Advanced search

Filter By:

Journal Check one or more journals to show results from those journals only.

Choose more journals

Article type Check one or more article types to show results from those article types only.
Subject Check one or more subjects to show results from those subjects only.
Date Choose a date option to show results from those dates only.

Custom date range

Clear all filters
Sort by:
Showing 1–21 of 21 results
Advanced filters: Author: José Capmany Clear advanced filters

  • The flexibility of microwave photonics provides advantages over electronic circuitry, yet the lack of integrated chip-scale devices limits its practical application. This study presents microwave filters based on photonic crystal waveguides with controllable delays as a step towards intregable circuits.

    • Juan Sancho
    • Jerome Bourderionnet
    • Alfredo De Rossi
    Research
    Nature Communications
    Volume: 3, P: 1-9

  • In most optical computing schemes, the size of the chip increases quadratically with the problem size. Here, the authors demonstrate an architecture for optical convolutional neural networks which, while losing the independent reconfigurability of the kernels, allows for linear scaling of the circuit size.

    • Xiangyan Meng
    • Guojie Zhang
    • Ming Li
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-9

  • Frequency-scanning systems with narrow instantaneous linewidth hold promise for various fields. Here, the authors report the use of time-variant parity-time symmetry to dynamically narrow the instantaneous linewidth of frequency-scanning systems.

    • Mingjian Li
    • Tengfei Hao
    • Ming Li
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-9

  • The Authors report a novel architecture of photonic beamformer capable of achieving broadband operation and a high number of pointing angles. We demonstrate the operation of a 5-bit beamformer capable of providing 32 pointing angles in the 10−30 GHz range.

    • Pablo Martinez-Carrasco
    • Tan Huy Ho
    • José Capmany
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-9

  • The authors report implementing and demonstrating a first general-purpose integrated photonic programmable processor capable of performing all the functionalities required in RF photonic systems, such as those needed in 5/6 G communications networks.

    • Daniel Pérez-López
    • Ana Gutierrez
    • José Capmany
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-11

  • Slow-light techniques originally conceived for buffering high-speed digital optical signals now look set to play an important role in providing broadband phase and true time delays for microwave signals.

    • José Capmany
    • Ivana Gasulla
    • Salvador Sales
    Comments & Opinion
    Nature Photonics
    Volume: 5, P: 731-733

  • Reconfigurable optical chips made from 2D meshes of connected waveguides could pave the way for programmable, general purpose microwave photonics processors.

    • José Capmany
    • Ivana Gasulla
    • Daniel Pérez
    News & Views
    Nature Photonics
    Volume: 10, P: 6-8

  • Harnessing the large-scale integration and individual control of artificial atoms on silicon photonic circuits enables the realization of a rapidly programmable topological photonic chip that can be dynamically reconfigured to explore diverse topological phenomena.

    • José Capmany
    • Daniel Pérez-López
    News & Views
    Nature Materials
    Volume: 23, P: 874-875

  • Authors present a fibre Bragg grating-based all-pass spectral phase filter with an unprecedented frequency resolution of 1 GHz, at least 10× improvement compared to a standard optical waveshaper. Using the all-fibre phase filter, fully passive NOT and XNOR logic operations are experimentally demonstrated at ultrafast speeds with few-fJ/bit energy consumption.

    • Saket Kaushal
    • A. Aadhi
    • José Azaña
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-10

  • Optoelectronic oscillators (OEOs) are used to generate low-noise microwave oscillations for many technologies but typically operate in a limited frequency range. Here the authors present an OEO that takes advantage of random distributed feedback and an open cavity structure to produce ultra-wideband random microwave signals.

    • Zengting Ge
    • Tengfei Hao
    • Ming Li
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-8

  • Signal processors based on programmable photonic circuits will enable many future applications employing a common hardware platform. The authors present the architecture and two approaches to management automation to enable self-configuration and optimization of such photonic integrated circuits.

    • Daniel Pérez-López
    • Aitor López
    • José Capmany
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-11

  • Ferroelectric domain switching controlled by electrical pulses provides a controllable means to tune the refractive index of BaTiO3 thin films. Now, a device based on this material is presented that is capable of implementing low-power, high-speed and CMOS-compatible programmable phase shifters in silicon photonic chips.

    • José Capmany
    • Daniel Pérez-López
    News & Views
    Nature Photonics
    Volume: 16, P: 479-480

  • Integrated optical circuits today are typically designed for a few special functionalities and require complex design and development procedures. Here, the authors demonstrate a reconfigurable but simple silicon waveguide mesh with different functionalities.

    • Daniel Pérez
    • Ivana Gasulla
    • José Capmany
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-9

  • A tunable photonic microwave filter is monolithically integrated in an InP chip. The filter includes all of the required elements — a laser, a modulator and a photodetector — and its response can be tuned by controlling the electric currents.

    • Javier S. Fandiño
    • Pascual Muñoz
    • José Capmany
    Research
    Nature Photonics
    Volume: 11, P: 124-129

  • The current state of programmable photonic integrated circuits is discussed, including recent developments in their building blocks, circuit architectures, electronic control and programming strategies, as well as different application spaces.

    • Wim Bogaerts
    • Daniel Pérez
    • Andrea Melloni
    Reviews
    Nature
    Volume: 586, P: 207-216

  • This Review discusses recent advances of microwave photonic technologies and their applications in communications and information processing, as well as their potential implementations in quantum and neuromorphic photonics.

    • David Marpaung
    • Jianping Yao
    • José Capmany
    Reviews
    Nature Photonics
    Volume: 13, P: 80-90