Special Issue "Microwave Photonics 2017"

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

Deadline for manuscript submissions: closed (15 January 2018)

Special Issue Editor

Guest Editor
Dr. Chao Wang

School of Engineering and Digital Arts, University of Kent Canterbury, CT2 7NT, UK
Website | E-Mail
Interests: microwave photonics; optical signal processing; ultrafast imaging; optical communications

Special Issue Information

Dear Colleagues,

Microwave photonics (MWP) is an emerging interdisciplinary area that investigates the deep interactions between microwaves and light waves for efficient generation, distribution, processing, control, and sensing of microwave, millimeter-wave, and terahertz signals. Owing to inherent advantages offered by optics, such as high speed, broad bandwidth and reduced electromagnetic interference, MWP has become an enabling technology for widespread fields ranging from defense applications, such as radar and electronic warfare systems, to civil applications, such as wireless and satellite communications, imaging and instrumentation.

This Special Issue will focus on the latest advances in this multi-disciplinary research area, ranging from novel devices to system test and new applications. Both original research papers and review articles are welcome to present in this Special Issue. Technical topics include but not limited to the following.

  •     high speed optoelectronic devices
  •     integrated microwave photonics
  •     microwave photonic signal processing
  •     photonic microwave signal and arbitrary waveform generation
  •     radio over fiber and 5G
  •     THz photonics
  •     microwave photonics for innovative applications

SI Best paper award (300 CHF) will be selected from this SI.

Dr. Chao Wang
Guest Editor

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 papers will be 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 quarterly 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 350 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

  • Photonic microwave generation
  • Microwave photonic filters
  • Integrated microwave photonics
  • Radio over fiber
  • Optical wireless communications
  • Microwave photonic sensing and measurements
  • Photonic analog-to-digital conversion
  • THz photonics

Published Papers (5 papers)

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Research

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Open AccessArticle Terahertz Radome Inspection
Photonics 2018, 5(1), 1; doi:10.3390/photonics5010001
Received: 24 November 2017 / Revised: 23 December 2017 / Accepted: 4 January 2018 / Published: 8 January 2018
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Abstract
Radomes protecting sensitive radar, navigational, and communications equipment of, e.g., aircraft, are strongly exposed to the environment and have to withstand harsh weather conditions and potential impacts. Besides their significance to the structural integrity of the radomes, it is often crucial to optimize
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Radomes protecting sensitive radar, navigational, and communications equipment of, e.g., aircraft, are strongly exposed to the environment and have to withstand harsh weather conditions and potential impacts. Besides their significance to the structural integrity of the radomes, it is often crucial to optimize the composite structures for best possible radio performance. Hence, there exists a significant interest in non-destructive testing techniques, which can be used for defect inspection of radomes in field use as well as for quality inspection during the manufacturing process. Contactless millimeter-wave and terahertz imaging techniques provide millimeter resolution and have the potential to address both application scenarios. We report on our development of a three-dimensional (3D) terahertz imaging system for radome inspection during industrial manufacturing processes. The system was designed for operation within a machining center for radome manufacturing. It simultaneously gathers terahertz depth information in adjacent frequency ranges, from 70 to 110 GHz and from 110 to 170 GHz by combining two frequency modulated continuous-wave terahertz sensing units into a single measurement device. Results from spiraliform image acquisition of a radome test sample demonstrate the successful integration of the measurement system. Full article
(This article belongs to the Special Issue Microwave Photonics 2017)
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Review

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Open AccessFeature PaperReview Microwave Signal Processing over Multicore Fiber
Photonics 2017, 4(4), 49; doi:10.3390/photonics4040049
Received: 7 November 2017 / Revised: 2 December 2017 / Accepted: 3 December 2017 / Published: 8 December 2017
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Abstract
We review the introduction of the space dimension into fiber-based technologies to implement compact and versatile signal processing solutions for microwave and millimeter wave signals. Built upon multicore fiber links and devices, this approach allows the realization of fiber-distributed signal processing in the
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We review the introduction of the space dimension into fiber-based technologies to implement compact and versatile signal processing solutions for microwave and millimeter wave signals. Built upon multicore fiber links and devices, this approach allows the realization of fiber-distributed signal processing in the context of fiber-wireless communications, providing both radiofrequency access distribution and signal processing in the same fiber medium. We present different space-division multiplexing architectures to implement tunable true time delay lines that can be applied to a variety of microwave photonics functionalities, such as signal filtering, radio beamsteering in phased array antennas or optoelectronic oscillation. In particular, this paper gathers our latest work on the following multicore fiber technologies: dispersion-engineered heterogeneous multicore fiber links for distributed tunable true time delay line operation; multicavity devices built upon the selective inscription of gratings in homogenous multicore fibers for compact true time delay line operation; and multicavity optoelectronic oscillation over both homogeneous and heterogeneous multicore fibers. Full article
(This article belongs to the Special Issue Microwave Photonics 2017)
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Open AccessFeature PaperReview Integrated Microwave Photonics for Wideband Signal Processing
Photonics 2017, 4(4), 46; doi:10.3390/photonics4040046
Received: 1 November 2017 / Revised: 24 November 2017 / Accepted: 24 November 2017 / Published: 30 November 2017
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Abstract
We describe recent progress in integrated microwave photonics in wideband signal processing applications with a focus on the key signal processing building blocks, the realization of monolithic integration, and cascaded photonic signal processing for analog radio frequency (RF) photonic links. New developments in
[...] Read more.
We describe recent progress in integrated microwave photonics in wideband signal processing applications with a focus on the key signal processing building blocks, the realization of monolithic integration, and cascaded photonic signal processing for analog radio frequency (RF) photonic links. New developments in integration-based microwave photonic techniques, that have high potentialities to be used in a variety of sensing applications for enhanced resolution and speed are also presented. Full article
(This article belongs to the Special Issue Microwave Photonics 2017)
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Open AccessReview Tunable Multiband Microwave Photonic Filters
Photonics 2017, 4(4), 45; doi:10.3390/photonics4040045
Received: 24 October 2017 / Revised: 20 November 2017 / Accepted: 21 November 2017 / Published: 23 November 2017
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Abstract
The increasing demand for multifunctional devices, the use of cognitive wireless technology to solve the frequency resource shortage problem, as well as the capabilities and operational flexibility necessary to meet ever-changing environment result in an urgent need of multiband wireless communications. Spectral filter
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The increasing demand for multifunctional devices, the use of cognitive wireless technology to solve the frequency resource shortage problem, as well as the capabilities and operational flexibility necessary to meet ever-changing environment result in an urgent need of multiband wireless communications. Spectral filter is an essential part of any communication systems, and in the case of multiband wireless communications, tunable multiband RF filters are required for channel selection, noise/interference removal, and RF signal processing. Unfortunately, it is difficult for RF electronics to achieve both tunable and multiband spectral filtering. Recent advancements of microwave photonics have proven itself to be a promising candidate to solve various challenges in RF electronics including spectral filtering, however, the development of multiband microwave photonic filtering still faces lots of difficulties, due to the limited scalability and tunability of existing microwave photonic schemes. In this review paper, we first discuss the challenges that were facing by multiband microwave photonic filter, then we review recent techniques that have been developed to tackle the challenge and lead to promising developments of tunable microwave photonic multiband filters. The successful design and implementation of tunable microwave photonic multiband filter facilitate the vision of dynamic multiband wireless communications and radio frequency signal processing for commercial, defense, and civilian applications. Full article
(This article belongs to the Special Issue Microwave Photonics 2017)
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Open AccessFeature PaperReview Simultaneous Multi-Channel Microwave Photonic Signal Processing
Photonics 2017, 4(4), 44; doi:10.3390/photonics4040044
Received: 25 October 2017 / Revised: 11 November 2017 / Accepted: 15 November 2017 / Published: 17 November 2017
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Abstract
Microwave photonic (MWP) systems exploit the advantages of photonics, especially with regards to ultrabroad bandwidth and adaptability, features that are significantly more challenging to obtain in the electronic domain. Thus, MWP systems can be used to realize a number of microwave signal processing
[...] Read more.
Microwave photonic (MWP) systems exploit the advantages of photonics, especially with regards to ultrabroad bandwidth and adaptability, features that are significantly more challenging to obtain in the electronic domain. Thus, MWP systems can be used to realize a number of microwave signal processing functions including, amongst others, waveform generation and radio-frequency spectrum analysis (RFSA). In this paper, we review recent results on fiber and integrated approaches for simultaneous generation of multiple chirped microwave waveforms as well as multi-channel RFSA of ultrahigh repetition optical rate pulse trains. Full article
(This article belongs to the Special Issue Microwave Photonics 2017)
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