Article
Engineering, Electrical & Electronic
Guanghao Dai, Dan Su, Xueguang Qiao
Summary: This study proposes and demonstrates a suspended fiber-optic Fabry-Perot interferometer for sensitivity-improved high-pressure measurement. By changing the length ratio, the sensitivity can be controlled and the advantages and accuracy of this technology are demonstrated through experiments.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Engineering, Electrical & Electronic
Yanping Chen, Junxian Luo, Shen Liu, Mengqiang Zou, Shengzhen Lu, Yong Yang, Changrui Liao, Wenjie Feng, Yiping Wang
Summary: By reducing the material volume of the air cavity with asymmetrical tapered fiber and splicing/tapering the fiber at the misaligned center of the cavity, high-sensitive strain sensors are fabricated. Experimental results indicate that the asymmetrical tapered fiber leads to higher strain sensitivity, along with the advantages of repeatability, sensitivity, and compact size.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Zi-Kang Yin, Ri-Qing Lv, Jun-Yuan Zhang, Jia-Bao Zhou, Cong Liu, Man-Xi Zhang, Jia-Xin Yang
Summary: In this article, a high-sensitivity temperature sensor based on PDMS filled air-cavity fiber FP structure is proposed, which can achieve high-temperature sensitivity in the measurement range of 0 degrees C-40 degrees C with good repeatability and response time.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Engineering, Electrical & Electronic
Daniel Kacik, Ivan Martincek, Juraj Maciak, Matej Goraus
Summary: In this study, a measurement component based on fiber Fabry-Perot interferometer was integrated into a monitoring system for train axle counting. Two sensors with slightly different sensitivities were placed on the foot of the rail, and data was collected during train passage on a regional railway line. The results showed that regardless of train speed and sensor sensitivity, the system was able to accurately determine the number of axles and provide information on the vehicle's technical condition through the analysis of noise levels in the trace.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Engineering, Electrical & Electronic
Xue Zhou, Xuegang Li, Shuguang Li, Xin Yan, Xuenan Zhang, Fang Wang, Takenobu Suzuki, Yasutake Ohishi, Tonglei Cheng
Summary: The ultra-compact optical fiber temperature sensor proposed is based on the Fabry-Perot interference principle and fabricated using a simple dipping method. It has a high sensitivity, good linearity, stability, wide detection range, and short response time, making it suitable for real-time temperature detection in various environments.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
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
Xinruo Yi, Kehao Zhao, Kevin P. Chen
Summary: This work presents multiplexable fiber optical sensors for multiple-point pH measurements. By using a femtosecond laser direct writing approach, an array of intrinsic Fabry-Peirot interferometer (IFPI) sensors was inscribed in standard single-mode fibers. A sol-gel dip coating process was employed to deposit Palladium-doped Titanium Dioxide (Pd-TiO2) sensory film on IFPI sensors for pH measurement, while an uncoated sensor was used to measure temperature of aquatic solutions to eliminate the influence of temperature fluctuation on pH measurements. Pd nanoparticles in the sensory films act as a catalyst to convert hydrogen ions in aquatic solutions to Pd hydride, which produces strains on IFPI sensors. White light interferometry demodulation algorithm was applied to resolve the strain exerted on IFPI sensors induced by pH value changes in aquatic solution. The presented sensor exhibited reversible and reproducible response in aquatic solutions with pH values ranging from 1.0 to 7.0 at room temperature. The response time of the pH sensors was approximately 7 seconds for all measurements conducted. The technology demonstrated in this paper has the potential to perform multi-point pH and temperature measurements using a single fiber.
IEEE SENSORS JOURNAL
(2022)
Article
Optics
Liang He, Amei Zhang, Honglai Yan, Lijuan Ma, Xiyuan Wei, Na Liao, Wei Wang, Honglu Hou
Summary: A novel self-correlation algorithm is proposed for accurately determining the cavity lengths of fiber-optic FP sensors through transforming reflection spectrum into optical frequency domain and self-correlating with different frequency values. The high resolution measurement of cavity length was successfully achieved, and the feasibility and performance of the method were verified through simulation and experiment.
Article
Engineering, Electrical & Electronic
Guozhao Wei, Qi Jiang
Summary: A novel approach for fiber optics shape sensing is presented, using a kinematic model based on rotation vector to predict trajectory and reconstruct complex spatial curves for mini-invasive bio-medical devices. The use of compact Fabry-Perot interferometer (FPI) provides high strain sensitivity, low temperature sensitivity, and ultra-low cost for curvature sensing, showing higher sensitivity and lower cross sensitivity compared to fiber Bragg grating.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Hui Li, Jiasheng Ni, Qingchao Zhao, Liyuan Jiang
Summary: Amorphous carbon films were prepared on the surface of capillaries used for fabricating optical fiber Fabry-Perot (FP) cavity pressure sensors through pulsed laser deposition and annealing. The surface morphology of coated and annealed carbon films was investigated, revealing that surface modification smoothed the irregular particles and released stress induced by carbon and nickel deposition and welding. Performance tests showed that the surface-modified pressure sensors exhibited good linearity and cavity length stability, making them suitable for long-term pressure sensing applications.
IEEE SENSORS JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Cheng Zhou, Qian Zhou, Chong He, Jiajun Tian, Yunxu Sun, Yong Yao
Summary: A crosstalk-free fiber optic sensor for simultaneous measurement of refractive index (RI) and temperature was proposed and experimentally demonstrated based on an internal-and-external-cavity Fabry-Perot interferometer (IECFPI) model. The sensor utilizes silica and open cavities in its design, and achieves high sensitivity for both RI and temperature measurements by monitoring wavelength shifts. Experimental results showed promising RI and temperature sensitivities, making the sensor a potential candidate for applications in the food industry and environment monitoring.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Rodolfo Martinez-Manuel, Jonathan Esquivel-Hernandez, Sophie LaRochelle
Summary: A novel method is presented to reduce the nonlinearity effect of a wavelength scanning diode laser in a low-reflectivity Fabry-Perot interferometer. The proposed method improves system resolution and achieves a temperature insensitive sensing system. It is demonstrated by measuring the thermo-optic coefficient of liquid samples and presenting long-term performance experimental results.
IEEE SENSORS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Bin Liu, Xiqu Zhang, Ailin Wang, Yufeng Liu, Yan Wang, Mingguang Shan, Lei Liu, Peng Jin, Zhi Zhong
Summary: This manuscript proposes, fabricates, and tests optical fiber Fabry-Perot acoustic sensors based on corrugated PET diaphragms. Different depths of corrugations were introduced into the PET by a simple hot-embossing process. The results show that corrugations can effectively enhance sensor performance, and the fabrication method demonstrates simplicity and cost-effectiveness. The acoustic sensors demonstrate flexible control of corrugated structure and are suitable for weak acoustic sensing.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Luo Wang, Rui Zhou, Min Li, Ming-Yu Li, Xiaoyan Wen, Haifei Lu
Summary: This study investigates the spectral characteristics of a fiber optic Fabry-Perot sensor and provides a simple analytical formula for simulating the reflected spectrum. The asymmetry shapes observed in practical experiments can be diversified by adjusting the refined parameters. Experimental and simulated results demonstrate that the spectral characteristics can be changed by using a composite film on the fiber tip. Additionally, a fiber-based miniature Fabry-Perot interferometer is fabricated to sense static pressure.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Dajuan Lyu, Jiankun Peng, Qing Huang, Wei Zheng, Liangming Xiong, Minghong Yang
Summary: An optical fiber Fabry-Perot interferometer based on sapphire wafer is designed and fabricated for high-temperature sensing under Co-60 gamma irradiation. The sensor undergoes temperature cycle tests up to 800 degrees C and demonstrates excellent sensing performance at high temperature, with a high sensitivity of 29.9 pm/degrees C at 800 degrees C. This sensor has the potential to be applied under strong irradiation and high temperature environments.
IEEE SENSORS JOURNAL
(2021)
Article
Optics
Kit Pan Wong, Hyun-Tae Kim, Keshav Rajasekaran, Amirhossein Yazdkhasti, Bala Sai Sudhakar, An Wang, Samuel E. Lee, Kenneth Kiger, James H. Duncan, Miao Yu
Summary: This paper reports the research on high-speed and large dynamic range spectral domain interrogation of fiber-optic Fabry-Perot interferometric sensors, and verifies the performance advantages of this method through experiments.
Article
Engineering, Multidisciplinary
Keshav Rajasekaran, Hyung Dae Bae, Sarah Bergbreiter, Miao Yu
Summary: This paper presents the development of a micro-scale artificial hair sensor for small-scale unmanned air vehicles. The sensor utilizes a high-aspect ratio hair structure and a thin flexible membrane to transduce directional airflow. Capacitive sensing and orthogonal electrodes are employed for airflow direction detection. Experimental results show good agreement with simulations and the sensor is capable of detecting flow separation.
BIOINSPIRATION & BIOMIMETICS
(2022)
Article
Mechanics
An Wang, Kit Pan Wong, Miao Yu, Kenneth T. Kiger, James H. Duncan
Summary: This study experimentally investigates the impact of flexible rectangular aluminum plates on a still water surface. By collecting measurements under different experimental conditions, it is found that the response characteristics of the plates vary with the plate stiffness ratio. Under low plate stiffness conditions, the plate deflection shows a consistent pattern over time, while under high plate stiffness conditions, the response is strongly dependent on the plate stiffness ratio, indicating the presence of dynamic plate response and a two-way fluid-structure interaction.
JOURNAL OF FLUID MECHANICS
(2022)
Article
Engineering, Electrical & Electronic
Hyun-Tae Kim, Miao Yu
Summary: We report an ultracompact on-fiber multiparameter sensor that employs multiple guided-wave surface plasmon resonances and machine learning based signal processing. The sensor is capable of simultaneous measurement of multiple parameters and utilizes a neural network model to enhance the sensing accuracy. A proof-of-concept sensor using a UV-curable polymer as a waveguide material is demonstrated for simultaneous measurement of temperature and salinity of salt solutions.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Instruments & Instrumentation
Jonathan Kordell, Miao Yu, Abhijit Dasgupta
Summary: A surface-mounted fiber optic conjugate stress sensor (FOCSS) was developed to accurately evaluate the instantaneous tangent modulus of metals and measure their elastic-plastic stress-strain behavior. The sensor demonstrated the ability to detect instantaneous modulus during plastic deformation of materials.
SMART MATERIALS AND STRUCTURES
(2022)
Article
Optics
David Yun, Ryan K. Cole, Nathan A. Malarich, Sean C. Coburn, Nazanin Hoghooghi, Jiwen Liu, Jacob J. France, Mark A. Hagenmaier, Kristin M. Rice, Jeffrey M. Donbar, Gregory B. Rieker
Summary: This study demonstrates the advantages of laser absorption spectroscopy with mode-locked frequency combs in accurately measuring mass flux across large open areas. The use of dual-frequency comb spectroscopy allows for simultaneous measurement of all components of mass flux with low uncertainty and spatial resolution.
Article
Materials Science, Multidisciplinary
Liuxian Zhao, Chuanxing Bi, Miao Yu
Summary: In this paper, the feasibility of using the Rays Inserting Method (RIM) to design structural components for flexural wave manipulation was investigated. By designing variable thickness structures and studying their effectiveness, the RIM was shown to be effective in controlling flexural wave propagation.
RESULTS IN PHYSICS
(2022)
Article
Engineering, Mechanical
Liuxian Zhao, Chuanxing Bi, Miao Yu
Summary: This article reports on a lens design based on a concentric circular structure with continuous variation in thickness, which can achieve triple focusing and three-beam splitting. By changing the lens thickness profile, the positions of focal points and directions of collimated beams can be adjusted. This design has broadband capability and is also a compact and simple design.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Mechanical
Liuxian Zhao, Changquan Lai, Miao Yu
Summary: This paper proposes a novel gradient index (GRIN) structural lens based on the concept of generalized Luneburg lens (GLL). The lens achieves ultralong focusing by realizing double foci and localization of energy flow between the two focal spots. The lens consists of two concentric circular regions with varying thickness and refractive indices, which can be tailored for different applications.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Proceedings Paper
Engineering, Marine
Xiaomin Lin, Nitesh Jha, Mayank Joshi, Nare Karapetyan, Yiannis Aloimonos, Miao Yu
Summary: Oysters are important for cleaning the oceans, but their population is declining rapidly due to over-harvesting. With the advancement of automation and AI, robots can play a crucial role in environmental monitoring and oyster reef preservation. To overcome the challenges in the underwater environment, a simulated environment is proposed to improve oyster reef monitoring and create photo-realistic image datasets.
2022 OCEANS HAMPTON ROADS
(2022)
Proceedings Paper
Engineering, Marine
Tianchen Liu, Miao Yu, Nikhil Chopra
Summary: This paper aims to address the navigation problem in confined environments like caves by implementing learning-based neural network models for AUV to learn from human actions. The Girona underwater dataset was used to train two deep neural network models, which achieved relatively high accuracy for the navigation task.
2022 OCEANS HAMPTON ROADS
(2022)
Article
Acoustics
Liuxian Zhao, Timothy Horiuchi, Miao Yu
Summary: This study investigates the use of the acoustic Luneburg Lens as a design framework for guiding acoustic wave propagation. A novel waveguide device based on cascaded ALLs is proposed and experimental results confirm the accuracy of numerical simulations and theoretical calculations.
JASA EXPRESS LETTERS
(2022)
Proceedings Paper
Automation & Control Systems
Lasitha Weerakoon, Zepeng Ye, Rahul Subramonian Bama, Elisabeth Smela, Miao Yu, Nikhil Chopra
Summary: This paper explores integrated estimation and control of soft robots, introducing a new method of estimating curvature using stretchable sensing skin. The study includes uni-directional and bi-directional bending of soft robots, and demonstrates successful curvature tracking control through integrated soft sensing skin.
2021 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION (ICRA 2021)
(2021)
Proceedings Paper
Automation & Control Systems
Behzad Sadrfaridpour, Yiannis Aloimonos, Miao Yu, Yang Tao, Donald Webster
Summary: Oysters play a crucial role in the Chesapeake Bay ecosystem, improving water quality and leading to various restoration programs. Advancements in robotics and artificial intelligence have enabled the use of ROVs to monitor and track oysters, potentially revolutionizing aquaculture practices. This study focuses on videography of the Chesapeake Bay bottom, oyster database construction, and the use of Mask R-CNN for oyster detection and counting in videos.
2021 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION (ICRA 2021)
(2021)
Article
Acoustics
Liuxian Zhao, Timothy Horiuchi, Miao Yu
Summary: In this paper, a gradient index acoustic metamaterial is proposed based on the concept of the optical modified generalized Luneburg lens (MGLL), achieving double-foci and high energy density acoustic jet between the foci. Numerical simulation results demonstrate ultra-long acoustic jets with a length of up to 30 2 can be realized with this design.
JASA EXPRESS LETTERS
(2021)
