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Recently it has been demonstrated that pulse width modulation (PWM) can represent a viable solution for the analog optical fronthaul alternative to standard radio over fibre, which still avoids the bandwidth expansion of the digital fronthaul. The PWM encodes the analog samples at the transmitter onto the duration of the on/off keyed optical signal, splitting the sampling and quantization of the radio...
Reflective semiconductor optical amplifier (RSOA)-based self-seeded (SS) transmitters have proved to be compact self-tuning transceivers for wavelength division multiplexed passive optical networks (WDM PONs). The small electro-optical bandwidth of currently available RSOA devices limits the maximum bit-rate for each transmitter. We thus propose a self-tuning WDM PON multilevel transmitter based on...
We present the final results of the EU FP7 ERMES project, which focused on the development of a WDM-PON colourless self-tuning transmitter based on RSOA self-seeding. Measurements obtained with a packaged O-band RSOA in a SFP+ compatible transmitter are reported at 1.25, 2.5 and 10 Gb/s for various drop fibre lengths, up to 6.3 km and 1 km respectively. We successfully demonstrated transmission over...
WDM PONs offering point-to-point connectivity, independence of multiple access protocol to share the medium are good candidates for supporting the new fronthaul fibre network requirements. The necessity to allow inventory and maintenance cost reduction will favour WDM PON solutions based on colourless transceivers. We present the proposal of a network embedded self-tuning colourless transmitter, based...
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