Article
Optics
Haiyang Wang, Chams Baker, Liam Kelly, Pedro Tovar, Liang Chen, Xiaoyi Bao
Summary: This paper proposes highly sensitive broadband ultrasound sensors based on fused dual-core chalcogenide-polymethyl methacrylate (As2Se3-PMMA) microfibers. The ultrasound response is determined by the differential slope of the transmission spectra in the dual-core microfiber, and the sensing of ultrasound waves with and without an aluminum plate is demonstrated. A broadband frequency range and high signal-to-noise ratio (SNR) are achieved in the compact fused dual-core As2Se3-PMMA microfiber ultrasound sensor.
Article
Multidisciplinary Sciences
Lijing Zheng, Miaomiao Zhu, Baohu Wu, Zhaoling Li, Shengtong Sun, Peiyi Wu
Summary: A coaxial wet-spinning process was used to fabricate intrinsically stretchable, highly conductive, and conductance-stable liquid metal sheath-core microfibers, which can be stretched up to 1170% and maintain high conductivity with minimal resistance change. These microfibers can be woven into everyday gloves or fabrics, serving as efficient joule heaters, electrothermochromic displays, and self-powered wearable sensors for monitoring human activities.
Article
Engineering, Electrical & Electronic
Felipe Oliveira Barino, Renato Faraco-Filho, Deivid Campos, Vinicius N. H. Silva, Andres P. Lopez-Barbero, Leonardo de Mello Honorio, Alexandre Bessa dos Santos
Summary: The use of a long-period fiber grating (LPG) array to monitor the loading condition of a structure has shown high accuracy in estimating force position and intensity. This method was tested on a simply-supported beam model and provides a new approach for real-time structural health monitoring.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Zhengyu Yan, Caoyuan Wang, Ruowei Yu, Zixian Hu, Limin Xiao
Summary: Graphitic carbon nitride (g-CN) nanosheet coated microfibers exhibit significantly enhanced relative humidity optical sensing capabilities with fast response time and excellent stability, making them promising for environmental and biological humidity sensing applications.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Automation & Control Systems
Xiantao Sun, Wenjie Chen, Xiaoyu Xiong, Weihai Chen, Yan Jin
Summary: This article presents a novel variable configuration approach to develop an adjustable-resolution force sensor with a compact force-sensitive structure. By measuring the displacement of the deformed structure using a precision optical linear encoder, the external force can be detected. The variable measuring range and force resolution are achieved through the continuous adjustment of structural stiffness.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Automation & Control Systems
Babar Jamil, Youngjin Choi
Summary: This article presents a new sensing method for pneumatic artificial muscle actuators, utilizing soft optical waveguides designed to measure contraction and force under loaded conditions. The proposed method allows for highly sensitive actuator systems with linear contraction sensing, and the sensorized PAMs are capable of working in high-pressure applications with repeated use without significant degradation in signal quality. Characterization and validation of this method are conducted through the plotting and modeling of characteristic curves for two PAM actuators, with control validation provided by feedback from measured sensor data to the controller.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2021)
Article
Engineering, Electrical & Electronic
Shuai Qu, Zengguang Qin, Yanping Xu, Zhenhua Cong, Zequn Wang, Zhaojun Liu
Summary: The performance of optical frequency domain reflectometry (OFDR) has been experimentally analyzed and compared with image processing methods to extend the strain measurement range up to 7000 microstrain with a 4 mm spatial resolution, overcoming limitations of traditional processing methods. Wavelet transform is discussed in detail to determine the suitable decomposition level in OFDR data processing scheme, providing a new idea to achieve wide strain measurement range in OFDR system.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Review
Engineering, Electrical & Electronic
Max Yiye Cao, Stephen Laws, Ferdinando Rodriguez y Baena
Summary: Six-axis force/torque sensors are widely used in robotic systems, primarily based on detecting strains in elastic structures. While there have been no significant improvements in measurement errors in recent years, researchers have made progress in fault tolerance, alternative sensing techniques, cost reduction, and miniaturization.
IEEE SENSORS JOURNAL
(2021)
Article
Physics, Fluids & Plasmas
Benjamin Frey, Patrick Snyder, Klaus Ziock, Ali Passian
Summary: The fiber Bragg grating (FBG) is studied for its spectral properties in sensing applications and emerging quantum squeezing and solitons. Despite the complex response of FBG sensors to external stimuli, there is no known analytical solution. By presenting a solid mechanics model and computing the optical modes and their behavior induced by temperature and stress, this problem is addressed.
Article
Engineering, Electrical & Electronic
Lorenzo Tozzetti, Tommaso Barsanti, Fabrizio Gambini, Gianluigi Manzo, Stefano Filippi, Luca Matteucci, Ivano Izzo, Fabrizio Di Pasquale, Stefano Faralli
Summary: The study measured strain in a gasoline direct injector during a single injection process using a fiber Bragg grating sensor. The results highlighted the effectiveness of dynamic strain measurements and the importance of understanding the injector's behavior during spray injection.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Shuting Liang, Jie Li, Fengjiao Li, Liang Hu, Wei Chen, Chao Yang
Summary: This study demonstrates the preparation of flexible and intelligent liquid metal fibers with high conductivity. These fibers can be used in intelligent wearable fabrics and sensor fields, providing high-performance strain sensing and bending detection capabilities.
Article
Optics
Leticia Avellar, Anselmo Frizera, Eduardo Rocon, Arnaldo Leal-Junior
Summary: This study presents the development, characterization, and analysis of an intensity variation-based polymer optical fiber force sensor using CYTOP fiber embedded in different materials. Results show that the sensor response is related to the elastic modulus of the materials, with different sensitivities observed. The sensor system has potential applications in stiffness assessment in users and real-time estimation of soft tissues.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
S. Sridhar, Suneetha Sebastian, Ajay K. Sood, Sundarrajan Asokan
Summary: The paper reports a comprehensive study on MoS2 nanolayer coated etched Fiber Bragg Grating (eFBG) strain sensor, demonstrating high sensitivity, linearity, and potential for various applications. The coating technique enables direct control over the thickness of MoS2, leading to consistent and repeatable sensing performance.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Manh-Tuan Ha, Chul-Goo Kang
Summary: This study introduces a user-friendly and cost-effective wireless six-axis force/torque (F/T) sensor for force control and monitoring applications. An innovative elastic structure is used to overcome reliability and high machining cost issues. The sensor features economical analog/digital signal processing circuits and a user-friendly embedded wireless communication module.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Siying Lu, Huan Zhu, Le Song, Yelong Zheng, Fengzhou Fang
Summary: This paper presents a vision-based contact adhesion measurement method that can measure the contact image and adhesion force on soft matter surfaces from the perspective of indentation direction. The method uses a 7.6 mm diameter probe coupled with a flexible fiber, making it similar to a miniaturized endoscope, allowing for local adhesion force measurement of soft tissues.
Article
Multidisciplinary Sciences
Shuangyi Linghu, Zhaoqi Gu, Jinsheng Lu, Wei Fang, Zongyin Yang, Huakang Yu, Zhiyuan Li, Runlin Zhu, Jian Peng, Qiwen Zhan, Songlin Zhuang, Min Gu, Fuxing Gu
Summary: The study introduces an earthworm-like peristaltic crawling motion mechanism to manipulate and position metal nanowires in non-liquid environments. This technique offers benefits like high precision, low power consumption, and autonomous parking, paving the way for full integration of various functional photonic components.
NATURE COMMUNICATIONS
(2021)
Article
Optics
Renhong Gao, Ni Yao, Jianglin Guan, Li Deng, Jintian Lin, Min Wang, Lingling Qiao, Wei Fang, Ya Cheng
Summary: We demonstrate integrated lithium niobate (LN) microring resonators with high Q factors close to the material absorption limit. The microrings are fabricated on thin LN film wafers using chemo-mechanical etching, resulting in ultra-smooth interfaces and no ion-induced lattice damage. The microrings exhibit an ultralow waveguide propagation loss, enabling applications in integrated quantum light source, frequency comb generation, and nonlinear optical processes.
CHINESE OPTICS LETTERS
(2022)
Article
Optics
Shuhao Wang, Ni Yao, Wei Fang, Limin Tong
Summary: A polarization-independent up-conversion protocol for single-photon detection at the telecom band is proposed, using a single thin-film periodically poled lithium niobate waveguide. By selecting proper waveguide parameters, the waveguide dispersion can compensate for crystal birefringence, enabling simultaneous fulfillment of quasi-phase-matching conditions for transverse electric and transverse magnetic modes within a single poling period. With this scheme, randomly-polarized single photons at 1550 nm can be up-converted with a normalized conversion efficiency of 163.8%/W cm(2).
Article
Nanoscience & Nanotechnology
Haitao Liu, Xingda Song, Xiaoyu Wang, Shuhao Wang, Ni Yao, Xiong Li, Wei Fang, Limin Tong, Lei Zhang
Summary: A dual-modal sensor inspired by the somatosensory system of human skin is reported. It is capable of detecting finger approaching and touching by measuring relative humidity and force-triggered light intensity variations. The sensor achieves continuous detection of finger movements, including approaching, contacting, pressing, releasing, and leaving, with features like fast response, high sensitivity, and wide working range.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Dongdong Chen, Hairui Lei, Chenqi Zhu, Xing Chen, He Tian, Wei Fang, Haiyan Qin, Xiaogang Peng
Summary: In this study, pre-synthesized CdSe/CdS core/shell quantum dots were fused together in solution to form CdS nanoplatelets with multiple embedded CdSe quantum dots. The resulting structure exhibited homogeneous-free optical properties and demonstrated unique and complex excitonic characteristics.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Optics
Luqing Shao, Hao Wu, Wei Fang, Limin Tong
Summary: Optical nanofiber-based single-photon source has the property of seamless integration with a single-mode fiber and can greatly enhance the single-photon collection efficiency through nanostructure engraving. This study demonstrates a simple method of achieving a high single-photon coupling efficiency of 54.2% by placing a quantum emitter in the gap of two parallel nanofibers, which is insensitive to the discrepancy in nanofiber radii and reduces the difficulties in device fabrication.
Article
Optics
Ni Yao, Xiaoyu Wang, Shuqi Ma, Xingda Song, Shan Wang, Zhangxing Shi, Jing Pan, Shipeng Wang, Jianliang Xiao, Haitao Liu, Longteng Yu, Yao Tang, Zhang Zhang, Xiong Li, Wei Fang, Lei Zhang, Limin Tong
Summary: This study presents the design and fabrication of a flexible optical microfiber sensor for simultaneous temperature and pressure measurement. The sensor exhibits high temperature sensitivity and fast temporal response, making it suitable for real-time skin temperature and pulse waveform measurements.
PHOTONICS RESEARCH
(2022)
Article
Multidisciplinary Sciences
Ning Zhou, Yuxin Yang, Xin Guo, Jue Gong, Zhangxing Shi, Zongyin Yang, Hao Wu, Yixiao Gao, Ni Yao, Wei Fang, Pan Wang, Limin Tong
Summary: This study reports the direct observation of lasing in microfiber-coupled single plasmonic nanoparticles enabled by strong mode coupling. The results show that single-mode laser emission from the nanoparticles can be achieved at room temperature with low threshold and narrow linewidth.
Article
Optics
Jianbin Zhang, Yi Kang, Xin Guo, Yuhang Li, Keying Liu, Yu Xie, Hao Wu, Dawei Cai, Jue Gong, Zhangxing Shi, Yingying Jin, Pan Wang, Wei Fang, Lei Zhang, Limin Tong
Summary: Micro/nanofibres (MNFs) drawn from silica fibres have been extensively studied for various applications, and we demonstrate high-power low-loss continuous-wave (CW) optical waveguiding in MNFs around 1550 nm. We achieved waveguiding of optical power over 10 W in a pristine MNF with a diameter down to 410 nm, which is significantly higher than previous demonstrations. We also predict an optical damage threshold of 70 W. Furthermore, we show high-speed optomechanical driving of microparticles and higher second harmonic generation efficiency in high-power CW waveguiding MNFs. These findings have implications for both scientific research and technological applications in high-power MNF optics.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Physics, Applied
Yuan-Hao Yang, Xin-Biao Xu, Jia-Qi Wang, Mai Zhang, Ming Li, Zheng-Xu Zhu, Zhu-Bo Wang, Chun-Hua Dong, Wei Fang, Huakang Yu, Guang-Can Guo, Chang-Ling Zou
Summary: This study investigates the nonlinear coupling between on-chip confined optical modes and free-space continuum modes. The experiment observed the radiation of second-harmonic wave caused by pump fields in integrated lithium niobate microcavities. The mechanism of nonlinear optical radiation (NOR) is further verified by demonstrating the difference frequency generation between a free-space input and an on-chip pump field. The revealed mechanism of NOR has universal applicability for dielectric photonic integrated devices, allowing for spatial engineering of optical fields and light sources.
PHYSICAL REVIEW APPLIED
(2023)
Article
Optics
Wen Yu, Ni Yao, Jing Pan, Wei Fang, Xiong Li, Limin Tong, Lei Zhang
Summary: This research presents a highly sensitive and fast response optical strain sensor with potential applications in electronic skins, wearable medical devices, and robots. The sensor demonstrates a high gauge factor and strain resolution, enabling it to be used for various purposes such as physiological signal monitoring, voice recognition, and micro-displacement detection.
OPTO-ELECTRONIC ADVANCES
(2022)
Article
Chemistry, Physical
Likang Zhou, Junhao Fei, Wei Fang, Luqing Shao, Qianjiang Liu, Huiwen He, Meng Ma, Yanqin Shi, Si Chen, Xu Wang
Summary: Different from traditional concept, true colors that can be precisely controlled are obtained by changing the volume fraction deviation. The tunable photonic bandgap varies linearly in the visible region by controlling the volume fraction of two building blocks. The stability of photonic pigments is improved by utilizing the metastable structures of red photonic pigment.
NANOSCALE HORIZONS
(2022)
Article
Optics
Jintian Lin, Saeed Farajollahi, Zhiwei Fang, Ni Yao, Renhong Gao, Jianglin Guan, Li Deng, Tao Lu, Min Wang, Haisu Zhang, Wei Fang, Lingling Qiao, Ya Cheng
Summary: In this study, single-frequency ultranarrow linewidth lasers were achieved on erbium ion-doped lithium niobate microdisks through excitation of high-Q polygon modes, resulting in a significantly reduced linewidth. Moreover, real-time electro-optical tuning of the microlasers was demonstrated using the strong linear electro-optic effect of LN.
ADVANCED PHOTONICS
(2022)
Article
Physics, Multidisciplinary
Pei Si-Hui, Song Zi-Xuan, Lin Xing, Fang Wei
Summary: This review discusses the importance of the interaction between light and matter using open Fabry-Perot cavities. It introduces the basic properties and fabrication techniques of these cavities, and presents recent progress in weak coupling, strong coupling, and bad emitter regimes. The challenges and perspectives in this field are also discussed.
ACTA PHYSICA SINICA
(2022)
Proceedings Paper
Engineering, Manufacturing
Min Wang, Zhiwei Fang, Jia Qi, Junxia Zhou, Zhe Wang, Rongbo Wu, Renhong Gao, Ni Yao, Sanaul Haque, Saeed Farajollahi, Jintian Lin, Wei Fang, Tao Lu, Wei Chu, Ya Cheng
Summary: Through femtosecond laser micromachining, we have successfully developed integrated photonic devices and microfluidic chips with unprecedented characteristics and performances, demonstrating specific applications such as ultra-high Q microresonators and micro-chemical reactors. These achievements are the result of persistent efforts to improve precision and efficiency in ultrafast laser processing.
LASER APPLICATIONS IN MICROELECTRONIC AND OPTOELECTRONIC MANUFACTURING (LAMOM) XXVI
(2021)
Article
Optics
Hang Dong, Zhixin Sun, Jingyi Li, Yahui Li, Wei Zhang, Guangyong Jin
Summary: This paper calculates thermal stresses and adsorption forces to determine laser cleaning conditions and establishes relevant models. Experimental results show that the removal effect is better with increasing nanosecond pulse delay, with the best effect achieved at 600 milliseconds pulse delay. Based on the findings, the mechanisms of oxide film removal involve thermal stress against adsorption and plasma shock wave breaking the oxide layer.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Junjie Zhang, Wenjun Li, Bingtao Li, Zheng-Da Hu, Jicheng Wang, Feng Zhang, Lei Wang
Summary: A multilayer thin film device structure based on Tamm plasmons is proposed for high-performance near-infrared hot electron photodetectors. By optimizing the device structure parameters, high responsivity detection can be achieved.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Hong Huang, Zhiguang Han
Summary: This paper proposes a new ghost imaging reconstruction method using ordered orthogonal Hadamard derived speckle as the illumination speckle series, and introduces the alternating direction multiplier method to improve the imaging performance. The evaluation results show that the method can achieve high-quality reconstructed images under low sampling conditions.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Moritsugu Sakamoto, Yuki Ono, Kohei Noda, Tomoyuki Sasaki, Nobuhiro Kawatsuki, Masayuki Tanaka, Hiroshi Ono
Summary: The effect of wavelength and polarization of illuminating light in polarization imaging for birefringent objects placed behind a scattering structure was experimentally investigated. The result shows that the spatial distribution of the birefringent object was more clearly visualized in the longer wavelength combined with circularly polarized light illumination. This finding indicates the potential of using polarization imaging with circularly polarized light illumination in the near-infrared range for visualizing birefringent objects with scattering.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Peihui Du, Hongfang Wang, Pengwei Li, Rukeyemuhan Abadula, Hmbat Batelbek, Min Gao
Summary: In this study, we theoretically demonstrate the strong coupling between Tamm plasmons and exciton polaritons in metal Al/DBR-molecular structures, extending the operating wavelength to the deep ultraviolet region. The coupling strength can be effectively manipulated by adjusting the structure parameters, offering potential benefits for the development of new-style optical filters.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Priyanka Chaudhary, Akhilesh Kumar Mishra
Summary: We design and numerically investigate the switching dynamics between two outer waveguides in a parity-time (PT)-symmetric adiabatically coupled three waveguides nonlinear directional coupler (NLDC) system. The study shows that the device can provide switching even when the middle waveguide is nonlinear and the outer waveguides are linear. Furthermore, the effect of loss to gain ratio on critical switching power and the impact of launched light power and gain (loss) value on transmitted power are also studied.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Wei Feng, Yongcong Yi, Shuyang Li, Zhi Xiong, Boya Xie, Zhen Zeng
Summary: Traditional imaging techniques are ineffective in achieving clear underwater imaging due to the presence of scattering media. Single-pixel imaging (SPI) system based on Unet++ offers a solution for reconstructing high-quality images in highly turbid water environments.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Xiaorui Qu, Jufeng Zhao, Haijun Tian, Junjie Zhu, Guangmang Cui
Summary: This paper studies the structural similarity between RGB and spectral images and proposes a non-iterative Images Structure Similarity (ISS) method for fast reconstruction of spectral images. Additionally, the input of the Deep Image Prior (DIP) method is optimized for the first time by using the initial spectral data reconstructed by ISS, leading to an improved starting value for the iteration. The experimental results show that the proposed method can enhance the reconstruction quality in both spectral and spatial resolutions, while significantly reducing the reconstruction time compared to other DIP-based methods.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Donghe Sheng, Zhe Han, Zanyang Qiao, Tianpei Dong, Chenxi Wang, Huiping Tian
Summary: In this study, a distributed multi-parameter sensor based on an etched few-mode multi-core fiber is proposed, allowing simultaneous sensing of temperature, strain, and sample refractive index. By combining space division multiplexing and stimulated Brillouin scattering, the sensor achieves high sensitivity in detecting these parameters.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Dehao Chen, Zhenwu Mo, Zehong Liang, Junjie Jiang, Huilin Tang, Yidan Sun, Ziyu Wang, Quanfeng Wei, Yanru Chen, Dongmei Deng
Summary: In this study, a novel family of elliptical Airyprime vortex beams (EAPVBs) is introduced, which inherits the excellent self-focusing properties of the circular Airyprime vortex beam (CAPVB). The asymmetric focusing of EAPVB leads to some novel properties, such as the splitting of high-order optical vortex and the formation of two foci. By taking advantage of these properties, EAPVB is constructed as a tunable optical bottle for particle capture.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Xiao Ma, Qiongchan Shao, Jian-Jun He
Summary: In this study, an SHS chip based on Su8 waveguide was designed and fabricated. By physically adjusting the metal electrodes and compensating for transmissivity fluctuations, the generation of side ripples was successfully suppressed.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Hongbin Zhang, Jiansen Du, Zongtao Chi, Hailin Cong, Bin Wang
Summary: In this paper, a novel type of dual-wavelength confocal metalens is proposed to solve the spatial crosstalk between two wavelengths. The metalens can greatly reduce the spatial crosstalk and achieve high precision and efficiency in confocal imaging. It can also focus light in specific wavelength ranges, making it suitable for imaging, microscopy, and optical fiber communication.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Rui Qiu, Guanmao Zhang, Shaokai Du, Jie Liu, Hongyu Jib, Kaiyun Bi, Bochuan Xing, Guangchao Diao
Summary: Recent research has developed an achromatic metalens that shows potential for replacing traditional lenses. This study focuses on a continuously variable focus height broadband achromatic metalens for long-wavelength infrared applications. By optimizing materials and parameters, chromatic aberration is effectively corrected, making it suitable for high-resolution LWIR imaging and spectroscopy systems.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Marcos Troncoso-Costas, Gaurav Jain, Yiming Li, Mohammed Patel, Lakshmi Narayanan Venkatasubramani, Sean O'Duill, Frank Smyth, Andrew Ellis, Francisco Diaz-Otero, Colm Browning, Liam Barry
Summary: In this work, a fast-switching tuneable laser capable of wide wavelength coverage, low noise and linewidth levels suitable for high-order modulation formats is demonstrated. The laser is characterized to cover a wavelength range of 35 nm in the C-band with nanosecond switching time. It is used to successfully demonstrate 480 Gbit/s 16QAM transmission over 25 km of single-mode fiber for a wavelength range of 19 nm.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Takeshi Moriyasu, Masahiko Tani, Hideaki Kitahara, Takashi Furuya, Jessica Afalla, Toshiro Kohmoto, Daishiro Koide, Hiroki Sato, Mitsutaka Kumakura
Summary: Optical pump-terahertz probe spectroscopy was used to study the photocarrier dynamics and optical characteristics of semiconductor Si. The results showed that the thickness of Si influenced the transmitted terahertz field amplitude and peak delay time, indicating differences in photocarrier dynamics between different Si materials.
OPTICS COMMUNICATIONS
(2024)
