Article
Chemistry, Analytical
Jing Dai, Can Huang, Han Zhang, Ryan Samuel, Yuwen Li, Arul Jayaraman, Paul de Figueiredo, Arum Han
Summary: Microbial interactions within a consortium are important for its functions, and understanding these interactions is essential for engineering specific microbial consortia. A new tool has been developed to manipulate the spatial organization of microorganisms, aiding the investigation of how these interactions contribute to community formation. This method allows for precise control over spatial distances between different cell populations, providing an easier way to study bacterial interactions, particularly those dependent on spatial arrangement.
ANALYTICAL CHEMISTRY
(2022)
Article
Engineering, Electrical & Electronic
Xiamin Leng, Scott S. -H. Yam
Summary: An innovative analytical method for fiber laser beam shaping was explored using mode coupling theory and far field diffraction. A laser beam shaping device based on an optical fiber taper was successfully fabricated and validated, shaping a Gaussian laser beam into a flat-top beam. The calculated amplitude and phase of core and cladding modes matched the experimental results, demonstrating the effectiveness of mode coupling theory and far field diffraction in beam shaping.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2021)
Article
Optics
Xiao-Jun Lin, Yu-Xin Gao, Jin-Gan Long, Jia-Wen Wu, Xiang-Yue Li, Wei-Yi Hong, Hu Cui, Zhi-Chao Luo, Wen-Cheng Xu, Ai-Ping Luo
Summary: Spatial beam self-cleaning in bi-tapered conventional multimode fibers can improve beam quality of high-power lasers, with better spectral broadening effect observed in longer tapered length MMFs. By introducing bi-tapered MMFs, the input beam with poor beam quality from high-power fiber lasers can be converted to a centered, bell-shaped beam in a short length.
Article
Optics
Mehran Soltani, Francesco Da Ros, Andrea Carena, Darko Zibar
Summary: We validate a real-time machine learning framework that controls the pump power values of Raman amplifiers to shape the signal power evolution in two dimensions: frequency and fiber distance. The framework utilizes a convolutional neural network followed by differential evolution to optimize the pump power values and achieve the desired power profiles. The results demonstrate the framework's ability to achieve low maximum absolute error between the obtained and target power profiles, as well as its effectiveness in a multi-objective design scenario with flat gain levels and minimum spectral excursion.
Article
Polymer Science
Daokang Zhang, Xiaoyong Tian, Yanli Zhou, Qingrui Wang, Wanquan Yan, Ali Akmal Zia, Lingling Wu, Dichen Li
Summary: This paper presents the design and fabrication of multilayer truss structures using continuous fiber-reinforced thermoplastic composite 3D printing. The fabricated trusses have high specific stiffness and strength, with the ability to control structural performance through design parameters.
Article
Multidisciplinary Sciences
Qingrui Wang, Xiaoyong Tian, Daokang Zhang, Yanli Zhou, Wanquan Yan, Dichen Li
Summary: By adjusting the off-center distribution of fibers, researchers have successfully integrated 4D printed structures with fully impregnated composite interfaces, enabling programmable deformation ability and high bearing capacity.
NATURE COMMUNICATIONS
(2023)
Article
Cell Biology
Kenth-Arne Hansson, Einar Eftestol
Summary: Many cells exhibit functional plasticity and rely on the regulation of organelles and macromolecules for maintenance. In large cells, organelles need to be properly distributed to provide essential resources and regulate intracellular activities. This study investigates the scaling of gene products and intracellular constituents in skeletal muscle fibers, highlighting the role of the nucleus and the orderly distribution of myonuclei in normal cell physiology.
MOLECULAR BIOLOGY OF THE CELL
(2023)
Article
Ecology
Martina Daniela Camiolo, Ezequiel Cozzolino, Andres Javier Jaureguizar
Summary: In the Rio de la Plata estuary, suspended particulate matter (SPM) and depth are the most important environmental variables influencing the spatial distribution of Micropogonias furnieri population structure. The results show a segregation pattern within the population.
REGIONAL STUDIES IN MARINE SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Wenchao Li, Jiaxin Liu, Shuaichen Li, Quan Chai, Ye Tian, Xuelan He, Xianbin Wang, Yonggui Yuan, Jun Yang, Guoyong Jin, Jianzhong Zhang, Libo Yuan
Summary: This paper presents a novel in-fiber integrated high temperature sensor array with high spatial resolution for online temperature field measurement on a silicon nitride igniter. The sensor array is written by a femtosecond laser in the core of single-mode fiber, and can measure high temperature up to 1000 degrees C with the help of a white light interference demodulation system.
IEEE SENSORS JOURNAL
(2022)
Article
Computer Science, Hardware & Architecture
Changbo Hou, Jie Zhang, Yonggui Yuan, Jun Yang, Libo Yuan
Summary: The PGC demodulation system based on the ellipse fitting algorithm using GNI iteration can accurately estimate geometric parameters to correct nonlinear distortion, providing strong noise resistance and anti-parasitic AM capabilities.
IEEE TRANSACTIONS ON RELIABILITY
(2022)
Article
Optics
Chen Zou, Cuofu Lin, Tieliang Mou, Zhangjun Yu, Yunlong Zhu, Yao Zhu, Fanyang Dang, Yonggui Yuan, Jun Yang, Yuncai Wang, Yuwen Qin
Summary: We present and demonstrate a method based on periodic phase noise estimation in optical frequency domain reflectometry (OFDR) that achieves a beyond 107 range-resolution product (RRP), improving the state-of-the-art by 2.5 times. By employing a moving average filter and a third-order Taylor expansion, this method provides highly precise estimation of periodic phase noise, which is crucial for the performance of OFDR systems with medium-to-long measurement range and submillimeter spatial resolution. The proposed method achieves a spatial resolution of 535 μm over an 8 km measurement range and shows promising potential for fiber network monitoring and sensing applications.
Article
Optics
Shuxian Chen, Liang Zeng, Jiaqi Li, Jun Weng, Junyi Li, Pengbai Xu, Wenjie Liu, Yuehui Sun, Jun Yang, Yuwen Qin, Kunhua Wen
Summary: A hybrid bilayer structure of black phosphorus (BP) and graphene is proposed for achieving plasmon-induced transparency (PIT) with high sensitivity. The study analyzes the surface plasmon hybridization between graphene and anisotropic BP, and describes the PIT effect using the coupled oscillator model. The results show tunable PIT effects and high refractive index sensitivity, which can be used for multiple refractive index sensing functions.
Article
Engineering, Electrical & Electronic
Yibo Zhang, Wei Jin, Yu Zhang, Zhihai Liu, Yonggui Yuan, Zhangjun Yu, Jun Yang, Yuncai Wang, Yuwen Qin
Summary: This paper proposes a fast phase regulation method for the hybrid PDH multiplexing scheme based on space division multiplexing and time division multiplexing. The method allows for the reconstruction of the error signal points required for closed-loop control within a time period of less than 20 us using a phase rotation algorithm. The paper also presents the relationship between the multiplexing scale and parameters selection, showing that the system can achieve a larger multiplexing scale with appropriate parameters selection. A multi-channel strain array with a resolution better than 10 pe/root Hz@1 Hz over a 50 Hz band per channel has been realized, demonstrating its potential usage in the field of large-scale quasi-static strain measurement and earthquake observation.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Optics
Tingyi Zhu, Cuofu Lin, Jun Yang, Zhangjun Yu, Pengbai Xu, Kunhua Wen, Yuncai Wang, Yuwen Qin
Summary: In this paper, a spectral splicing method (SSM) for distributed strain sensing based on optical frequency domain reflectometry (OFDR) is proposed and demonstrated, achieving km level measurement length, RE level measurement sensitivity, and 104 RE level measurement range. The SSM replaces the centralized data processing method with a segmented processing method based on cross-correlation demodulation, achieving precise splicing of the spectrum corresponding to each signal segment by spatial position correction, thus enabling strain demodulation. The segmentation effectively suppresses phase noise and expands the sweep range, while spatial position correction rectifies the position error and extends the strain range.
Article
Optics
Qinqin Zhuang, Yicheng Lin, Cuofu Lin, Zhangjun Yu, Yonggui Yuan, Jun Yang, Kunhua Wen, Pengbai Xu, Yuncai Wang, Yuwen Qin
Summary: Optical frequency domain polarimetry (OFDP) is an emerging method for rapidly measuring distributed polarization crosstalk with a wide dynamic range. This Letter presents a solution to the trade-off between measurement length and dynamic range using a self-referenced unbalanced Mach-Zehnder interferometer. Experimental results demonstrate the method's ability to evaluate long polarization-maintaining fiber in rapidly changing environments, with a long distance capability (9.8 km), ultrawide dynamic range (107.8 dB), short measurement time (2 sec), and improved signal-to-noise ratio against ambient noise.
Article
Optics
Jilong Li, Yue Wang, Songnian Fu, Xiangzhi Xie, Meng Xiang, Feifei Yin, Yitang Dai, Jun Yang, Yuwen Qin
Summary: This study demonstrates a low-latency microwave photonic real-time Fourier transformation (RTFT) processing technique based on bandwidth slicing and equivalent dispersion. It achieves wide bandwidth spectrum analysis, high frequency resolution, high acquisition frame rate, and total latency of less than 200 ns.
Article
Optics
Mingyang Huang, Zhangjun Yu, Peijiong Li, Jun Yang, Kunhua Wen, Pengbai Xu, Yuncai Wang, Yuwen Qin
Summary: This paper presents an optical vector analyzer (OVA) based on orthogonal polarization interrogation and polarization diversity detection, which is used to measure the loss, delay, or polarization-dependent features of optical devices. Bayesian optimization is proposed as an online polarization error suppression method to improve the measurement reliability and efficiency. The OVA with online error suppression will be widely used in the production of optical devices, not just in the laboratory.
Review
Chemistry, Analytical
Junzhe Yu, Pengbai Xu, Zhangjun Yu, Kunhua Wen, Jun Yang, Yuncai Wang, Yuwen Qin
Summary: This paper reviews the principles and applications of four optical seismic sensors in submarine seismology over submarine optical cables. The advantages, disadvantages, and current technical requirements are discussed. This review can serve as a reference for studying submarine cable-based seismic monitoring.
Review
Optics
Leiming Wu, Xixi Yuan, Yuxuan Tang, S. Wageh, Omar A. A. Al-Hartomy, Abdullah G. G. Al-Sehemi, Jun Yang, Yuanjiang Xiang, Han Zhang, Yuwen Qin
Summary: Sensing devices play a crucial role in various fields and their increasing demand has led to the development of sensing materials and methods. Tin+1CnTx MXenes have emerged as ideal candidates for sensing materials due to their exceptional properties. In this review, the application of Tin+1CnTx in different sensor categories is systematically summarized, and their potential in emerging intelligent and bionic devices is discussed. The future challenges and perspectives of MXene-based sensors are also presented, highlighting their potential in driving the development of new technologies.
Article
Engineering, Electrical & Electronic
Jun Yang, Chen Zou, Cuofu Lin, Yunlong Zhu, Yao Zhu, Fanyang Dang, Yonggui Yuan, Zhangjun Yu, Yuncai Wang, Yuwen Qin
Summary: The impact of noise on the point spread function in optical fiber frequency sweeping interferometry (OFFSI) systems is significant. This paper reviews the development of noise compensation methods and provides a reference for selecting appropriate compensation methods in different applications. Discussions are made on the noise impacts, including laser source phase noise, laser source intensity noise, and ambient noise. The most serious noise is the laser source phase noise, and comprehensive classification and analysis of compensation strategies are provided. Future trends and developments are also discussed.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Xiang Zhang, Jun Yang, Yanyu Qian, Zhuo Zhang, Xiaozhang Wang, Yaohui Xue, Yonggui Yuan, Yuncai Wang, Yuwen Qin
Summary: This paper proposes a distributed stress analysis method for fiber winding structures. Compared with the traditional single-layer method, the stress of each turn in the fiber stacking state is quantitatively calculated, including the inclination angle, endplate, and layer transition. BOTDA tested the internal stress at high spatial resolution, which is consistent with the distributed method. The results proved the attenuation of internal stress under fiber stacking state in different winding parameters. For the first time, quantitative analysis of the stress increase characteristics of layer transition has been realized. Lastly, the discussion of rewinding, tension dropout, and extrusion defects provides a non-destructive and rapid method for defect recognition and winding quality improvement.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Pengbai Xu, Yihao Peng, Kunhua Wen, Yuehui Sun, Xinyong Dong, Jun Yang, Yuwen Qin
Summary: This paper proposes a novel bending-loss-resistant distributed temperature and strain discriminative sensor that is based on a 98 mol% germania-doped few-mode fiber and a standard Brillouin optical time-domain analysis setup. In a proof-of-concept demonstration, distributed temperature and strain discriminative measurements were conducted under a bending radius of 0.6 cm, where the maximum temperature and strain deviation were 2.78 degrees C and 33.2 mu epsilon, respectively.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Qinqin Zhuang, Cuofu Lin, Zhangjun Yu, Kunhua Wen, Pengbai Xu, Jun Yang, Yuncai Wang, Yuwen Qin
Summary: A high-precision measurement of distributed polarization crosstalk (DPC) is necessary for developing devices with ultrahigh polarization extinction ratios. Optical frequency domain polarimetry (OFDP) is a novel method with a potential ultra-wide dynamic range for DPC measurement. This research solved the phase error problem induced by the laser frequency sweep nonlinearity to improve the measurement precision of weak polarization crosstalk and enhanced the dynamic range.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)