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.

scholarly journals New Silica Laser-Optimized Multimode Optical Fibers with Extremely Enlarged 100-μm Core Diameter for Gigabit Onboard and Industrial Networks

Fibers ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 18 ◽  
Author(s):  
Vladimir A. Burdin ◽  
Michael V. Dashkov ◽  
Vladimir V. Demidov ◽  
Konstantin V. Dukelskii ◽  
Alexander S. Evtushenko ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Refractive Index Profile ◽  
Differential Mode ◽  
Index Profile ◽  
Core Diameter ◽  
Graded Index ◽  
Industrial Networks ◽  
Transmission Parameters ◽  
New Type ◽  
Cable Systems

We present new type of silica graded index laser-optimized multimode optical fibers (LOMF) with extremely enlarged core diameter up to 100 μm and “typical” “telecommunication” cladding diameter 125 μm. This optical fiber was designed for harsh environment Gigabit onboard cable systems and industrial networks. It differs by special optimized graded refractive index profile, providing low differential mode delay (DMD) for selected guided modes. We present some results of tests, performed for manufactured pilot 520 m length of described LOMF 100/125, concerned with its geometry properties as well as key transmission parameters—attenuation and DMD map.

scholarly journals Fast and Simple Method for Evaluation of Polarization Correction to Propagation Constant of Arbitrary Order Guided Modes in Optical Fibers with Arbitrary Refractive Index Profile

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Anton Bourdine
Keyword(s):  
Refractive Index ◽  
Optical Fibers ◽  
Arbitrary Order ◽  
Propagation Constant ◽  
Refractive Index Profile ◽  
Computational Error ◽  
Index Profile ◽  
Simple Method ◽  
Polarization Correction ◽  
Guided Modes

This work presents fast and simple method for evaluation of polarization correction to scalar propagation constant of arbitrary order guided modes propagating over weakly guiding optical fibers. Proposed solution is based on earlier on developed modified Gaussian approximation extended for analysis of weakly guiding optical fibers with arbitrary refractive index profile in the core region bounded by single solid outer cladding. Some results are presented that illustrate the decreasing of computational error during the estimation of propagation constant when polarization corrections are taken into account. Analytical expressions for the first and second derivatives of polarization correction are derived and presented.

scholarly journals Researches of Parameters of Chiral Few-Mode Optical Fiber Pilot Sample with Improved Height of Step Refractive Index Profile

2021 ◽  
Vol 7 (1) ◽  
pp. 6-19
Author(s):  
A. Bourdine ◽  
A. Barashkin ◽  
V. Burdin ◽  
M. Dashkov ◽  
V. Demidov ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Optical Fibers ◽  
Near Field ◽  
Refractive Index Profile ◽  
Index Profile ◽  
Technological Parameters ◽  
Dispersion Parameters ◽  
Core Diameter ◽  
Pilot Sample

This work presents results of researhes of fabricated pilot sample of chiral few-mode optical fiber (FMF) with induced twisting of 10 and 66 revolutions per meter, core diameter 11 µm (that almost corresponds to standard singlemode optical fibers), typical “telecommuniction” cladding diameter 125 µm and improved height of step refractive index profile. Proposed few-mode optical fiber supports 4 guided modes over “C”-band. We considered design and selection of desired technological parameters, based on results of computations, performed by both rigorous and approximation methods. Spectral curves of dispersion parameters are reprented as well as results of experimental measurements near-field laser beam profile and spectral and pulse responces of laser-excited optical signals.

A Simple Method for Prediction of Effective Core Area and Index of Refraction of Single-mode Graded Index Fiber in the Low V Region

2014 ◽  
Vol 35 (4) ◽  
Author(s):  
Angshuman Majumdar ◽  
Satabdi Das ◽  
Sankar Gangopadhyay
Keyword(s):  
Refractive Index ◽  
Single Mode ◽  
Index Of Refraction ◽  
Core Area ◽  
Exact Results ◽  
Simple Method ◽  
Graded Index ◽  
Core Areas ◽  
V Region ◽  
User Friendly

AbstractBased on the simple power series formulation of fundamental mode developed by Chebyshev formalism in the low V region, we prescribe analytical expression for effective core area of graded index fiber. Taking step and parabolic index fibers as examples, we estimate the effective core areas as well as effective refractive index for different normalized frequencies (V number) having low values. We also show that our estimations match excellently with the available exact results. The concerned predictions by our method require little computation. Thus, this simple but accurate formalism will be user friendly for the system engineers.

Nondestructive refractive‐index profile measurements of clad optical fibers

1975 ◽  
Vol 26 (10) ◽  
pp. 574-575 ◽  
Author(s):  
M. E. Marhic ◽  
P. S. Ho ◽  
M. Epstein
Keyword(s):  
Refractive Index ◽  
Optical Fibers ◽  
Refractive Index Profile ◽  
Index Profile
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