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Multi-direction bending sensing based on spot pattern demodulation of dual-hole fiber

Chinese Optics Letters 2023年第12期21卷 92-96页

作者：李波瑶梁瑶瑶谢仲业左小杰孙敬华 School of Electronic Engineering and Intelligentization Dongguan University of TechnologyDongguan 523808China Centre de Nanosciences et de Nanotechnologies CNRSUniversitéParis-SaclayC2N91120 PalaiseauFrance

A multi-direction bending sensor based on spot pattern demodulation of a dual-hole fiber(DHF)is *** using the interference and scattering in a DHF,the related multidirectional variations can be captured by the optical ***,the multi-directional bending characteristics of the fiber are quantitatively described by the pattern of the output light spot,achieving multidirectional bending *** addition,considering the subtle changes in the deformation patterns over time,a convolutional neural network(CNN)model based on deep learning is introduced for accurate recognition and prediction of the bending *** experimental results show that the sensor can perceive different bending angles in four *** outstanding results indicate that the multi-directional bending sensor based on dual-hole interference pattern decoding has potential applications in multi-directional quantitative sensing and artificial intelligence perception.

关键词： microstructured optical fiber fiber device bending sensor

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Injectable fiber Electronics for Tumor Treatment

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Advanced fiber Materials 2022年第2期4卷 246-255页

作者： Yang Zhao Chuanrui Chen Yangyang Qiu Tenglong Mei Lei Ye Huan Feng Ye Zhang Liyuan Wang Yue Guo Xuemei Sun Jiaxue Wu Huisheng Peng State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science and Laboratory of Advanced MaterialsFudan UniversityShanghai 200438China The State Key Laboratory of Genetic Engineering School of Life ScienceZhongshan HospitalFudan UniversityShanghai 200438China National Laboratory of Solid State Microstructures Jiangsu Key Laboratory of Artifcial Functional Materialsand College of Engineering and Applied SciencesNanjing UniversityNanjing 210023China

Electrochemical therapy emerged as a low-cost and efective method for tumor ***,it has challenges such as the production of toxic byproducts and the use of rigid electrodes that damage soft ***,we report a new injectable and tissue-compatible fber therapeutic electronics for safe and efcient tumor *** design of aligned carbon nanotube(CNT)fber as electrodes endowed the device with high softness and enabled mini-invasive implantation through *** a mild voltage(1.2 V),the fber device released hydroxyl ions to alter the local chemical environment of the tissues without additional toxic products/gases,leading to immediate death of tumor *** fexible fber device could form stable interface with tissues and showed good biocompatibility after implantation for 30 *** in vitro experimental results showed the fber device could efciently kill 90.9%of QGY-7703 cancer cells after a single treatment in a few *** tumor-bearing animal models proved that the fber therapeutic device could efectively inhibit the growth of tumor tissues,indicating it is a safe,efective,controllable and low-cost method for tumor therapy.

关键词： Flexible Biocompatible Implantable fiber device Tumor therapy

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All-fiber ultrafast laser generating gigahertz-rate pulses based on a hybrid plasmonic microfiber resonator

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Advanced Photonics 2020年第2期2卷 48-56页

作者： Zi-xuan Ding Zi-nan Huang Ye Chen Cheng-bo Mou Yan-qing Lu Fei Xu Nanjing University College of Engineering and Applied SciencesNanjingChina Shanghai University Key Laboratory of Specialty Fiber Optics and Optical Access Networks ShanghaiShanghaiChina

Ultrafast lasers generating high-repetition-rate ultrashort pulses through various mode-locking methods can benefit many important applications,including communications,materials processing,astronomical observation,*** decades,mode-locking based on dissipative four-wave-mixing(DFWM)has been fundamental in producing pulses with repetition rates on the order of gigahertz(GHz),where multiwavelength comb filters and long nonlinear components are ***,this method has been improved using filter-driven DFWM,which exploits both the filtering and nonlinear features of silica microring ***,the fabrication complexity and coupling loss between waveguides and fibers are *** demonstrate a tens-to hundreds-of gigahertz-stable pulsed all-fiber laser based on a hybrid plasmonic microfiber knot resonator *** previously reported pulse generation mechanisms,the operation utilizes the nonlinear-polarization-rotation(NPR)effect introduced by the polarization-dependent feature of the device to increase intracavity power for boosting DFWM mode-locking,which we term NPRstimulated *** easily fabricated versatile device acts as a polarizer,comb filter,and nonlinear component simultaneously,thereby introducing an application of microfiber resonator devices in ultrafast and nonlinear *** believe that our work underpins a significant improvement in achieving practical low-cost ultrafast light sources.

关键词： fiber device fiber laser microfiber mode-locked laser GHz-rate pulse generation

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