Confinement and Excitation of the Fundamental Mode in Single-mode Graded Index Fibers of low V Number: Estimation by a Simple Technique

2001 ◽  
Vol 22 (5) ◽  
Author(s):  
P. Patra ◽  
S. Gangopadhyay ◽  
S. N. Sarkar
Keyword(s):  
Fundamental Mode ◽  
Simple Technique ◽  
Single Mode ◽  
Graded Index

Evaluation of dimensionless vector and scalar propagation constants for single-mode graded index fibers by a simple technique

Optik ◽  
2005 ◽  
Vol 116 (11) ◽  
pp. 511-514 ◽  
Author(s):  
M.C. Kundu ◽  
S. Gangopadhyay ◽  
T. Basu ◽  
S.N. Sarkar
Keyword(s):  
Simple Technique ◽  
Single Mode ◽  
Graded Index

scholarly journals Conditions for walk-off soliton generation in a multimode fiber

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Mario Zitelli ◽  
Fabio Mangini ◽  
Mario Ferraro ◽  
Oleg Sidelnikov ◽  
Stefan Wabnitz
Keyword(s):  
Numerical Simulations ◽  
Fundamental Mode ◽  
Single Mode ◽  
Multimode Fiber ◽  
Graded Index ◽  
Coupling Conditions ◽  
Degenerate Modes ◽  
Soliton Generation

AbstractIt has been recently demonstrated that multimode solitons are unstable objects which evolve, in the range of hundreds of nonlinearity lengths, into stable single-mode solitons carried by the fundamental mode. We show experimentally and by numerical simulations that femtosecond multimode solitons composed by non-degenerate modes have unique properties: when propagating in graded-index fibers, their pulsewidth and energy do not depend on the input pulsewidth, but only on input coupling conditions and linear dispersive properties of the fiber, hence on their wavelength. Because of these properties, spatiotemporal solitons composed by non-degenerate modes with pulsewidths longer than a few hundreds of femtoseconds cannot be generated in graded-index fibers.

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.

Prediction of mode dispersion in graded-index single-mode fibres

1983 ◽  
Vol 19 (21) ◽  
pp. 880 ◽  
Author(s):  
P.Y.P. Chen
Keyword(s):  
Single Mode ◽  
Graded Index ◽  
Mode Dispersion

Fundamental mode microbending loss in graded-index and W fibres

1977 ◽  
Vol 9 (2) ◽  
pp. 167-175 ◽  
Author(s):  
K. Petermann
Keyword(s):  
Fundamental Mode ◽  
Graded Index
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