed, had to be adapted to obtain polarization-independent operation with a chirped signal from a DML and is still based on simple optical and electrical components. Thanks to the combined use of coherent-RX and DML, the system achieves a link budget of 43 dB for 105 km transmission distance with no need of dispersion compensation. This makes it a cost-effective, simple, and robust solution for satisfying the increasing capacity request of access networks

Editorial In situ operando investigation of catalytic and electrocatalytic interfaces

In situ and operando spectroscopic methods play a fundamental role in a variety of different fields of modern science. In particular, as energy and environmental science have become increasingly important recently, the need of in situ and operando spectroscopic methods has also increased significantly. Therefore, we felt it was time to have a special issue focused on such techniques and for which the aim is to merge the research communities investigating catalytic and photo electrochemical interfaces with different in situ operando spectroscopic techniques, to share recent results, experimental methods, and future perspectives , as we reported in the scope of this special issue. With its 23 original research papers and 2 topical reviews, spanning from heterogeneous catalysis to photoelectrochemistry, we believe that the outcome of this special issue fulfills the aforementioned ai