Simultaneous measurement of displacement and torsion in a fiber specklegram sensor [0.03%]
光纤斑纹传感器中位移和扭动的同步测量
Long He,Xiangqian Chen,Junjie Cheng et al.
Long He et al.
The fiber specklegram sensor (FSS) shows potential for mechanical parameter measurement, yet simultaneous displacement and torsion sensing remains unexplored. Here, a coupled-mode-theory-based model elucidating torsion-induced specklegram e...
Customized spatiotemporal twisted partially coherent array wave packets in strongly nonlocal nonlinear media [0.03%]
强非局部非线性介质中时空涡旋部分相干阵列波包的调控
Shaohua Zhang,Jun Qu
Shaohua Zhang
In the strongly nonlocal regime, controllable propagation of arbitrary partially coherent spatiotemporal wave packets is achieved by constructing general solutions of the (3 + 1)-dimensional nonlinear Schrödinger equation and tailoring the...
Broadband low-dispersion waveguide-integrated spoof surface plasmon polariton delay lines [0.03%]
宽带色散透镜的波导集成伪装表面等离极化激元延迟线
Hai Ke Tang,Le Peng Zhang,Hao Chi Zhang et al.
Hai Ke Tang et al.
The inherent dispersion of spoof surface plasmon polariton (SSPP) transmission lines-where group velocity decreases monotonically with frequency-constrains their deployment in applications demanding constant group delay. Here, we propose a ...
Single-mode nonlinear amplification of femtosecond pulses in a multimode-fiber regenerative amplifier [0.03%]
少模非线性放大再生放大器中的飞秒脉冲
Wenchao Wang,Yi-Hao Chen,Nicholas Bender et al.
Wenchao Wang et al.
Nonlinear amplification in large-core fibers is a potentially attractive approach to high-power short-pulse generation, but transverse mode coupling and the consequent beam degradation are concerns. Robust single-mode operation of a multimo...
Partitioned constellation shaping based on index-driven coding for OFDM transmission over seven-core fiber [0.03%]
基于索引驱动编码的分区星座成型七芯光纤OFDM传输方法
Shengjie Chen,Bo Liu,Jianxin Ren et al.
Shengjie Chen et al.
This paper proposes a probabilistic shaping modulation scheme based on index-driven constellation partitioning. The 32QAM constellation is divided into eight non-overlapping energy-level patterns, with every three consecutive subcarriers gr...
High-sensitivity direct-detection DAS system using a UWFBG array based on linear frequency modulation [0.03%]
基于线性调频的超高灵敏度分布式直接检测系统
Qi Li,Yuanheng Zhao,Tianyu Mao et al.
Qi Li et al.
Microwave photonic (MWP) technology is widely used in signal generation and processing, which helps optical sensors achieve higher measurement resolution and sensitivity. In this Letter, MWP technology is used to improve the performance of ...
Zhilong Zhou,Han Lin,Baohua Jia
Zhilong Zhou
We demonstrate topology-orientation separability in structured-light-driven magnetization in a tight-focusing regime. A nonzero vortex-charge mismatch Δm produces an azimuthal phase beating that generates a twisted optical spin density thr...
Erbium-doped fiber polarizer via femtosecond laser inscription for ultrafast fiber lasers [0.03%]
基于飞秒激光直写的掺铒光纤偏振器用于超快光纤激光器
Zinan Huang,Andreas Ioannou,Zishuo Xu et al.
Zinan Huang et al.
We report an integrated gain polarizer through femtosecond-laser direct inscribed 45°-tilted fiber grating (45°-TFG) in erbium-doped fiber (EDF), serving as a unique mode-locking element to generate stable ultrafast pulses. Our monolithic...
Feedback intensity adjustable half-open-cavity random fiber laser based on erbium-doped fiber [0.03%]
一种基于掺铒光纤的可调反馈强度半开腔随机光纤激光器
Qiancheng Zhao,Yuncong Yang,Xianming Huang et al.
Qiancheng Zhao et al.
A half-open cavity random fiber laser with tunable feedback intensity by leveraging strong random feedback between erbium-doped fiber (EDF) gain and Rayleigh scattering-enhanced fiber (RSEF) has been constructed. The laser output characteri...
Localized guided-mode resonance-enabled highly angle-insensitive optical filtering [0.03%]
基于局域化导模共振的高角度 insensitive 光学滤波器
Iqra Mamoon,Qingquan Liu,Md Dulal Haque et al.
Iqra Mamoon et al.
Angle sensitivity to incident light remains a fundamental limitation in conventional Fabry-Pérot (F-P) and guided-mode resonance (GMR) filters due to the angular dependence of the transverse wave vector. In this work, we propose a compact ...