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State-of-the-Art Optical Sensors Technology in China 2024–2025

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

Deadline for manuscript submissions: 30 December 2025 | Viewed by 828

Special Issue Editors


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Guest Editor
State Key Laboratory of Modern Optical Instrumentation, Institute for Advanced Photonics, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
Interests: optoelectronic devices; photovoltaic; photoelectric detection; X-ray detection and light emitting devices; spectral technologies and optoelectronic semiconductor materials
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Guest Editor
National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu-Tian Road, Shanghai 200083, China
Interests: microelectronics and solid-state electronics; condensed matter physics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The development of information technology relies on the advancement of optical sensors. In this Special Issue, we will focus on State-of-the-Art Optical Sensor Technology in China. This Special Issue will cover all aspects of optical sensing materials, devices, and systems, including, but not limited to, topics such as photodetectors, optical-fiber-based sensors, Lidar, optical sensing and imaging for biomedical applications, advanced microscopy, advanced imaging technology, sensor networks, infrared light field control, multimode infrared detection, etc.

Following the success of our previous Special Issue, titled “State-of-the-Art Optical Sensor Technology in China”, we would like to once again invite our colleagues to contribute their expertise, insights, and findings in the form of original research articles and reviews for publication in the current Special Issue, titled “State-of-the-Art Optical Sensor Technology in China (2024–2025)”.

Prof. Dr. Yang Yang
Dr. Yan Huang
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. 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.

Keywords

  • photodetectors
  • optical-fiber-based sensors
  • lidar
  • advanced microscopy

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Published Papers (1 paper)

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Research

12 pages, 4447 KiB  
Article
Solar-Blind Ultraviolet Four-Quadrant Detector and Spot Positioning System Based on AlGaN Diodes
by Longfei Peng, Shangqing Li, Yong Huang and Yang Yang
Sensors 2025, 25(7), 2206; https://doi.org/10.3390/s25072206 - 31 Mar 2025
Viewed by 271
Abstract
The four-quadrant detector (4QD), as a highly sensitive and fast-response position-sensitive device, is widely used in laser guidance, target tracking, and related fields. However, traditional visible and infrared 4QDs exhibit significant vulnerability to ambient light interference, particularly under high-intensity background illumination. To address [...] Read more.
The four-quadrant detector (4QD), as a highly sensitive and fast-response position-sensitive device, is widely used in laser guidance, target tracking, and related fields. However, traditional visible and infrared 4QDs exhibit significant vulnerability to ambient light interference, particularly under high-intensity background illumination. To address this issue, this paper presents a solar-blind ultraviolet (UV) 4QD and a spot positioning system based on AlGaN diodes, achieving a UV/visible suppression ratio of 2.17 × 104 (without solar-blind filters). The system employs a high-linearity, low-noise capacitive transimpedance amplifier (CTIA) as the readout circuit for the high-sensitivity and rapid-response solar-blind UV detectors, enabling the precise conversion of weak photocurrent signals into voltage signals for digitization. Utilizing a third-order polynomial least-squares fitting algorithm without introducing complex filtering techniques, the system achieves a maximum positioning error of 0.0101 mm and a root-mean-square error (RMSE) of 0.0057 mm, among of one the best-performing solar-blind UV 4QDs. The experimental results demonstrate exceptional spot positioning performance under a 275 nm laser source, meeting the high-precision requirements for space target detection. This research provides a reference for the application of solar-blind UV 4QDs in positioning, alignment, and monitoring scenarios, thereby holding significant practical implications. Full article
(This article belongs to the Special Issue State-of-the-Art Optical Sensors Technology in China 2024–2025)
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