Multicore fiber technologies toward practical use

2020 ◽  
Author(s):  
Ryuichi Sugizaki ◽  
Masanori Takahashi ◽  
Koichi Maeda ◽  
Shigehiro Takasaka ◽  
Masayoshi Tsukamoto
Keyword(s):  
Multicore Fiber

Comparative crosstalk performance analysis of different configurations of heterogeneous multicore fiber

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Umar Farooque ◽  
Rakesh Ranjan
Keyword(s):  
Refractive Index ◽  
Mode Coupling ◽  
The Other ◽  
Heterogeneous Multicore ◽  
Coupled Mode ◽  
The Core ◽  
Bending Radius ◽  
Multicore Fiber ◽  
The Impact ◽  
Core Pitch

AbstractIn order to select the heterogeneous multicore fiber (MCF) configuration with ultra-low crosstalk and low peak bending radius, comparative crosstalk analysis have been done for the three possible core configurations, namely, Configuration 1 - different refractive index (R.I.) and different radius, Configuration 2 - different R.I., and Configuration 3 - different radius. Using the coupled mode equation and the simplified expressions of mode coupling coefficient (MCC) for different configurations of heterogeneous cores, the crosstalk performance of all the heterogeneous MCF configurations along with the homogeneous MCF have been investigated analytically with respect to core pitch (D) and fiber bending radius (${R}_{b}$). Further, these expressions of MCC have been extended to obtain the simplified expressions of MCC for the estimation of crosstalk levels in respective trench-assisted (TA) heterogeneous MCF configurations. It is observed from the analysis that in Configuration 1, crosstalk level is lowest and the rate of decrease in the crosstalk with respect to the core pitch is highest compared to the other configurations of heterogeneous MCF. The values of crosstalk obtained analytically have been validated by comparing it with the values obtained from finite element method (FEM) based numerical simulation results. Further, we have investigated the impact of a fixed percent change (5%) in the core parameters (radius and/or R.I.) of one of the core of a homogeneous MCF, to realize the different heterogeneous MCF configurations, on the variations in crosstalk levels, difference in the mode effective refractive index of the core 1 and core 2 ($\Delta {n}_{eff}={n}_{eff1}-{n}_{eff2}$), and the peak bending radius (${R}_{pk}$). For the same percent variations (5%) in the core parameters (radius and/or R.I.) of different configurations of cores (Config. 1-Config. 3), Config. 1 MCF has highest variation in $\Delta {n}_{eff}$ value compared to other configurations of MCF. Further, this highest variation in $\Delta {n}_{eff}$ value of Config. 1 MCF results in smallest peak bending radius. The smaller value of peak bending radius allows MCF to bend into smaller radius. Therefore, Configuration 1 is the potential choice for the design of MCF with smaller peak bending radius and ultra-low crosstalk level compared to the other configurations of SI-heterogeneous MCF.

scholarly journals Compact omnidirectional multicore fiber-based vector bending sensor

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Josu Amorebieta ◽  
Angel Ortega-Gomez ◽  
Gaizka Durana ◽  
Rubén Fernández ◽  
Enrique Antonio-Lopez ◽  
...  
Keyword(s):  
Single Mode ◽  
High Accuracy ◽  
Single Mode Fiber ◽  
Wavelength Shift ◽  
Short Segment ◽  
Light Power ◽  
Highly Sensitive ◽  
Bending Sensor ◽  
Asymmetric Multicore ◽  
Multicore Fiber

AbstractWe 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 mode fiber. The reflection spectrum of such a structure shifts and shrinks in specific manners depending on the direction in which the MCF is bent. By monitoring simultaneously wavelength shift and light power variations, the amplitude and bend direction of the MCF can be unmistakably measured in any orientation, from 0° to 360°. The bending sensor proposed here is highly sensitive even for small bending angles (below 1°).

scholarly journals Path-encoded high-dimensional quantum communication over a 2-km multicore fiber

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Beatrice Da Lio ◽  
Daniele Cozzolino ◽  
Nicola Biagi ◽  
Yunhong Ding ◽  
Karsten Rottwitt ◽  
...  
Keyword(s):  
Quantum Key Distribution ◽  
Quantum Communication ◽  
Error Rates ◽  
Quantum States ◽  
High Dimensional ◽  
Secret Key ◽  
System A ◽  
Reliable Transmission ◽  
Multicore Fiber ◽  
Interferometric Detection

AbstractQuantum key distribution (QKD) protocols based on high-dimensional quantum states have shown the route to increase the key rate generation while benefiting of enhanced error tolerance, thus overcoming the limitations of two-dimensional QKD protocols. Nonetheless, the reliable transmission through fiber links of high-dimensional quantum states remains an open challenge that must be addressed to boost their application. Here, we demonstrate the reliable transmission over a 2-km-long multicore fiber of path-encoded high-dimensional quantum states. Leveraging on a phase-locked loop system, a stable interferometric detection is guaranteed, allowing for low error rates and the generation of 6.3 Mbit/s of a secret key rate.

MoS2 Functionalized Multicore Fiber Probes for Selective Detection of Shigella Bacteria based on Localized Plasmon

2020 ◽  
pp. 1-1
Author(s):  
Santosh Kumar ◽  
Zhu Guo ◽  
Ragini Singh ◽  
Qinglin Wang ◽  
Bingyuan Zhang ◽  
...  
Keyword(s):  
Selective Detection ◽  
Localized Plasmon ◽  
Fiber Probes ◽  
Multicore Fiber

Design and refinement of rare earth doped multicore fiber lasers

2013 ◽  
Vol 35 (11) ◽  
pp. 1941-1946 ◽  
Author(s):  
F. Prudenzano ◽  
L. Mescia ◽  
A. Di Tommaso ◽  
M. Surico ◽  
M. De Sario
Keyword(s):  
Rare Earth ◽  
Fiber Lasers ◽  
Multicore Fiber ◽  
Rare Earth Doped

scholarly journals Cladding-pumped erbium-doped multicore fiber amplifier

2012 ◽  
Vol 20 (18) ◽  
pp. 20191 ◽  
Author(s):  
K. S. Abedin ◽  
T. F. Taunay ◽  
M. Fishteyn ◽  
D. J. DiGiovanni ◽  
V.R. Supradeepa ◽  
...  
Keyword(s):  
Fiber Amplifier ◽  
Erbium Doped ◽  
Multicore Fiber

scholarly journals Theoretical Investigation of Six-Mode Multi/Demultiplexer Based on Fused-Type Multicore Fiber Coupler

2016 ◽  
Vol 8 (3) ◽  
pp. 1-8 ◽  
Author(s):  
Shoko Nishimoto ◽  
Takeshi Fujisawa ◽  
Yusuke Sasaki ◽  
Hitoshi Uemura ◽  
Kunimasa Saitoh
Keyword(s):  
Theoretical Investigation ◽  
Fiber Coupler ◽  
Multicore Fiber

System Transmission Over Multicore Fiber for Datacom Optical Interconnect Applications

2021 ◽  
Author(s):  
Yi Sun ◽  
Robert Lingle ◽  
Bob Holland ◽  
Roman Shubochkin ◽  
Kumar Bansal ◽  
...  
Keyword(s):  
Optical Interconnect ◽  
Multicore Fiber
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