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Photonics
Special Issues
Recent Advances in Micro-Nano Optics
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Recent Advances in Micro-Nano Optics

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "Optoelectronics and Optical Materials".

Deadline for manuscript submissions: closed (10 February 2024) | Viewed by 7424

Special Issue Editors

Dr. Xiaodong Shi

E-Mail Website
Guest Editor
Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Singapore 138634, Singapore
Interests: microcavity; metamaterials; nonlinear optics; quantum optics; nanofabrication; wide-bandgap semiconductors
Dr. Zhenyu Li

E-Mail Website
Guest Editor
Institute of Microelectronics, Agency for Science, Technology and Research, Singapore 117685, Singapore
Interests: biological sensors; optical communications; data center; transceivers; optical force; silicon photonics; micro-ring resonators
Dr. Fan Yang

E-Mail Website
Guest Editor
Fachbereich Physik, Universität Konstanz, 78457 Konstanz, Germany
Interests: non-linear dynamics in MEMS/NEMS resonators; optical interferometry detection
Dr. Jingjing Zhang

E-Mail Website
Guest Editor
Institute of Micro-Nano Optoelectronic and Terahertz Technology, Jiangsu University, Zhenjiang 210010, China
Interests: 2D materials; waveguide optics; photonic devices; quantum communication; quantum key distribution
Dr. Xiaorui Liang

E-Mail Website
Guest Editor
1. Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
2. New Smart City High-Quality Power Supply Joint Lab of China Southern Power Grid, Shenzhen Power Supply Co. Ltd, Shenzhen 518055, China
Interests: ocean optics; energy storage; carbon neutral

Special Issue Information

Dear Colleagues,

It is my pleasure to invite you to contribute to this Special Issue of Photonics, which will be dedicated to the Recent Advances of Micro-Nano Optics. Micro/nano optics is a promising branch in the field of optics, which investigates the interaction, propagation, control, or manipulation of light with structures or devices on a subwavelength scale.  After decades of tremendous efforts, micro/nano optics has already moved from its infancy into an advanced era, in which theoretical predictions are being continuously experimentally demonstrated. It remarkably combines photonics with the developing nanotechnology. At the same time, various fields and applications are taking advantage of the astonishing progress in micro/nano optics, ranging from fundamental physics to optical engineering, from the environment to health and from biology to carbon-free energy.

This Special Issue is aimed at collecting both review papers and original research articles in the field of micro/nano optics for both fundamental and applied aspects, and the topics to be covered in the Special Issue will include, but are not limited to, the following:

  • Light–matter interactions;
  • Nanostructures, nanoparticles, nanotubes and nanowires;
  • Metamaterials, metastructures and photonic crystals;
  • Plasmonics;
  • Quantum dots and color centers;
  • Non-linear and ultra-fast optics;
  • Integrated photonics;
  • Topological and non-reciprocal optics;
  • Inverse design in optics;
  • Optomechanics;
  • Advanced imaging;
  • Novel materials;
  • Nanofabrication and advanced manufacturing.

We are looking forward to your contributions.

Dr. Xiaodong Shi
Dr. Zhenyu Li
Dr. Fan Yang
Dr. Jingjing Zhang
Dr. Xiaorui Liang
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

  • nanostructures
  • metamaterials
  • photonic crystals
  • plasmonics
  • quantum dots
  • color centers
  • integrated photonics
  • inverse design
  • optomechanics
  • nanofabrication

Published Papers (5 papers)

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Research

12 pages, 2762 KiB  
Article
Light Confinement in Twisted Single-Layer 2D+ Moiré Photonic Crystals and Bilayer Moiré Photonic Crystals
by Steve Kamau, Noah Hurley, Anupama B. Kaul, Jingbiao Cui and Yuankun Lin
Photonics 2024, 11(1), 13; https://doi.org/10.3390/photonics11010013 - 25 Dec 2023
Viewed by 1260
Abstract
Twisted photonic crystals are photonic analogs of twisted monolayer materials such as graphene and their optical property studies are still in their infancy. This paper reports optical properties of twisted single-layer 2D+ moiré photonic crystals where there is a weak modulation in z [...] Read more.
Twisted photonic crystals are photonic analogs of twisted monolayer materials such as graphene and their optical property studies are still in their infancy. This paper reports optical properties of twisted single-layer 2D+ moiré photonic crystals where there is a weak modulation in z direction, and bilayer moiré-overlapping-moiré photonic crystals. In weak-coupling bilayer moiré-overlapping-moiré photonic crystals, the light source is less localized with an increasing twist angle, similar to the results reported by the Harvard research group in References 37 and 38 on twisted bilayer photonic crystals, although there is a gradient pattern in the former case. In a strong-coupling case, however, the light source is tightly localized in AA-stacked region in bilayer PhCs with a large twist angle. For single-layer 2D+ moiré photonic crystals, the light source in Ex polarization can be localized and forms resonance modes when the single-layer 2D+ moiré photonic crystal is integrated on a glass substrate. This study leads to a potential application of 2D+ moiré photonic crystal in future on-chip optoelectronic integration. Full article
(This article belongs to the Special Issue Recent Advances in Micro-Nano Optics)
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15 pages, 2118 KiB  
Article
Hybrid Bio-Nanocomposites by Integrating Nanoscale Au in Butterfly Scales Colored by Photonic Nanoarchitectures
by Krisztián Kertész, Gábor Piszter, Andrea Beck, Anita Horváth, Gergely Nagy, György Molnár, György Zoltán Radnóczi, Zsolt Endre Horváth, Levente Illés and László Péter Biró
Photonics 2023, 10(11), 1275; https://doi.org/10.3390/photonics10111275 - 17 Nov 2023
Cited by 1 | Viewed by 896
Abstract
Plasmonic metallic nanoparticles, like Au, can be used to tune the optical properties of photonic nanoarchitectures occurring in butterfly wing scales possessing structural color. The effect of the nanoscale Au depends on the location and the amount deposited in the chitin-based photonic nanoarchitecture. [...] Read more.
Plasmonic metallic nanoparticles, like Au, can be used to tune the optical properties of photonic nanoarchitectures occurring in butterfly wing scales possessing structural color. The effect of the nanoscale Au depends on the location and the amount deposited in the chitin-based photonic nanoarchitecture. The following three types of Au introduction methods were compared regarding the structural and optical properties of the resulting hybrid bio-nanocomposites: (i) growth of Au nanoparticles inside the nanopores of butterfly wing scales by a light-induced in situ chemical reduction of HAuCl4 in aqueous solution containing sodium citrate, as a new procedure we have developed, (ii) drop-drying of the aqueous Au sol formed during procedure (i) in the bulk liquid phase, and (iii) physical vapor deposition of Au thin film onto the butterfly wing. We investigated all three methods at two different Au concentrations on the wings of laboratory-bred blue-colored male Polyommatus icarus butterflies and characterized the optical properties of the resulting hybrid bio-nanocomposites. We found that the drop-drying and the in situ growth produced comparable redshift in the spectral position of the reflectance maximum associated with the chitin-based photonic nanoarchitecture in the wing scales, while the 5 nm or 15 nm thick Au layers vacuum deposited onto the butterfly wing behaved like an optical filter, without inducing spectral shift. The in situ growth in the photonic nanoarchitecture under intense illumination produced uniform Au nanoparticles located in the pores of the biological template, which is more advantageous for further applications. An additional benefit of this method is that the Au nanoparticles do not aggregate on drying, like in the case of drop-drying of preformed Au nanoparticles from the citrate-stabilized sol. Full article
(This article belongs to the Special Issue Recent Advances in Micro-Nano Optics)
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11 pages, 3757 KiB  
Communication
Compact Design for Bi-Polarization Quantum Routers on SOI Platform
by Zijie Dai, Eryi Pan, Xuefeng Chen, Xiaoxian Song, Haiting Zhang and Ying Liang
Photonics 2023, 10(8), 897; https://doi.org/10.3390/photonics10080897 - 3 Aug 2023
Viewed by 833
Abstract
An ultra-compact optical quantum router (QR) consisting of a Mach–Zehnder interferometer (MZI) and waveguide tapers is proposed and numerically simulated, using silicon-on-insulator (SOI). The interferometer is designed to work at the center wavelength of 1550 nm with visibilities of 99.65% and 98.80% for [...] Read more.
An ultra-compact optical quantum router (QR) consisting of a Mach–Zehnder interferometer (MZI) and waveguide tapers is proposed and numerically simulated, using silicon-on-insulator (SOI). The interferometer is designed to work at the center wavelength of 1550 nm with visibilities of 99.65% and 98.80% for TE and TM polarizations, respectively. Using the principle of phase compensation and self-image, the length of the waveguide tapers is shortened by an order of magnitude with the transmission above 95% for both TE and TM polarizations. Furthermore, polarization beam splitters (PBS) with an ultra-compact footprint of 1.4 × 10.4 μm2 with transmissions of 98% for bi-polarizations are achieved by introducing anisotropic metamaterials. The simulated results indicate that the interferometer facilitates low loss, a broad operating spectral range, and a large tolerance to size variation in fabrications. The optical switch possesses the routing function while maintaining the polarization states, which promises to pave the point-to-point BB84 protocol into applications of network-based quantum communication. Full article
(This article belongs to the Special Issue Recent Advances in Micro-Nano Optics)
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13 pages, 6932 KiB  
Article
Temperature Self-Adaptive Ultra-Thin Solar Absorber Based on Optimization Algorithm
by Jian Chen, Xin Li, Yutai Chen, Zhaojian Zhang, Yang Yu, Xin He, Huan Chen, Junbo Yang, Zhenfu Zhang and Xiaopeng Yao
Photonics 2023, 10(5), 546; https://doi.org/10.3390/photonics10050546 - 9 May 2023
Cited by 3 | Viewed by 1053
Abstract
In solar applications, the solar absorber is paramount to converting solar radiation to heat energy. We systematically examined the relationship between the efficiency of the solar absorber and operating temperature and other factors. By combining inverse designs with surface plasmonic and Fabry-Perot cavity [...] Read more.
In solar applications, the solar absorber is paramount to converting solar radiation to heat energy. We systematically examined the relationship between the efficiency of the solar absorber and operating temperature and other factors. By combining inverse designs with surface plasmonic and Fabry-Perot cavity solar absorption theories, we have developed several solar absorber devices with excellent performance at different temperatures. One of these devices displays a solar spectral absorption of 95.6%, an ultra-low emission rate of 5.7%, and optical-to-thermal conversion efficiency exceeding 90%, all within an ultra-thin depth of 0.45 μm under working temperatures of 600 K. The device has the potential to surpass the Shockley-Queisser limit (S-Q limit) in solar power generation systems. Our method is adaptable, enabling the design of optimal-performance devices to the greatest extent possible. The design was optimized using modern optimization algorithms to meet complex conditions and offers new insights for further study of the conversion from solar to thermal energy and the advancement of solar energy applications. Full article
(This article belongs to the Special Issue Recent Advances in Micro-Nano Optics)
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17 pages, 5171 KiB  
Article
An Ultra-Low-Loss Waveguide Based on BIC Used for an On-Chip Integrated Optical Gyroscope
by Zhenkun Yuan, Jian Chen, Dingbo Chen, Shuolong Zhu, Junbo Yang and Zhenrong Zhang
Photonics 2023, 10(4), 453; https://doi.org/10.3390/photonics10040453 - 14 Apr 2023
Viewed by 2638
Abstract
The development of integrated optical technology and the continuous emergence of various low-loss optical waveguide materials have promoted the development of low-cost, size, weight, and power optical gyroscopes. However, the losses in conventional optical waveguide materials are much greater than those in optical [...] Read more.
The development of integrated optical technology and the continuous emergence of various low-loss optical waveguide materials have promoted the development of low-cost, size, weight, and power optical gyroscopes. However, the losses in conventional optical waveguide materials are much greater than those in optical fibers, and different waveguide materials often require completely different etching processes, resulting in severely limited gyroscope performance, which is not conducive to the monolithic integration of gyroscope systems. In this paper, an ultra-low-loss Archimedean spiral waveguide structure is designed for an on-chip integrated optical gyroscope by using the high Q value and low-loss optical characteristics of the bound state in the continuum (BIC). The structure does not require the etching of high-refractive-index optical functional materials, avoiding the etching problem that has been difficult to solve for a long time. In addition, the optical properties of the BIC straight and the BIC bent waveguide are simulated using the finite element method (FEM) to find the waveguide structural parameters corresponding to the BIC mode, which is used to design the integrated sensing coil and analyze the gyroscope performance. The simulation results show that the gyroscope’s sensitivity can reach 0.6699°/s. This research is the first time a BIC optical waveguide has been used for an integrated optical gyroscope, providing a novel idea for the monolithic integration of optical gyroscopes. Full article
(This article belongs to the Special Issue Recent Advances in Micro-Nano Optics)
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