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Optics, Volume 7, Issue 3

2026 June - 15 articles

Cover Story: A reconfigurable intelligent surface (RIS)-assisted modulating retroreflector (MRR) underwater optical wireless communication system is proposed to improve link reliability in challenging underwater environments. An optical transceiver communicates with an MRR terminal through both direct and RIS-assisted optical paths, providing propagation diversity when line-of-sight conditions deteriorate. The RIS-equipped underwater vehicle adaptively redirects optical signals to enhance link availability and signal quality. Selection combining and maximum ratio combining are employed to exploit multipath reception and improve communication performance. Results demonstrate reduced outage probability and bit-error rate, as well as increased channel capacity compared with conventional direct-link systems, enabling more reliable and efficient underwater wireless networks. View this paper
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Articles (15)

  • Article
  • Open Access
772 Views
16 Pages

A Scanning Focal-Point Method for Enhancing the Signal Stability of Laser-Induced Acoustic Communication

  • Changfei Yang,
  • Zhuang Liu,
  • Jiuhe Wei,
  • Shuwan Yu,
  • Qiang Fu and
  • Chao Wang

18 June 2026

Laser-induced acoustic communication is a highly adaptable cross-medium technique that combines the advantages of optical transmission through air and acoustic transmission underwater. However, poor signal stability at high repetition frequencies cur...

(This article belongs to the Section Laser Sciences and Technology)
  • Article
  • Open Access
990 Views
15 Pages

4 June 2026

All-cellulose composite (ACC) films, with their excellent tunable optical and mechanical properties, combined with biodegradability, represent a highly promising material for applications in the packaging and flexible electronics sectors. The optical...

  • Article
  • Open Access
1,425 Views
18 Pages

Quantitative Pulse-Shape-Instability Analysis Using 2D-Runs FROG

  • Pedram Abdolghader,
  • Rana Jafari,
  • Abinash Das,
  • Bilol Banerjee,
  • Elouan P. Duchrist Crews and
  • Rick Trebino

3 June 2026

We present a method for quantifying ultrashort pulse-shape instability in a train of pulses using multi-shot second-harmonic-generation frequency-resolved optical gating (SHG FROG). All versions of multi-shot FROG have previously shown the ability to...

(This article belongs to the Section Laser Sciences and Technology)
  • Article
  • Open Access
745 Views
11 Pages

Estimation of the Tilt Angle of an Etalon with an Ensemble of Artificial Neural Networks

  • José Carmen Morales-Castro,
  • Everardo Vargas-Rodriguez,
  • Rafael Guzman-Cabrera,
  • Ana Dinora Guzman-Chavez,
  • Juan José Paniagua-Medina and
  • Sergio Ivan Ramirez-Zavala

2 June 2026

In this work, it is demonstrated that the tilt angle of an etalon can be determined by analyzing some features of an intensity distribution pattern (interferogram) with machine learning algorithms. These features present a strong nonlinear relationsh...

(This article belongs to the Special Issue Optical Sensors: Features and Applications)
  • Article
  • Open Access
728 Views
19 Pages

V-Shaped Liquid Crystal: Structural Variation on Phase Transition

  • Rajni Chaudhary,
  • Ashok Singh Bahota,
  • Neelam Agrawal,
  • Arti Yadav,
  • Ayush Shukla,
  • Veena Prasad,
  • Alejandro Pedro Ayala,
  • Swapnil Singh and
  • Poonam Tandon

29 May 2026

Bent-core liquid crystals are renowned for their remarkable optical and ferro-electrical properties, making them highly sought after for various applications. However, to harness their full potential, a thorough understanding of their structural mech...

(This article belongs to the Special Issue Multimodal Vibrational Spectroscopy and Laser Applications in Molecular and Material Research)
  • Article
  • Open Access
790 Views
21 Pages

Optical System of a Prism–Grating Short-Wave Infrared Spectrometer for Single-Pixel Imaging

  • Yuxuan Meng,
  • Xiaoyang Pan,
  • Mingzhong Pan,
  • Jin Yang and
  • Hongxing Qi

29 May 2026

To circumvent the prohibitive cost of large-format infrared focal plane arrays and the significant spatial–spectral mismatch caused by spectral smile in conventional long-slit configurations, this work develops a low-cost short-wave infrared (S...

(This article belongs to the Topic Optical and Laser Scanning: Systems and Applications)
  • Article
  • Open Access
1,423 Views
15 Pages

Benchmarking Focus Metrics for Microparticle Localization in In-Line Digital Holography

  • Brandon R. Sulvarán-Salmoreno,
  • David Moreno-Hernández and
  • Diego Torres-Armenta

29 May 2026

Accurate axial localization of microparticles is a key requirement in in-line digital holography (ILDH), particularly under noisy conditions and for weakly scattered objects. This work presents experimental and simulated benchmarking of three widely...

(This article belongs to the Special Issue Advances in Biophotonics Using Optical Microscopy Techniques)
  • Article
  • Open Access
1 Citations
1,743 Views
15 Pages

Energy, Momentum, and Angular Momentum of Non-Diffracting Tricomi Beams

  • Junting He,
  • Xinyu Liu,
  • Donglin Fan,
  • Yuhang Xu,
  • Wenjuan Zhao and
  • Zhiwei Cui

27 May 2026

In this work, we report a theoretical study of the energy, momentum, and angular momentum of non-diffracting Tricomi beams. By utilizing the vector potential in the Lorenz gauge, we derive the explicit analytical expressions for the electric and magn...

  • Article
  • Open Access
755 Views
22 Pages

Design of Multichannel Solitonic Neurons

  • Alessandro Bile and
  • Eugenio Fazio

26 May 2026

We propose and analyze a new class of photonic neurons based on spatial solitons generated in photorefractive media. They are designed to operate entirely within the optical domain. By engineering single-node and multi-node multichannel architectures...

(This article belongs to the Section Engineering Optics)
  • Article
  • Open Access
742 Views
17 Pages

A Visual Recognition Method for Stacked Plates Based on Deep Learning

  • Xikuan Wu,
  • Qian Zhang,
  • Hongying Ma,
  • Zhanwei Li,
  • Chenghai Pan and
  • Wenchang Zhang

25 May 2026

This paper addresses the problem of counting stacked components in industrial scenarios and proposes a method that combines close-range scanning for complete contour acquisition with deep learning for quantity recognition: The contour acquisition sys...

  • Communication
  • Open Access
502 Views
10 Pages

25 May 2026

The teaching of chaos and nonlinear dynamics remains a significant challenge in physics education, as these concepts are often introduced through abstract mathematical models that are difficult to visualize. In this work, we propose an experimental a...

  • Article
  • Open Access
1 Citations
1,903 Views
19 Pages

Vector Vortices in Linear Optical Media

  • Boris Dobrev,
  • Aneliya Dakova-Mollova,
  • Valeri Slavchev,
  • Diana Dakova,
  • Zara Kasapeteva and
  • Lubomir Kovachev

15 May 2026

The present work investigates the linear regime of propagation of modulated vector optical fields in isotropic dispersive media by focusing on the formation of complex vector vortex structures with amplitude-type singularities. A mathematical algorit...

(This article belongs to the Section Photonics and Optical Communications)
  • Article
  • Open Access
856 Views
17 Pages

30 April 2026

The development of efficient, single-phase-excitable white-light phosphors remains a critical challenge for solid-state lighting applications. In this work, white-light-emitting CaWO4:Eu3+/g-C3N4 composites were successfully developed by integrating...

  • Article
  • Open Access
890 Views
24 Pages

29 April 2026

Reconfigurable intelligent surfaces (RISs) have recently attracted attention as a potential solution for improving the reliability of optical wireless communication links, especially when direct transmission (DT) becomes severely degraded due to dyna...

(This article belongs to the Section Photonics and Optical Communications)
  • Article
  • Open Access
797 Views
13 Pages

Femtosecond Laser Microfabrication and Magnetic Manipulation of Functional Magnetic Microspheres

  • Jingwen Wang,
  • Shuang Zhang,
  • Wei Cheng,
  • Zhixue Xing,
  • Shengying Fan,
  • Galina Melnikova,
  • Vasilina Lapitskaya,
  • Shoufa Di and
  • Jincheng Ni

24 April 2026

The precise fabrication and controllable actuation of magnetic microspheres hold significant application value in biomedicine, microfluidic chips and other fields. Based on femtosecond laser two-photon polymerization technology (FLTPP), two methods a...

(This article belongs to the Topic Optical and Laser Scanning: Systems and Applications)
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Optics - ISSN 2673-3269