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

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

Deadline for manuscript submissions: closed (20 June 2025) | Viewed by 3296

Special Issue Editor

Dr. Lige Liu

E-Mail Website
Guest Editor
School of Physics, Peking University, No. 5 Summer Palace Road, Haidian District, Beijing 100084, China
Interests: quantum dots; perovskites; fluorescence imaging and spectroscopy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

A significant area of research in micro/nano-optics and photonics is interactions between structures and light on a micro/nanoscale, which is fundamental for the fabrication of micro/nanomaterials or structures and the construction of micro/nanodevices.

We are pleased to invite you to contribute research on interactions between micro/nanostructures and light. This includes an exploration of new physical principles and fabrication methods for micro/nanostructures, as well as their application as functional devices.

This Special Issue aims to present original research articles dealing with micro/nanomaterials, structures and devices. Original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

  • Nanocrystals
  • Perovskites
  • Low-dimensional structures
  • Laser writing
  • Photolithography
  • Meta-surfaces
  • Microcavities
  • Microlasers, microlens, etc.
  • Microspectroscopy
  • Photonic crystal
  • Light field regulation

We look forward to receiving your contributions.

Dr. Lige Liu
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 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

  • nanocrystals
  • perovskites
  • low-dimensional structures
  • laser writing
  • photolithography
  • meta-surfaces
  • microcavities
  • microlasers, microlens, etc.
  • microspectroscopy
  • photonic crystal
  • light field regulation

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  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
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  • Reprint: MDPI Books provides the opportunity to republish successful Special Issues in book format, both online and in print.

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

Published Papers (3 papers)

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Research

14 pages, 2247 KiB  
Article
Design and Simulation of Optical Waveguide Digital Adjustable Delay Lines Based on Optical Switches and Archimedean Spiral Structures
by Ting An, Limin Liu, Guizhou Lv, Chunhui Han, Yafeng Meng, Sai Zhu, Yuandong Niu and Yunfeng Jiang
Photonics 2025, 12(7), 679; https://doi.org/10.3390/photonics12070679 - 5 Jul 2025
Viewed by 222
Abstract
In the field of modern optical communication, radar signal processing and optical sensors, true time delay technology, as a key means of signal processing, can achieve the accurate control of the time delay of optical signals. This study presents a novel design that [...] Read more.
In the field of modern optical communication, radar signal processing and optical sensors, true time delay technology, as a key means of signal processing, can achieve the accurate control of the time delay of optical signals. This study presents a novel design that integrates a 2 × 2 Multi-Mode Interference (MMI) structure with a Mach–Zehnder modulator on a silicon nitride–lithium niobate (SiN-LiNbO3) heterogeneous integrated optical platform. This configuration enables the selective interruption of optical wave paths. The upper path passes through an ultralow-loss Archimedes’ spiral waveguide delay line made of silicon nitride, where the five spiral structures provide delays of 10 ps, 20 ps, 40 ps, 80 ps, and 160 ps, respectively. In contrast, the lower path is straight through, without introducing an additional delay. By applying an electrical voltage, the state of the SiN-LiNbO3 switch can be altered, facilitating the switching and reconfiguration of optical paths and ultimately enabling the combination of various delay values. Simulation results demonstrate that the proposed optical true delay line achieves a discrete, adjustable delay ranging from 10 ps to 310 ps with a step size of 10 ps. The delay loss is less than 0.013 dB/ps, the response speed reaches the order of ns, and the 3 dB-EO bandwidth is broader than 67 GHz. In comparison to other optical switches optical true delay lines in terms of the parameters of delay range, minimum adjustable delay, and delay loss, the proposed optical waveguide digital adjustable true delay line, which is based on an optical switch and an Archimedes’ spiral structure, has outstanding advantages in response speed and delay loss. Full article
(This article belongs to the Special Issue Recent Advances in Micro/Nano-Optics and Photonics)
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15 pages, 3999 KiB  
Article
Zoom Auxiliary Imaging Lens Design for a Modulation Transfer Function Test System
by Yicheng Sheng, Sihan Xu, Caishi Zhang, Binghua Su, Dingxiang Cao and Zhe Chen
Photonics 2025, 12(1), 53; https://doi.org/10.3390/photonics12010053 - 9 Jan 2025
Viewed by 831
Abstract
In this paper, we propose a zoom auxiliary imaging lens based on the four-component mechanical zoom method for a modulation transfer function (MTF) test system. The auxiliary imaging lenses of the current MTF test system typically use fixed-focus optical systems, which are unable [...] Read more.
In this paper, we propose a zoom auxiliary imaging lens based on the four-component mechanical zoom method for a modulation transfer function (MTF) test system. The auxiliary imaging lenses of the current MTF test system typically use fixed-focus optical systems, which are unable to meet the test scenarios of fast and batch measurement and measure lenses with an extensive focal length range. Compared with the fixed-focus auxiliary imaging lens, the zoom auxiliary imaging lens can simultaneously satisfy the measurement of wide-angle and telephoto miniature lenses without losing measurement accuracy. The entrance pupil distance of the zoom lens is greater than that of traditional lenses, and it is constant for each focal length of the zoom lens. The zoom lens uses an intermediate real image surface to obtain the perfect image quality and lower the diameter of the rear group. Additionally, the zoom lens dynamically adjusts magnification to optimize image size and align with the detector’s pixel resolution, thereby preventing undersampling and enhancing measurement precision. The optical design is optimized for stability, delivering high resolution and minimal aberrations across the zoom range. The image quality of the zoom lens is nearly at the diffraction limit at each focal length, which significantly reduces the impact of the auxiliary lens on MTF test results, enhancing both flexibility and accuracy. This design is particularly well suited for testing miniature lenses in optoelectronic technology applications. Full article
(This article belongs to the Special Issue Recent Advances in Micro/Nano-Optics and Photonics)
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17 pages, 7091 KiB  
Article
High-Efficiency and High-Monochromaticity Semitransparent Organic Solar Cells Based on Optical Tamm States
by Junwei Zhao, Senxuan Lin, Jinxin Zhou, Fuhao Gao, Jingfeng Liu, Yongbing Long and Haitao Xu
Photonics 2024, 11(11), 1030; https://doi.org/10.3390/photonics11111030 - 1 Nov 2024
Cited by 1 | Viewed by 1347
Abstract
Semitransparent organic solar cells (ST-OSCs) have garnered more interest and stand out as promising candidates for next-generation solar energy harvesters with their unique advantages. However, challenges remain for the advancement of colorful ST-OSCs, such as enhancing the light absorption and transmittance without considerable [...] Read more.
Semitransparent organic solar cells (ST-OSCs) have garnered more interest and stand out as promising candidates for next-generation solar energy harvesters with their unique advantages. However, challenges remain for the advancement of colorful ST-OSCs, such as enhancing the light absorption and transmittance without considerable power conversion efficiency (PCE) losses. Herein, an optical analysis of silver (Ag) electrodes and one-dimensional photonic crystals (1DPCs) was conducted by simulations, revealing the presence of optical Tamm states (OTSs) at the interface of Ag/1DPCs. Furthermore, the spectral and electrical properties were fine-tuned by modulating the OTSs through theoretical simulations, utilizing PM6:Y6 as the active layer. The structural parameters of the ST-OSCs were optimized, including the Ag layer thickness, the central wavelength of 1DPCs, the first WO3 layer thickness, and the pair number of WO3/LiF. The optimization resulted in the successful development of blue, violet-blue, and red ST-OSC devices, which exhibited transmittance peak intensities ranging from 31.5% to 37.9% and PCE losses between 1.5% and 5.2%. Notably, the blue device exhibited a peak intensity of 37.0% and a PCE of 15.24%, with only a 1.5% loss in efficiency. This research presents an innovative approach to enhancing the performance of ST-OSCs, achieving a balance between high transparency and high efficiency. Full article
(This article belongs to the Special Issue Recent Advances in Micro/Nano-Optics and Photonics)
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