Frédéric Lucarz

Learn More
In this paper it is proposed and designed an all-optical Sampler (o-Sampler) intended to be part of future optical Digitising Radio-over-Fibre (o-DRoF) transceivers. It is based on the Semiconductor Laser Amplifier Loop Mirror (SLALOM) configuration thus using the nonlinearities of a semiconductor optical amplifier (SOA) in cross-switching regime. The(More)
In this paper it is proposed and designed an original all-optical Encoder (o-Encoder) intended, but not exclusively, to be part of future optical digitising radio-over-fibre (o-DRoF) transceiver. It is based on the Semiconductor Laser Amplifier Loop Mirror (SLALOM) configuration exploiting the nonlinearities of a semiconductor optical amplifier (SOA) in(More)
A selection of international key speakers from both industry and academia were invited to address radio-over-fibre and all-optical wireless technologies with a focus on minimising overall energy consumption in wireless access networks. This capstone event marked the end of the tenure by Dr. Hall of the first SISCom International Chair. The Chair supported(More)
Distributed antenna systems (DAS) are known to improve coverage and performance of wireless communicat ions in indoor environ ments. In the present paper, we propose a method to determine the position of distributed antennas that optimizes the network capacity for a given deployment scenario. We also consider power consumption measurements of(More)
This paper describes an optical Thresholder (o-Thresholder) intended to be part of a transmitter module for future all-optical Digitising Radio-over-Fibre (o-DRoF) transceivers. The proposed device is based on an Attenuation-Imbalanced Semiconductor Laser Amplifier Loop Mirror (AI-SLALOM) in self-switching regime, using the nonlinearities of a semiconductor(More)
A novel photonic circuit design for implementing frequency 8-tupling and 24-tupling was presented [Opt. Lett.39, 6950 (2014)10.1364/OL.39.006950OPLEDP0146-9592], and although its key message remains unaltered, there were typographical errors in the equations that are corrected in this erratum.
It is known that distributed antenna systems (DAS) using radio-over-fiber (RoF) links are able to increase coverage and to improve energy efficiency compared to traditional wireless access networks. In this paper, we focus on the energy efficiency of 802.11n RoF DAS architectures and we provide a methodology based on ns-3 to evaluate and optimize energy(More)
A photonic circuit design for implementing frequency 8-tupling and 24-tupling is proposed. The front- and back-end of the circuit comprises 4×4 MMI couplers enclosing an array of four pairs of phase modulators and 2×2 MMI couplers. The proposed design for frequency multiplication requires no optical or electrical filters, the operation is not limited to(More)
This paper describes the conception, design and numerical simulations of an electromagnetic-receiver & optical-modulator based on a solely semiconductor optical amplifier (SOA) and a fibre-optic Sagnac loop incorporating a SOA both without bias current. Only the interferometric device was able to detect weak high-frequency RF carriers from hundred pW to(More)