Publications by Simon Julien Fabbri

Optical Feeder Links for GEO Satellites at Viasat Inc

Stefano Vaccaro, Alessandro Valentino Matheoud, Simon Julien Fabbri

This paper provides an overview of the activities on GEO Optical Feeder Links at Viasat Inc. In the last decade, laser communication has emerged as a promising technology for advancing the performance of high-capacity satellites and enhancing the security ...

SPIE2024

Arbitrarily high time bandwidth performance in a nonreciprocal optical resonator with broken time invariance

Camille Sophie Brès, Hatice Altug, Davide Grassani, Simon Julien Fabbri, Ivan Cardea, Kosmas Tsakmakidis

Most present-day resonant systems, throughout physics and engineering, are characterized by a strict time-reversal symmetry between the rates of energy coupled in and out of the system, which leads to a trade-off between how long a wave can be stored in th ...

Nature Research2020

Add-Drop Multiplexing Architecture for Nyquist OTDM Signals Based on a Single Mach-Zehnder Modulator

Camille Sophie Brès, Jianqi Hu, Svyatoslav Kharitonov, Simon Julien Fabbri

We propose and compare add-drop multiplexing schemes for Nyquist OTDM signals based on 1 x2 or 2 x2 Mach-Zehnder modulator. Bright and dark sinc pulse carver simultaneously provided by the modulator fulfil drop, notch and add functions. ...

IEEE2019

Investigation of temporal Talbot operation in a conventional optical tapped delay line structure

Camille Sophie Brès, Jianqi Hu, Simon Julien Fabbri

2019

Investigation of temporal Talbot operation in a conventional optical tapped delay line structure

Camille Sophie Brès, Jianqi Hu, Simon Julien Fabbri

We propose a novel scheme of temporal Talbot effect achieving optical pulse train repetition-rate multiplication in a conventional tapped delay line structure. While it is generally used for spectral amplitude filtering, we show that such architecture coul ...

2019

Roadmap on all-optical processing

Simon Julien Fabbri, Xiang Zhang

The ability to process optical signals without passing into the electrical domain has always attracted the attention of the research community. Processing photons by photons unfolds new scenarios, in principle allowing for unseen signal processing and comp ...

2019

Overcoming the time-bandwidth limit

Camille Sophie Brès, Davide Grassani, Simon Julien Fabbri, Ivan Cardea, Kosmas Tsakmakidis

We are so accustomed to the time-bandwidth limit that we often take it to be a fundamental relation that cannot be overcome. Contrary to this belief we here propose that the storage/delay time of a system can in fact be decoupled from the operating bandwid ...

IEEE2018

Flexible Width Nyquist Pulse Based on a Single Mach-Zehnder Modulator

Camille Sophie Brès, Jianqi Hu, Simon Julien Fabbri

We present a Nyquist pulse generation technique based on a single Mach-Zehnder modulator driven by a multi-harmonic electrical signal. The direct control of the RF components yields a range of 10 GHz sinc-shaped pulse train. ...

2018

Reconfigurable Filter-free Sinc-shaped RF Photonic Filters Based on Rectangular Optical Frequency Comb

Camille Sophie Brès, Jianqi Hu, Simon Julien Fabbri

We demonstrate reconfigurable sinc-shaped RF photonic filters based on rectangular optical frequency comb synthesized from cascaded modulators. Simplicity of the approach and flexibility in bandwidth for fixed free-spectral-range is shown. Phase response i ...

2018

Optical Sinc-Shaped Nyquist Pulse Source Based on a Single Mach-Zehnder Modulator

Camille Sophie Brès, Jianqi Hu, Simon Julien Fabbri

We present a precise and flexible Sinc-shaped Nyquist pulse source based on a single Mach-Zehnder modulator. The use of multi-harmonic RF signals provides direct control on the Nyquist pulse train generation. The variable comb source is demonstrated by sel ...

2017