Mario Rannello

• Sant'Anna School of Advanced Studies

We report C-band 100 Gb/s transmission (4×28 Gb/s) up to 6.5 km of standard single mode fiber exploiting an InP monolithically integrated WDM transmitter made by an array of four directly modulated DFB lasers on a 100 GHz spaced grid having a 3-dB bandwidth in excess of 20 GHz. To overcome the conventional chirp related chromatic dispersion limitat...

Here we present the experimental characterization of 1 Mbit/s optical wireless communication system by simulating an intra-CubeSat environment where we exploit the reflections to transmit in the 2U CubeSat. The optical system uses infrared-LEDs, silicon-Avalanche photodiode, digital optical power meter and optical attenuators.

We introduce a coherent receiver that, without DSP and/or polarization coding at the transmitter, requires no Polarization Beam Splitter and still is polarization-independent. It is experimentally demonstrated at 10 Gbit/s with a sensitivity of -37.6 dBm at FEC level. It can also be operated at higher bit-rates and finds application in high-speed a...

We present the exploratory approach of Project FOCS (Free Space Optical communications for Space), which aims at proposing and demonstrating new applications of Visible Light Communications (VLC) for satellites. The first selected application scenario that will be investigated deals with transmission of Gbit/s signals on very small satellites, e.g....

We present the high-level approach of TOWS (Transmission of Optical Wireless Signals for telecom satellites) Project, which will design, realize and demonstrate new implementations of optical wireless systems supporting satellite applications. The TOWS systems should allow for seamless integration into present satellite payloads, reducing the weigh...

We experimentally demonstrate a 24 Gbit/s Discrete Multi-Tone (DMT) Optical Wireless Communication (OWC) system that exploits a commercial Vertical Cavity Surface Emitting Laser (VCSEL) and a low-cost Photo-Diode (PD). The OWC link has a good tolerance to misalignment (9 mm at 12.5 Gbit/s and 1.5 m link distance), thus it does not require active al...

We investigate and experimentally compare 25 Gb/s serial-line rate optical and electrical duobinary signals combined with DSP-free, coherent envelope-detection for serial-line rate upgrade in future PONs. -37.3dBm sensitivity is achieved without applying any equalization.

We experimentally demonstrate an innovative UltraDense Wavelength Division Multiplexing (UDWDM) Passive Optical Networks (PON) that implements the full λ-to-the-user concept in a filterless distribution network. Key element of the proposed system is an innovative class of coherent transceivers, purposely developed with a non-conventional technical...

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...

Advantages offered by coherent detection systems in access networks are not limited to the increase of power budget due to the superior sensitivity. Channel selectivity is another intriguing feature offered by coherent systems that can be exploited to enable advanced system and network functionalities for access systems. Among them, we focus here o...

A 1.25-Gb/s ASK passive optical network (PON) system with a -51 dBm pre-FEC sensitivity (at BER = 2 × 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-3</sup> ) is enabled by a real-time polarization-independent coherent receiver (PI-RX) that needs no DSP (nor ADC). The receiver, which only makes us...

A coherent TX-RX prototype is presented including a real-time polarization-independent coherent receiver (PI-RX) with analog processing (no DSP). The prototype, realised by means of common DFBs and commercially available RF electronic ICs, is targeted for use on a 6.25 GHz Ultra Dense Wavelength Division Multiplexed (UD-WDM) grid and features up to...

A 1.25 Gb/s ASK PON system with -51dBm sensitivity (at BER=2∙10-3) is enabled by a polarization-independent coherent receiver that needs no DSP (nor ADC). The system just uses common DFBs and commercial electronic devices and has 52 dB dynamic range.

A 1.25 Gb/s ASK PON system with −51dBm sensitivity (at BER=2−10 3 ) is enabled by a polarization-independent coherent receiver that needs no DSP (nor ADC). The system just uses common DFBs and commercial electronic devices and has 52 dB dynamic range.

This paper presents the implementations and test results of the novel polarization-independent receiver for ASK format, realized in the framework of COCONUT FP7 Project. COCONUT exploits low-cost optical components and simple electronics, so that the cost of typical line terminals would be affordable to the end-users. Among the different technical...