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Photonics
Special Issues
Photonic Integrated Circuits for Information, Computing and Sensing
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Photonic Integrated Circuits for Information, Computing and Sensing

A special issue of Photonics (ISSN 2304-6732).

Deadline for manuscript submissions: 31 December 2024 | Viewed by 13007

Special Issue Editors

Dr. Andrea Salamon

E-Mail Website
Guest Editor
Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tor Vergata, 00133 Rome, Italy
Interests: integrated photonics; quantum information
Dr. Liam O’Faolain

E-Mail Website
Guest Editor
Centre for Advanced Photonics and Process Analysis (CAPPA), Munster Technological University, T12 P928 Cork, Ireland
Interests: silicon photonics; metasurfaces; integrated photonics; photonic crystals; nanophotonics
Dr. Simone Iadanza

E-Mail Website
Guest Editor
Paul Scherrer Institut - EPFL - IBM Research, 5232 Villigen, Switzerland
Interests: silicon photonics; integrated photonics; photonic crystals; nanophotonics; quantum photonics; integrated optoelectronics

Special Issue Information

Dear Colleagues,

Integrated photonics is a well-established research field with numerous applications ranging from telecommunications to integrated sensors, classical computing to quantum computing.

On the one hand, advances in manufacturing technologies made available by the microelectronics industry have enabled the design of new devices and the production of increasingly large photonic integrated circuits.

On the other hand, nanofabrication technologies that have recently become available have enabled the fabrication of entirely new devices, such as new types of sensors, light detectors, or devices for the generation, manipulation, and detection of non-classical states of light.

This Special Issue aims to provide an overview of cutting-edge research and review papers on photonic integrated circuits and their applications. Topics include, but are not limited to, the following:  

  • Nanophotonics;
  • Integrated photon detectors and sensors;
  • Quantum information;
  • Integrated quantum photonics;
  • Polymer waveguides;
  • 1D and 2D materials;
  • Optical sensing.

This Special Issue will benefit from a paper on your recent groundbreaking research.

Dr. Andrea Salamon
Dr. Liam O’Faolain
Dr. Simone Iadanza
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Photonics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • silicon photonics
  • nanophotonics
  • integrated photon detectors and sensors
  • quantum information
  • integrated quantum photonics
  • polymer waveguides
  • 1D and 2D materials
  • optical sensing

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (4 papers)

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Research

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10 pages, 2676 KiB  
Article
Cryogenic Thermo-Optical Coefficient of SU-8 Measured Using a Racetrack Resonator at 850 nm
by Salvador A. Medina-Rangel, Nicola Maraviglia, John O’Hara, Artem S. Vorobev, Simone Iadanza, Emanuele Pelucchi and Liam O’Faolain
Photonics 2024, 11(9), 800; https://doi.org/10.3390/photonics11090800 - 27 Aug 2024
Viewed by 809
Abstract
SU-8 is an emerging polymer material for integrated optical circuits that has demonstrated good structural properties in a cryogenic environment. In this article, we investigate the thermo-optical properties of SU-8 for a wavelength λ=850 nm, from room temperature [...] Read more.
SU-8 is an emerging polymer material for integrated optical circuits that has demonstrated good structural properties in a cryogenic environment. In this article, we investigate the thermo-optical properties of SU-8 for a wavelength λ=850 nm, from room temperature to cryogenic temperature down to 14 K. To measure the material properties, we designed and fabricated SU-8 racetrack resonators via electron beam lithography. While cooling the device in a closed-cycle cryostat, we measured the resonance spectrum as a function of the temperature from which we determined the temperature-induced variations of the group and effective indices of the waveguide. With the aid of waveguide eigenmode simulations, we used these data to derive the temperature dependence of the SU-8 refractive index nSU−8T. At room temperature (T~295 K), the thermo-optic coefficient dnSU−8/dT=−5.3±0.2×10−5 K−1. At low temperature (T~14 K), dnSU−8/dT=−1.27±0.05×10−4 K−1. Our research shows the potential of SU-8 photonics in a cryogenic environment, suitable for the integration with quantum light sources emitting in the near infrared (NIR). Full article
(This article belongs to the Special Issue Photonic Integrated Circuits for Information, Computing and Sensing)
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Review

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27 pages, 4822 KiB  
Review
Integrated Photonic Passive Building Blocks on Silicon-on-Insulator Platform
by Francesco Amanti, Greta Andrini, Fabrizio Armani, Fabrizio Barbato, Vittorio Bellani, Vincenzo Bonaiuto, Simone Cammarata, Matteo Campostrini, Thu Ha Dao, Fabio De Matteis, Valeria Demontis, Simone Donati, Giovanni Di Giuseppe, Sviatoslav Ditalia Tchernij, Andrea Fontana, Jacopo Forneris, Luca Frontini, Roberto Gunnella, Simone Iadanza, Ali Emre Kaplan, Cosimo Lacava, Valentino Liberali, Leonardo Martini, Francesco Marzioni, Luca Morescalchi, Elena Pedreschi, Paolo Piergentili, Domenic Prete, Valentino Rigato, Carlo Roncolato, Francesco Rossella, Matteo Salvato, Fausto Sargeni, Jafar Shojaii, Franco Spinella, Alberto Stabile, Alessandra Toncelli and Valerio Vitaliadd Show full author list remove Hide full author list
Photonics 2024, 11(6), 494; https://doi.org/10.3390/photonics11060494 - 23 May 2024
Cited by 1 | Viewed by 4127
Abstract
Integrated photonics on Silicon-On-Insulator (SOI) substrates is a well developed research field that has already significantly impacted various fields, such as quantum computing, micro sensing devices, biosensing, and high-rate communications. Although quite complex circuits can be made with such technology, everything is based [...] Read more.
Integrated photonics on Silicon-On-Insulator (SOI) substrates is a well developed research field that has already significantly impacted various fields, such as quantum computing, micro sensing devices, biosensing, and high-rate communications. Although quite complex circuits can be made with such technology, everything is based on a few ’building blocks’ which are then combined to form more complex circuits. This review article provides a detailed examination of the state of the art of integrated photonic building blocks focusing on passive elements, covering fundamental principles and design methodologies. Key components discussed include waveguides, fiber-to-chip couplers, edges and gratings, phase shifters, splitters and switches (including y-branch, MMI, and directional couplers), as well as subwavelength grating structures and ring resonators. Additionally, this review addresses challenges and future prospects in advancing integrated photonic circuits on SOI platforms, focusing on scalability, power efficiency, and fabrication issues. The objective of this review is to equip researchers and engineers in the field with a comprehensive understanding of the current landscape and future trajectories of integrated photonic components on SOI substrates with a 220 nm thick device layer of intrinsic silicon. Full article
(This article belongs to the Special Issue Photonic Integrated Circuits for Information, Computing and Sensing)
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18 pages, 81455 KiB  
Review
Hybrid Integrated Silicon Photonics Based on Nanomaterials
by Domenic Prete, Francesco Amanti, Greta Andrini, Fabrizio Armani, Vittorio Bellani, Vincenzo Bonaiuto, Simone Cammarata, Matteo Campostrini, Samuele Cornia, Thu Ha Dao, Fabio De Matteis, Valeria Demontis, Giovanni Di Giuseppe, Sviatoslav Ditalia Tchernij, Simone Donati, Andrea Fontana, Jacopo Forneris, Roberto Francini, Luca Frontini, Gian Carlo Gazzadi, Roberto Gunnella, Simone Iadanza, Ali Emre Kaplan, Cosimo Lacava, Valentino Liberali, Leonardo Martini, Francesco Marzioni, Claudia Menozzi, Elena Nieto Hernández, Elena Pedreschi, Paolo Piergentili, Paolo Prosposito, Valentino Rigato, Carlo Roncolato, Francesco Rossella, Andrea Salamon, Matteo Salvato, Fausto Sargeni, Jafar Shojaii, Franco Spinella, Alberto Stabile, Alessandra Toncelli, Gabriella Trucco and Valerio Vitaliadd Show full author list remove Hide full author list
Photonics 2024, 11(5), 418; https://doi.org/10.3390/photonics11050418 - 30 Apr 2024
Viewed by 2307
Abstract
Integrated photonic platforms have rapidly emerged as highly promising and extensively investigated systems for advancing classical and quantum information technologies, since their ability to seamlessly integrate photonic components within the telecommunication band with existing silicon-based industrial processes offers significant advantages. However, despite this [...] Read more.
Integrated photonic platforms have rapidly emerged as highly promising and extensively investigated systems for advancing classical and quantum information technologies, since their ability to seamlessly integrate photonic components within the telecommunication band with existing silicon-based industrial processes offers significant advantages. However, despite this integration facilitating the development of novel devices, fostering fast and reliable communication protocols and the manipulation of quantum information, traditional integrated silicon photonics faces inherent physical limitations that necessitate a challenging trade-off between device efficiency and spatial footprint. To address this issue, researchers are focusing on the integration of nanoscale materials into photonic platforms, offering a novel approach to enhance device performance while reducing spatial requirements. These developments are of paramount importance in both classical and quantum information technologies, potentially revolutionizing the industry. In this review, we explore the latest endeavors in hybrid photonic platforms leveraging the combination of integrated silicon photonic platforms and nanoscale materials, allowing for the unlocking of increased device efficiency and compact form factors. Finally, we provide insights into future developments and the evolving landscape of hybrid integrated photonic nanomaterial platforms. Full article
(This article belongs to the Special Issue Photonic Integrated Circuits for Information, Computing and Sensing)
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23 pages, 5841 KiB  
Review
Solid-State Color Centers for Single-Photon Generation
by Greta Andrini, Francesco Amanti, Fabrizio Armani, Vittorio Bellani, Vincenzo Bonaiuto, Simone Cammarata, Matteo Campostrini, Thu Ha Dao, Fabio De Matteis, Valeria Demontis, Giovanni Di Giuseppe, Sviatoslav Ditalia Tchernij, Simone Donati, Andrea Fontana, Jacopo Forneris, Roberto Francini, Luca Frontini, Roberto Gunnella, Simone Iadanza, Ali Emre Kaplan, Cosimo Lacava, Valentino Liberali, Francesco Marzioni, Elena Nieto Hernández, Elena Pedreschi, Paolo Piergentili, Domenic Prete, Paolo Prosposito, Valentino Rigato, Carlo Roncolato, Francesco Rossella, Andrea Salamon, Matteo Salvato, Fausto Sargeni, Jafar Shojaii, Franco Spinella, Alberto Stabile, Alessandra Toncelli, Gabriella Trucco and Valerio Vitaliadd Show full author list remove Hide full author list
Photonics 2024, 11(2), 188; https://doi.org/10.3390/photonics11020188 - 19 Feb 2024
Cited by 5 | Viewed by 4879
Abstract
Single-photon sources are important for integrated photonics and quantum technologies, and can be used in quantum key distribution, quantum computing, and sensing. Color centers in the solid state are a promising candidate for the development of the next generation of single-photon sources integrated [...] Read more.
Single-photon sources are important for integrated photonics and quantum technologies, and can be used in quantum key distribution, quantum computing, and sensing. Color centers in the solid state are a promising candidate for the development of the next generation of single-photon sources integrated in quantum photonics devices. They are point defects in a crystal lattice that absorb and emit light at given wavelengths and can emit single photons with high efficiency. The landscape of color centers has changed abruptly in recent years, with the identification of a wider set of color centers and the emergence of new solid-state platforms for room-temperature single-photon generation. This review discusses the emerging material platforms hosting single-photon-emitting color centers, with an emphasis on their potential for the development of integrated optical circuits for quantum photonics. Full article
(This article belongs to the Special Issue Photonic Integrated Circuits for Information, Computing and Sensing)
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