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Photonics
Special Issues
Fundamentals, Advances, and Applications in Optical Sensing
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Fundamentals, Advances, and Applications in Optical Sensing

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "Lasers, Light Sources and Sensors".

Deadline for manuscript submissions: 28 February 2025 | Viewed by 4195

Special Issue Editors

Dr. Qirui Wang

E-Mail Website
Guest Editor
Department of Electrical and Computer Engineering, University of Pittsburgh, PA 15261, USA
Interests: optical fiber sensing; optical metrology; system design and prototyping; machine learning; robotics.
Prof. Dr. Kevin P. Chen

E-Mail Website
Guest Editor
Department of Electrical and Computer Engineering, University of Pittsburgh, PA 15261, USA
Interests: integrated photonics system for coherent and incoherent distributed optical sensing; sensor enabled artificial intelligence data analytics and digital twin; femtosecond laser matter interaction for scalable nanofabrication and fiber sensor fabrications; topologic photonics and 3D lightwave circuits for quantum information; photonic integrated circuits for optical sensing; additive manufacturing (AM): sensor fused smart components, AM for laser photonics systems.
Special Issues, Collections and Topics in MDPI journals
Dr. Min Guo

E-Mail Website
Guest Editor
Zhejiang Engineering Research Center of MEMS, Shaoxing University, Shaoxing, Zhejiang 312000, China
Interests: optical fiber sensing; photoacoustic spectroscopy; gas sensor; micro-electro-mechanical system sensor; weak signal analysis.

Special Issue Information

Dear Colleagues,

Optical sensing technology, characterized by its ability to detect and measure light in various environments, stands at the forefront of scientific advancement and application. The dynamic field of optical sensing is revolutionizing how people understand and interact with the environment. By harnessing the properties of light, optical sensors provide a unique lens through which to observe and analyze the physical world, offering non-invasive, real-time data with exceptional accuracy and sensitivity. This compilation of research not only explores the foundational aspects of optical sensing mechanisms but also showcases the latest innovations driving the field forward.

This Special Issue aims to bring outstanding researchers in the field together to highlight the pivotal role of optical sensing in addressing some of today’s most pressing challenges, thereby reinforcing the importance of this research area in paving the way for future scientific and technological breakthroughs. In this Special Issue, original simulation and experimental research articles and reviews are welcome. Research areas may include, but are not limited to, the following: optical sensing, fiber optic sensing, biomedical sensing, distributed sensing, structural health monitoring (SHM), non-destructive testing (NDT), intrusion detection, remote sensing, gas sensing, and optical instrumentation and measurement.

We look forward to receiving your contributions.

Dr. Qirui Wang
Prof. Dr. Kevin P. Chen
Dr. Min Guo
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

  • optical sensing
  • fiber optics
  • optical metrology
  • light detection and ranging (LiDAR)
  • distributed acoustic sensing (DAS)
  • spectroscopy
  • interferometry
  • interrogator

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Published Papers (2 papers)

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14 pages, 2522 KiB  
Article
Quantitative Investigation of Layer-by-Layer Deposition and Dissolution Kinetics by New Label-Free Analytics Based on Low-Q-Whispering Gallery Modes
by Mateusz Olszyna, Algi Domac, Jasmine Zimmer and Lars Dähne
Photonics 2024, 11(11), 1087; https://doi.org/10.3390/photonics11111087 - 19 Nov 2024
Viewed by 397
Abstract
A new instrument for label-free measurements based on optical Low-Q Whispering Gallery Modes (WGMs) for various applications is used for a detailed study of the deposition and release of Layer-by-Layer polymer coatings. The two selected coating pairs interact either via hydrogen bonding or [...] Read more.
A new instrument for label-free measurements based on optical Low-Q Whispering Gallery Modes (WGMs) for various applications is used for a detailed study of the deposition and release of Layer-by-Layer polymer coatings. The two selected coating pairs interact either via hydrogen bonding or electrostatic interactions. Their assembly was followed by common Quartz Crystal Microbalance (QCM) technology and the Low-Q WGMs. In contrast to planar QCM sensor chips of 1 cm, the WGM sensors are fluorescent spherical beads with diameters of 10.2 µm, enabling the detection of analyte quantities in the femtogram range in tiny volumes. The beads, with a very smooth surface and high refractive index, act as resonators for circular light waves that can revolve up to 10,000 times within the bead. The WGM frequencies are highly sensitive to changes in particle diameter and the refractive index of the surrounding medium. Hence, the adsorption of molecules shifts the resonance frequency, which is detected by a robust instrument with a high-resolution spectrometer. The results demonstrate the high potential of the new photonic measurement and its advantages over QCM technology, such as cheap sensors (billions in one Eppendorf tube), simple pre-functionalization, much higher statistic safety by hundreds of sensors for one measurement, 5–10 times faster analysis, and that approx. 25, 000 fewer analyte molecules are needed for one sensor. In addition, the deposited molecule amount is not superposed by hydrated water as for QCM. A connection between sensors and instruments does not exist, enabling application in any transparent environment, like microfluidics, drop-on slides, Petri dishes, well plates, cell culture vasculature, etc. Full article
(This article belongs to the Special Issue Fundamentals, Advances, and Applications in Optical Sensing)
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17 pages, 4985 KiB  
Article
Design of a High-Frame-Rate and Large-Grayscale Simulation Projection System Based on Digital Micromirror Devices
by Lingxuan Meng, Yongqiang Yang, Hongyu Li, Yanfu Tang, Zhongming Li, Ying Qu, Min Zhao and Junlin Li
Photonics 2024, 11(9), 793; https://doi.org/10.3390/photonics11090793 - 26 Aug 2024
Viewed by 3471
Abstract
With the increasing acquisition speed of image sensors, it has become necessary to provide image sources with higher frame rates and grayscale in order to meet testing requirements. In the field of semi-physical simulation projection, digital micromirror devices are often chosen for their [...] Read more.
With the increasing acquisition speed of image sensors, it has become necessary to provide image sources with higher frame rates and grayscale in order to meet testing requirements. In the field of semi-physical simulation projection, digital micromirror devices are often chosen for their high resolution, uniformity, response speed, and energy concentration. In this study, we utilized digital micromirror devices to construct a high-frame-rate and large-grayscale simulation projection system. To achieve our experiment goals, we employed two digital micromirror devices. One DMD was used to modulate the light intensity of the light source, while the other generated images with different bit planes. By projecting the target images onto the image sensor, we were able to achieve a frame rate of 1611 hz for the projected 12-bit image. This system meets the requirements for our experiment design and ensures the accurate testing of image sensors. Full article
(This article belongs to the Special Issue Fundamentals, Advances, and Applications in Optical Sensing)
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