Article
Optics
Kejun Shang, Ming Lei, Haowei Li, Tianqi Zhang, Xiaozhi Yu, Qiang Xiang, Yonglin Na, Lizhe Zhang
Summary: This study presents a novel interferometric fiber optic gyroscope (IFOG) utilizing an integrated optical chip, application-specific integrated circuit, and small-diameter sensing coil. The prototype has an overall size of 30 mm x 30 mm x 30 mm and weighs 68 g, making it the smallest closed-loop IFOG currently known. Static experiments demonstrate that the bias stability of the integrated IFOG closely matches the theoretical accuracy limit determined by the fiber coil, meeting the requirements of near-navigation-grade compact inertial navigation systems.
CHINESE OPTICS LETTERS
(2022)
Article
Optics
Xin Liu, Ruohui Wang, Fengyi Chen, Xueguang Qiao
Summary: We propose and demonstrate a novel method for improving the sensitivity of fiber-optic interferometric accelerometers based on multi-core fiber space division multiplexing technology. In this method, MCF is used to replace the single-mode fiber as the sample arm of the conventional interferometers. The proposed accelerometer has a working frequency bandwidth from 0.5 Hz to 90 Hz, and achieves a 5-fold sensitivity enhancement from 191.15 rad/g for single-core to 965.25 rad/g at 80 Hz. The multicore fiber solution can be an universal method to enhance acceleration sensitivity of all interferometric accelerometers. Moreover, the same sensitivity of the sensors can be achieved by using shorter length of MCF, which can further reduce the size of three-components accelerometers.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Zhiyu Guo, Jing Jin, Xiaowei Wang, Ningfang Song, Jingming Song, Xiaobin Xu, Zuchen Zhang
Summary: This article proposes a novel three-axis interferometric fiber optic gyroscope (IFOG) with an integrated coupler chip (ICC) fabricated on the silica platform. The test results show that the ICC has weak wavelength dependence and comparatively low insertion loss at 0.85 μm wavelength. With approximately 900 m of polarization-maintaining fiber coils, the three-axis IFOG exhibits a long-term stability of <0.16 degrees/h, satisfying the requirements of tactical grade systems. The novel IFOG scheme with ICC paves the way for research on chip-scale multiaxis IFOGs.
IEEE SENSORS JOURNAL
(2023)
Article
Optics
Jianuo Wang, Xinlei Zhou, Yongfei Miao, Gaocheng Jiang, Lili Tong, Pengcheng Tao, Qingxu Yu, Wei Peng
Summary: In this paper, an integrated and compact fiber-optic CTD sensor for simultaneous measurement of ocean temperature, salinity, and pressure is proposed. Experimental results demonstrate high sensitivity, high resolution, high reliability, anti-electromagnetic interference, compact size, and low cost of the proposed sensor.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Optics
Monserrat Alonso-Murias, David Monzon-Hernandez, Enrique Antonio-Lopez, Axel Schulzgen, Rodrigo Amezcua-Correa, Joel Villatoro
Summary: A nano-displacement sensing method based on an extrinsic hybrid fiber Fabry-Perot interferometer is proposed, achieving a resolution of 0.47 nm. By adjusting the optical path length difference between the air cavity and glass cavity, an interference spectra envelope with a larger period can be generated.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Xiaoli Zhang, Xinlei Zhou, Shuo Wang, Pengcheng Tao, Fengxiang Ma, Qingxu Yu, Wei Peng
Summary: This article presents a miniature fiber optic transverse load sensor based on a bubble microcavity. It features small size, low cost, easy fabrication, high sensitivity, and low temperature sensitivity, making it highly promising for transverse load sensing.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Review
Chemistry, Analytical
Malgorzata Szczerska
Summary: Temperature measurements are of great importance in various fields, and fiber optic sensors can provide real-time temperature control in difficult-to-reach areas, reducing costs in polymer technology.
Article
Engineering, Electrical & Electronic
Akihito Matsuo, Miyuki Kadokura, Hiroshi Yamazaki, Michiko Nishiyama, Kazuhiro Watanabe
Summary: This paper presents a novel cantilever type accelerometer using mirror-terminated hetero-core optical fiber for machinery fault diagnosis. The sensor demonstrated stable sensitivities in detecting fiber beam deflections and reproduced waveforms of input vibrations. Finite element simulations showed that sensor performance can be optimized by varying the fiber beam length.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Lianjin Hong, Mingze Wu, Yongyao Chen, Yue Li
Summary: This study presents a low-cost and simple fiber optic cantilever accelerometer with a spherical tip based on Gaussian beam focusing. Experimental results show improved sensitivity and performance of the accelerometer, with high signal-to-noise ratio (SNR) and low harmonic distortion. The clever sensor structure has potential for developing high-performance and cost-effective accelerometers and hydrophones.
IEEE PHOTONICS JOURNAL
(2021)
Article
Optics
Jinjian Li, Yi Liu, Yan Li, Zhenrong Zhang, Shiliang Qu
Summary: A label-free concentration sensor for bovine serum albumin (BSA) based on a silica corrosion quantitative monitoring system (SCQMS) is proposed. The anti-resonance of a hollow cylindrical waveguide (HCW) in SCQMS is simulated and investigated for quantitative corrosion rate monitoring. A highly sensitive concentration sensor based on a hole-assisted dual-core fiber (HADF) is also prepared. The sensor exhibits a high sensitivity of 30.04 nm/(mg/mL) and an ultra-low limit of detection (LOD) of 0.05 mg/mL. The SCQMS can be a feasible tool for precise and quantitative corrosion monitoring of silicon structures, and the concentration sensor structure has wide applications due to its ultra-low LOD, simple preparation process, and high integration.
Article
Optics
Huiji Chen, Binbin Luo, Decao Wu, Xiangwen Yang, Shenghui Shi, Xue Zou, Yujie LI, Shanghai Jiang, Mingfu Zhao
Summary: This study proposes a refractive index sensor using a cascaded tapered thin-core microfiber based on the Vernier effect. The sensor provides high sensitivity measurements with a simple structure and low-temperature cross sensitivity, making it suitable for applications in biosensing fields.
Review
Instruments & Instrumentation
Zengling Rani, Xiu He, Yunjiang Rao, Dong Sun, Xiaojuan Qin, Debiao Zeng, Wangwei Chu, Xiankun Li, Yabin Wei
Summary: This paper reviews various types of fiber-optic microstructure sensors, comparing their sensing characteristics and summarizing their advantages, disadvantages, and main sensing parameters. The future development of FOM sensors is also discussed.
Article
Optics
Xinpu Zhang, Xuhui Zhang, Yang Zhang, Wei Peng
Summary: A novel high-temperature resistant, miniature all-fiber interferometer is experimentally demonstrated, which can be formed by an angled fiber without any additional components, exhibiting excellent high-temperature resistance and good sensitivity.
Article
Chemistry, Analytical
Aarathy Ezhuthupally Reghuprasad, Chiara Colombero, Alberto Godio
Summary: This article focuses on the design, optimization, fabrication, and testing of fiber Bragg grating (FBG) cantilever beam-based accelerometers. These FBG accelerometers have advantages such as multiplexing, immunity to electromagnetic interference, and high sensitivity. The experiments show that the optimized system has a resonance frequency of 75 Hz within a measuring range of 5-55 Hz and high sensitivity of +/- 433.7 pm/g. Additionally, a preliminary field test comparing the FBG accelerometer and standard electro-mechanical geophones is conducted, demonstrating the suitability of the FBG accelerometers for seismic acquisitions.
Article
Chemistry, Analytical
Min Guo, Ke Chen, Beilei Yang, Guangyin Zhang, Xinyu Zhao, Chenxi Li
Summary: In this paper, a compact cantilever-enhanced fiber-optic photoacoustic sensor resistant to electromagnetic and ambient noise interference is proposed for all-optical passive detection of CH4 in narrow spaces and harsh environments.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
