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Recent Advances in Optical and Optoelectronic Sensors
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Recent Advances in Optical and Optoelectronic Sensors

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Optical Sensors".

Deadline for manuscript submissions: closed (25 February 2023) | Viewed by 5415

Special Issue Editor

Dr. Grzegorz Fusiek

E-Mail Website
Guest Editor
Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow G1 1XW, UK
Interests: photonic sensors; sensor networks; interrogation techniques; distributed sensing; remote monitoring; photonic instrumentation for industrial applications
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Over the last several decades, optical and optoelectronic sensors have been successfully utilized in different industrial applications across many sectors, including electrical power, oil and gas, as well as nuclear and civil engineering. They are valuable tools in physical, chemical, and biomedical applications, offering a number of benefits over their conventional equivalents, including their light weight, small size, wide bandwidth, high accuracy, immunity to electromagnetic interference and galvanic isolation, and multiplexability. Many optical sensing technologies have matured to the degree that they meet the relevant industry standards, providing a direct replacement for their conventional counterparts offering passive measurements over long distances and improvements in measurement quality overcoming the current technology limitations ensuring safety, reliability, and security in data communication. They have been successfully applied in harsh environments where their conventional equivalents are not suitable due to the operational constraints.

This Special Issue aims to present the latest research advances in the field of optical and optoelectronic sensors, distributed sensing, sensor networks, and their applications in various industry sectors. The Special Issue will additionally focus on new sensor designs, fabrication methods, sensing techniques, and system architectures to achieve improved measurement accuracy, resolution, and unique functionality. Authors are invited to submit both reviews and original research articles describing recent progress in optical and optoelectronic sensors.

Topics of interest include but are not limited to:

  • Polarimetric, interferometric, and intensity sensors;
  • Fiber Bragg grating sensors;
  • Novel concepts in photonic sensing;
  • Design and development of novel optical and optoelectronic sensors;
  • Sensor fabrication and packaging;
  • Sensor interrogation techniques;
  • Sensor multiplexing;
  • Sensor networks;
  • Sensor characterization and performance evaluation;
  • Remote and distributed sensing;
  • Harsh environment sensing;
  • Optical and optoelectronic sensors for industrial applications.

Dr. Grzegorz Fusiek
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. Sensors is an international peer-reviewed open access semimonthly 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 2600 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.

Published Papers (3 papers)

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Research

11 pages, 4447 KiB  
Article
Research on Electro-Optical Characteristics of Infrared Detectors with HgCdTe Operating at Room Temperature
by Paweł Madejczyk, Tetiana Manyk and Jarosław Rutkowski
Sensors 2023, 23(3), 1088; https://0-doi-org.brum.beds.ac.uk/10.3390/s23031088 - 17 Jan 2023
Cited by 3 | Viewed by 1558
Abstract
This paper presents a thorough analysis of the current–voltage characteristics of uncooled HgCdTe detectors optimized for different spectral ranges. HgCdTe heterostructures were grown by means of metal–organic chemical vapor deposition (MOCVD) on GaAs substrates. The obtained detector structures were measured using a Keysight [...] Read more.
This paper presents a thorough analysis of the current–voltage characteristics of uncooled HgCdTe detectors optimized for different spectral ranges. HgCdTe heterostructures were grown by means of metal–organic chemical vapor deposition (MOCVD) on GaAs substrates. The obtained detector structures were measured using a Keysight B1500A semiconductor device analyser controlled via LabVIEW for automation. The experimental characteristics were compared with numerical calculations performed using the commercial platform SimuAPSYS (Crosslight). SimuAPSYS supports detector design and allows one to understand different mechanisms occurring in the analysed structures. The dark current density experimental data were compared with theoretical results at a temperature of 300 K for short, medium, and long wavelength infrared ranges. The dark current density of detectors optimized for different wavelengths was determined using various generation–recombination mechanisms. Proper matching between experimental and theoretical data was obtained by shifting the Shockley–Read–Hall carrier lifetime and the Auger–1 and Auger–7 recombination rates. Exemplary spectral responses were also discussed, giving a better insight into detector performance. The matching level was proven with a theoretical evaluation of the zero-bias dynamic resistance–area product (R0A) and the current responsivity of the designed detectors. Full article
(This article belongs to the Special Issue Recent Advances in Optical and Optoelectronic Sensors)
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8 pages, 1314 KiB  
Communication
A Quantum Ring Laser Gyroscope Based on Coherence de Broglie Waves
by Byoung S. Ham
Sensors 2022, 22(22), 8687; https://0-doi-org.brum.beds.ac.uk/10.3390/s22228687 - 10 Nov 2022
Cited by 1 | Viewed by 1600
Abstract
In sensors, the highest precision in measurements is given by vacuum fluctuations of quantum mechanics, resulting in a shot noise limit. In a Mach–Zenhder interferometer (MZI), the intensity measurement is correlated with the phase, and thus, the precision measurement (Δn) [...] Read more.
In sensors, the highest precision in measurements is given by vacuum fluctuations of quantum mechanics, resulting in a shot noise limit. In a Mach–Zenhder interferometer (MZI), the intensity measurement is correlated with the phase, and thus, the precision measurement (Δn) is coupled with the phase resolution (Δφ) by the Heisenberg uncertainty principle. Quantum metrology offers a different solution to this precision measurement using nonclassical light such as squeezed light or higher-order entangled-photon pairs, resulting in a smaller Δφ and sub-shot noise limit. Here, we propose another method for the high precision measurement overcoming the diffraction limit in classical physics, where the smaller Δφ is achieved by phase quantization in a coupled interferometric system of coherence de Broglie waves. For a potential application of the proposed method, a quantum ring laser gyroscope is presented as a quantum version of the conventional ring laser gyroscope used for inertial navigation and geodesy. Full article
(This article belongs to the Special Issue Recent Advances in Optical and Optoelectronic Sensors)
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16 pages, 9846 KiB  
Article
Single- and Double-Comb Tilted Fibre Bragg Grating Refractive Index Demodulation Methods with Fourier Transform Pre-Processing
by Sławomir Cięszczyk, Krzysztof Skorupski and Patryk Panas
Sensors 2022, 22(6), 2344; https://0-doi-org.brum.beds.ac.uk/10.3390/s22062344 - 18 Mar 2022
Cited by 6 | Viewed by 1529
Abstract
The development of fibre optic sensors for measuring the refractive index is related to the creation of new periodic structures and demodulation algorithms for the measured spectrum. Recently, we proposed a double-comb Tilted fibre Bragg grating (DCTFBG) structure. In this article, we analyse [...] Read more.
The development of fibre optic sensors for measuring the refractive index is related to the creation of new periodic structures and demodulation algorithms for the measured spectrum. Recently, we proposed a double-comb Tilted fibre Bragg grating (DCTFBG) structure. In this article, we analyse such a structure for measuring the refractive index in comparison to a single classical structure. Increasing the number of modes causes a significant change in the Fourier spectrum of optical spectra. For the purpose of data pre-processing, we propose the Fourier Transform as a filtering method in the frequency domain. Then, we analyse separately the band-filtered optical spectra for several frequency ranges. For quantitative analysis, we use algorithms that use quantitative changes in the transmission, i.e., the method of the envelope and the length of the spectrum contour. We propose the use of the Hilbert transform as the envelope method. The second type of algorithms used are methods determining the shift of spectrum features along the wavelength axis. The method of determining the centre of gravity of the area bounded by the envelope and the maximum of the second derivative of the smoothed cumulative spectrum contour length is proposed here. Using the developed methods, the measurement resolution was achieved at the level of 2 × 10−5 refractive index unit. Full article
(This article belongs to the Special Issue Recent Advances in Optical and Optoelectronic Sensors)
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