Single-Polarization and Single-Mode Hybrid Hollow-Core Anti-Resonant Fiber Design at 2 μm

Single-Polarization and Single-Mode Hybrid Hollow-Core Anti-Resonant Fiber Design at 2 μm

In this paper, to the best of our knowledge, a new type of hollow-core anti-resonant fiber (HC-ARF) design using hybrid silica/high-index material (HIM) cladding is presented for single-polarization, high-birefringence, and endlessly single-mode operation at 2 μm wavelength. We show that...

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Bibliographic Details
Main Authors: Herschel Herring, Mohammad Al Mahfuz, Md. Selim Habib
Format: Article
Language:English
Published: IEEE 2024-01-01
Series:IEEE Photonics Journal
Subjects:
Hollow-core anti-resonant fiber
high-birefringence
single-polarization
single-mode fiber
Online Access:https://ieeexplore.ieee.org/document/10476642/
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Summary:In this paper, to the best of our knowledge, a new type of hollow-core anti-resonant fiber (HC-ARF) design using hybrid silica/high-index material (HIM) cladding is presented for single-polarization, high-birefringence, and endlessly single-mode operation at 2 &#x03BC;m wavelength. We show that the inclusion of a HIM layer in the cladding allows strong suppression of <inline-formula><tex-math notation="LaTeX">$x-$</tex-math></inline-formula>polarization, while maintaining low propagation loss and single-mode propagation for <inline-formula><tex-math notation="LaTeX">$y-$</tex-math></inline-formula>polarization. The optimized HC-ARF design includes a combination of low propagation loss, high-birefringence, and polarization-extinction ratio (PER) or loss ratio of 0.02 dB/m, 1.2 <inline-formula><tex-math notation="LaTeX">$\times \, 10^{-4}$</tex-math></inline-formula>, and &gt;550 respectively, while the loss of the <inline-formula><tex-math notation="LaTeX">$x-$</tex-math></inline-formula>polarization is &gt;20 dB/m. The proposed fiber may also be coiled to small bend radii while maintaining low bend-loss of <inline-formula><tex-math notation="LaTeX">$\approx$</tex-math></inline-formula>0.01&#x2013;0.1 dB/m, and can potentially be used as polarization filter based on the different gap separations and bend conditions.
ISSN:1943-0655

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