Phase Shift Induced Degradation of Polarization Caused by Bends in Inhibited-Coupling Guiding Hollow-Core Fibers

We report on a comprehensive analysis of the polarization-maintaining (PM) behavior of two different kinds of inhibited-coupling (IC) guiding hollow-core fibers and the influence of fiber bends. A phase shift induced degradation of the incident linear polarization state was observed due to a mismatc...

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Bibliographic Details
Published in:IEEE photonics technology letters 2019-08, Vol.31 (16), p.1362-1365
Main Authors: Rohrer, Christian, Osorio, Jonas H., Beirow, Frieder, Maurel, Martin, Debord, Benoit, Graf, Thomas, Gerome, Frederic, Benabid, Fetah, Abdou Ahmed, Marwan
Format: Article
Language:English
Subjects:
Bend radius
Bends
Computer simulation
Coupling
Degradation
Engineering Sciences
Fiber properties
hollow-core fibers
Integrated circuits
Laser beams
Lattices
Linear polarization
Numerical prediction
Numerical simulation
Optical fiber polarization
Optics
Phase shift
Photonic
photonic crystal fibers
Polarization
polarization-maintaining fibers
Surface emitting lasers
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Summary:We report on a comprehensive analysis of the polarization-maintaining (PM) behavior of two different kinds of inhibited-coupling (IC) guiding hollow-core fibers and the influence of fiber bends. A phase shift induced degradation of the incident linear polarization state was observed due to a mismatch of the propagation constants of the orthogonally polarized LP 01 -modes of the fiber. This effect was predicted theoretically and is corroborated with numerical simulations and experimental results. It is shown that the phase shift is enhanced by a reduction of the bending radius of the fiber but can be circumvented by orienting the polarization of the injected beam either parallel or perpendicular to the plane of bending.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2019.2927046