Flattened fundamental mode in optical Fibers

2012 ◽  
Author(s):  
Constance Valentin ◽  
Yves Quiquempois ◽  
Géraud Bouwmans ◽  
Laurent Bigot ◽  
Marc Douay ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Fundamental Mode

scholarly journals Influence of attenuation on the generation of optical vortices in multihelicoidal optical fibers

2021 ◽  
Vol 2103 (1) ◽  
pp. 012149
Author(s):  
C N Alexeyev ◽  
S S Alieva ◽  
E V Barshak ◽  
B P Lapin ◽  
M A Yavorsky
Keyword(s):  
Optical Fibers ◽  
Fundamental Mode ◽  
Optical Vortex ◽  
Conversion Process ◽  
Exceptional Point ◽  
Optical Vortices ◽  
Attenuation Coefficients ◽  
Enhanced Sensitivity ◽  
Scalar Approximation ◽  
The Difference

Abstract In this paper we have studied influence of attenuation on conversion processes of the fundamental mode (FM) in multihelicoidal optical fibers (MHF) in the vicinity of the point of accidental spectrum degeneracy within the framework of the scalar approximation. To this end, we have obtained expressions for modes of the MHF, which consist of the FM and an optical vortex (OV), and shown that conversion of the FM into the OV takes place. The difference in the attenuation coefficients for the partial fields of MHF’s modes leads to deterioration in the conversion process even with an ideal system’s tuning. At sufficiently large values of attenuation coefficients the conversion of the incoming FM into the vortex vanishes. Also we have shown the presence of exceptional point (EP) in the spectra of modes of the MHF and demonstrated enhanced sensitivity of the fiber in the vicinity of the EP to perturbations.

On the measurement of fundamental mode bend loss in large-mode-area optical fibers

2017 ◽  
Vol 56 (4) ◽  
pp. 928 ◽  
Author(s):  
Changgeng Ye ◽  
Joona Koponen ◽  
Ville Aallos ◽  
Teemu Kokki ◽  
Ossi Kimmelma
Keyword(s):  
Optical Fibers ◽  
Fundamental Mode ◽  
Large Mode Area ◽  
Mode Area

Polarization characteristics of the fundamental mode of optical fibers

1988 ◽  
Vol 6 (8) ◽  
pp. 1300-1305 ◽  
Author(s):  
X.-H. Zheng ◽  
W.M. Henry ◽  
A.W. Snyder
Keyword(s):  
Optical Fibers ◽  
Fundamental Mode ◽  
Polarization Characteristics

Rayleigh backscattering from the fundamental mode in step-index multimode optical fibers

2017 ◽  
Vol 56 (2) ◽  
pp. 354 ◽  
Author(s):  
M. A. Bisyarin ◽  
O. I. Kotov ◽  
A. H. Hartog ◽  
L. B. Liokumovich ◽  
N. A. Ushakov
Keyword(s):  
Optical Fibers ◽  
Fundamental Mode ◽  
Rayleigh Backscattering ◽  
Step Index

Rayleigh backscattering from the fundamental mode in multimode optical fibers

2016 ◽  
Vol 55 (19) ◽  
pp. 5041 ◽  
Author(s):  
M. A. Bisyarin ◽  
O. I. Kotov ◽  
A. H. Hartog ◽  
L. B. Liokumovich ◽  
N. A. Ushakov
Keyword(s):  
Optical Fibers ◽  
Fundamental Mode ◽  
Rayleigh Backscattering

scholarly journals Chirality of Light in Hybrid Modes of Vacuum-clad Ultrathin Optical Fibers

2017 ◽  
Vol 27 (1) ◽  
pp. 23 ◽  
Author(s):  
Fam Le Kien ◽  
Th. Busch ◽  
Viet Giang Truong ◽  
Sıle Nic Chormaic
Keyword(s):  
Optical Fibers ◽  
Fundamental Mode ◽  
Higher Order ◽  
He11 Mode ◽  
Optical Chirality ◽  
Unit Energy

We investigate chirality of light in the quasicircularly polarized fundamental HE11 mode and thequasicircularly polarized higher-order hybrid modes of vacuum-clad ultrathin optical fibers. Weshow that, for a given fiber with the parameters in the range of experimental interest, the higherorder modes have smaller optical chirality per unit energy than the fundamental mode. The sign ofthe chirality per unit energy of a HE or EH mode is the same as or opposite to, respectively, thesign of the phase circulation direction. Outside the fiber, the fields in the quasicircularly polarizedHE11 mode and the quasicircularly polarized higher-order HE21 and HE31 modes are superchiral.

scholarly journals Long wavelength behavior of the fundamental mode in microstructured optical fibers

2005 ◽  
Vol 13 (6) ◽  
pp. 1978 ◽  
Author(s):  
S. Wilcox ◽  
L. C. Botten ◽  
C. Martijn de Sterke ◽  
B. T. Kuhlmey ◽  
R. C. McPhedran ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Fundamental Mode ◽  
Long Wavelength ◽  
Microstructured Optical Fibers
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