The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
An optoelectronic oscillator topology based on a class AB analogue optical link is proposed. The motivation for this approach is based on the unique property of class AB links for mitigating both shot noise and relative intensity noise contributions. The class AB optoelectronic oscillator is compared with a conventional single loop optoelectronic oscillator.
Photonic signal processing offers a new powerful paradigm for processing high speed signals, due to its inherent advantages of wide bandwidth and immunity to electromagnetic interference. Microwave photonic frequency conversion is essential in wide-ranging optical-wireless system applications, and with the ever-increasing drive to higher operating frequencies, microwave photonic mixers, filters and...
In this paper, we present main results of electrical modelling of various semiconductor lasers specifying their advantages and drawbacks in terms of gain, noise, and non-linearity. As these components are considered as an electro-optical transducer in photonic-microwave links, their required characteristics and performances that cannot be unique and are strongly dependent on dedicated applications...
Low-Coherence Interferometry (LCI) is a highly relevant optical measurement technique used in a wide variety of applications from sensing to medical imaging among others due to its non-invasive performance with high axial precision. In this work, a novel structure is proposed with the application of Microwave Photonics (MWP) as key enabling technology for real-time LCI applications. The proposed MWP-LCI...
This paper describes the work and structure of the FIWIN5G: FIber-Wireless Integrated Networks for 5th Generation delivery, an Innovative Training Network (ITN) funded by the European Union's Horizon 2020 research and innovation programme through the Marie Sklodowska-Curie Actions (MSCA) scheme. The programme, which started in January 2015, comprises 10 leading research institutions, a wide range...
We present novel multi-cavity fibre-based devices built upon the fabrication of cavities along each one of the cores of a homogeneous 7-core fibre. Since the multi-cavity structure is confined in a single optical fiber, this approach translates into optical true time delay lines that offer at the same time 2D operation by exploiting the optical wavelength and the spatial diversity domains. We envisage...
We propose and analyse two novel mesh design geometries, the hexagonal and the triangular lattice, for the implementation of tunable optical cores in programmable photonic processors and universal couplers. They are compared to a previously proposed square mesh topology in terms of a series of figures of merit that account for metrics that are relevant to on-chip integration of the mesh finding that...
The increase of data traffic in wireless networks is requiring the bandwidth of photonics for the antenna data relay. While the distribution of RF signals through Radio-over-Fiber has become a well-accepted and established technology thanks to the low loss of fibers in signal transportation, photonics still has lot to offer to the radio world. RF signal generation, detection, and conditioning (e.g...
The integration of graphene in high frequency devices envisages the possibility to realize new components for microwave, terahertz up to optical frequency ranges. In this paper, we will discuss the latest achievements and new perspectives in graphene-based devices for applications such as communication engineering, photonic technology and sensing. We will also review our recent results on modeling...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.