Computation of mode eigenfunctions in graded-index optical fibers by the propagating beam method

1980 ◽  
Vol 19 (13) ◽  
pp. 2240 ◽  
Author(s):  
M. D. Feit ◽  
J. A. Fleck
Keyword(s):  
Optical Fibers ◽  
Graded Index ◽  
Beam Method

scholarly journals Distributed Static and Dynamic Strain Measurements in Polymer Optical Fibers by Rayleigh Scattering

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5049
Author(s):  
Agnese Coscetta ◽  
Ester Catalano ◽  
Enis Cerri ◽  
Ricardo Oliveira ◽  
Lucia Bilro ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Time Domain ◽  
Rayleigh Scattering ◽  
Cost Effective ◽  
Time Domain Reflectometry ◽  
Dynamic Strain ◽  
Strain Measurements ◽  
Graded Index ◽  
Optical Time ◽  
Polymer Optical Fibers

We demonstrate the use of a graded-index perfluorinated optical fiber (GI-POF) for distributed static and dynamic strain measurements based on Rayleigh scattering. The system is based on an amplitude-based phase-sensitive Optical Time-Domain Reflectometry (ϕ-OTDR) configuration, operated at the unconventional wavelength of 850 nm. Static strain measurements have been carried out at a spatial resolution of 4 m and for a strain up to 3.5% by exploiting the increase of the backscatter Rayleigh coefficient consequent to the application of a tensile strain, while vibration/acoustic measurements have been demonstrated for a sampling frequency up to 833 Hz by exploiting the vibration-induced changes in the backscatter Rayleigh intensity time-domain traces arising from coherent interference within the pulse. The reported tests demonstrate that polymer optical fibers can be used for cost-effective multiparameter sensing.

Propagating Fields in Graded Index Optical Fibers

Fiber Optics ◽  
1979 ◽  
pp. 279-302
Author(s):  
M. D. Feit ◽  
J. A. Fleck
Keyword(s):  
Optical Fibers ◽  
Graded Index

Transmission characteristics of graded-index optical fibers with a lossy outer layer

1978 ◽  
Vol 17 (8) ◽  
pp. 1199 ◽  
Author(s):  
Norio Kashima ◽  
Naoya Uchida
Keyword(s):  
Optical Fibers ◽  
Outer Layer ◽  
Transmission Characteristics ◽  
Graded Index

New method for calculating the coupling coefficient in graded index optical fibers

2018 ◽  
Vol 101 ◽  
pp. 223-226 ◽  
Author(s):  
Svetislav Savović ◽  
Alexandar Djordjevich
Keyword(s):  
Optical Fibers ◽  
Coupling Coefficient ◽  
New Method ◽  
Graded Index

scholarly journals Design of Silica Multimode Optical Fibers with Extremely Enlarged Core Diameter for Laser-Based Multi-Gigabit Short-Range Optical Networks

Photonics ◽  
2018 ◽  
Vol 5 (4) ◽  
pp. 37 ◽  
Author(s):  
Anton V. Bourdine ◽  
Vladimir A. Burdin ◽  
Vijay Janyani ◽  
Ashish Kumar Ghunawat ◽  
Ghanshyam Singh ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Networks ◽  
Optical Fibers ◽  
Short Range ◽  
Fiber Optic ◽  
Index Profile ◽  
Core Diameter ◽  
Simple Method ◽  
Graded Index ◽  
Comparison Results

This work presents an alternative fast and simple method for the design of a refractive index profile of silica multimode optical fibers (MMFs) with extremely enlarged core diameters of up to 100 µm for laser-based multi-gigabit short-range optical networks. We demonstrate some results of 100 µm core MMF graded index profile optimization performed by a proposed solution, which provides a selected mode staff differential mode delay (DMD) reduction over the “O”-band under particular launching conditions. Earlier on, a developed alternative model for a piecewise regular multimode fiber optic link operating in a few-mode regime for the computation of laser-excited optical pulse dynamics during its propagation over an irregular silica graded-index MMF with an extremely large core diameter, is utilized to estimate the potentiality of fiber optic links with the described MMFs. Here, we also present the comparison results of the simulation of 10GBase-LX optical signal transmission over 100 µm core MMFs with conventional and optimized graded-index refractive index profiles.

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