Results 1 to 10 of about 1,200 (164)

Advances in Multicore Fiber Interferometric Sensors [PDF]

Sensors, 2023
In this paper, a review of multicore fiber interferometric sensors is given. Due to the specificity of fiber structure, i.e., multiple cores integrated into only one fiber cladding, multicore fiber (MCF) interferometric sensors exhibit many desirable ...
Yucheng Yao, Zhiyong Zhao, Ming Tang
doaj   +4 more sources

Resource Allocation in Multicore Elastic Optical Networks: A Deep Reinforcement Learning Approach

Complexity, 2023
A deep reinforcement learning (DRL) approach is applied, for the first time, to solve the routing, modulation, spectrum, and core allocation (RMSCA) problem in dynamic multicore fiber elastic optical networks (MCF-EONs).
Juan Pinto-Ríos, Felipe Calderón, Ariel Leiva, Gabriel Hermosilla, Alejandra Beghelli, Danilo Bórquez-Paredes, Astrid Lozada, Nicolás Jara, Ricardo Olivares, Gabriel Saavedra   +9 more
doaj   +2 more sources

Fabrication of Large-Core Multicore Fiber Bragg Gratings Based on Femtosecond Laser Direct Writing Technology [PDF]

Nanomaterials
We demonstrate the fabrication of the fiber Bragg grating (FBG) in a self-developed Yb-doped seven-core fiber using two femtosecond laser direct writing methods: a grating array inscription method and a plane-by-plane inscription method.
Xinda Lu, Rong Zhao, Chenhui Gao, Xinyu Ye, Qiushi Qin, Hao Li, Zhixian Li, Meng Wang, Zilun Chen, Zefeng Wang   +9 more
doaj   +2 more sources

Optical fiber laser system for torsion measurement using a three-core fiber and a nanocrystal-based reflector [PDF]

Scientific Reports
We report a novel and highly sensitive torsion sensor that integrates a multicore fiber (MCF) within a Sagnac interferometer so that the same MCF segment serves as both the reflective element and the sensing head of a fiber-ring laser.
Angel I. Correa, Jose R. Vento Alvarez, Marko Galarza, Arturo Sanchez Gonzalez, Romain Dauliat, Raphael Jamier, Philippe Roy, Georges Humbert, Rosa A. Perez-Herrera, Manuel Lopez-Amo   +9 more
doaj   +2 more sources

Compact omnidirectional multicore fiber-based vector bending sensor [PDF]

Scientific Reports, 2021
We propose and demonstrate a compact and simple vector bending sensor capable of distinguishing any direction and amplitude with high accuracy. The sensor consists of a short segment of asymmetric multicore fiber (MCF) fusion spliced to a standard single
Josu Amorebieta, Angel Ortega-Gomez, Gaizka Durana, Rubén Fernández, Enrique Antonio-Lopez, Axel Schülzgen, Joseba Zubia, Rodrigo Amezcua-Correa, Joel Villatoro   +8 more
doaj   +2 more sources

Coexistence of quantum key distribution and optical communication with amplifiers over multicore fiber. [PDF]

Nanophotonics, 2023
Abstract In this paper, the influence of classical signals on quantum key distribution (QKD) is studied over multi‐core fiber (MCF) when optical amplifiers exist. Firstly, the long‐distance simultaneous transmission architectures of QKD and classical signals are proposed based on advanced asymmetric sending or not sending QKD (SNS‐QKD) and classical ...
Kong W, Sun Y, Gao Y, Ji Y.
europepmc   +2 more sources

Design and control of a continuum robot with switchable stiffness based on ball-and-socket joints [PDF]

Scientific Reports
Multi-segment continuum robots (MSCRs) with switchable stiffness offer significant potential for advancing minimally invasive surgeries. Compliance is advantageous during navigation to prevent rigid collisions, while rigidity is required to ensure ...
Wentuo Yang, Zefeng Liu, Yongfeng Cao, Shuang Wang, Le Xie   +4 more
doaj   +2 more sources

Parallel Farby–Perot Interferometers in an Etched Multicore Fiber for Vector Bending Measurements [PDF]

Micromachines
Vector bending sensors can be utilized to detect the bending curvature and direction, which is essential for various applications such as structural health monitoring, mechanical deformation measurement, and shape sensing.
Kang Wang, Wei Ji, Cong Xiong, Caoyuan Wang, Yu Qin, Yichun Shen, Limin Xiao   +6 more
doaj   +2 more sources

A novel multicore Er/Yb co-doped microstructured optical fiber amplifier with peanut-shaped air holes cladding. [PDF]

Nanophotonics
Abstract The multicore fiber amplifier, as a key component in spatial division multiplexing (SDM) communication systems, presents higher technical difficulty compared to traditional multi‐channel single core fiber amplifiers, which has sparked widespread attention.
Zhang Y, Zhao Y, Fang Z, Liu J, Xia C, Hou Z, Zhao X, Tan Z, Dong Y, Zhou G, Yuan J.   +10 more
europepmc   +2 more sources

Ultra-Bend-Resistant 4-Core Simplex Cable Used for Short-Reach Dense Spatial Division Multiplexing Optical Transmission [PDF]

Micromachines
We optimized and fabricated an ultra-bend-resistant 4-core simplex cable (SXC) employing 4-core multicore fiber (MCF) suitable for short-reach dense spatial division multiplexing (DSDM) optical transmission in the O-band.
Zelin Zhang, Yu Qin, Jie Zhu, Caoyuan Wang, Xinli Jiang, Yichun Shen, Limin Xiao   +6 more
doaj   +2 more sources