Open AccessEnhanced birefringence in conventional and hybrid anti-resonant hollow-core fibers
Author(s) -
Md. Selim Habib,
Abubakar I. Adamu,
Christos Markos,
Rodrigo AmezcuaCorrea
Publication year - 2021
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.422537
Subject(s) - materials science , birefringence , optics , extinction ratio , polarization (electrochemistry) , cladding (metalworking) , polarization maintaining optical fiber , polarization mode dispersion , silicon , insertion loss , optical fiber , optoelectronics , fiber optic sensor , physics , composite material , wavelength , chemistry
A hollow-core anti-resonant fiber (HC-ARF) design based on hybrid silica/silicon cladding is proposed for single-polarization, single-mode and high birefringence. We show that by adding silicon layers in a semi-nested HC-ARF, one of the polarization states can be strongly suppressed while simultaneously maintaining low propagation loss for other polarization states, single-mode and high birefiringence. The optimized HC-ARF design exhibits propagation loss, high birefringence, and polarization-extinction ratio of 0.05 dB/m, 0.5 × 10 -4 , >300 respectively for y-polarization while the loss of x-polarization is >5 dB/m at 1064 nm. The fiber also has low bend-loss and thus can be coiled to a small bend radii of 5 cm having ≈0.06 dB/m bend loss.