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arXiv · 1910.01906

Birefringent anti-resonant hollow-core fiber

S. Yerolatsitis·R. Shurvinton·P. Song·Y. Zhang·J. A. Francis-Jones·K. R. Rusimova
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Abstract

Hollow-core fibers have demonstrated record performance in applications such as high-power pulse delivery, quantum computing, and sensing. However, their routine use is yet to become reality. A major obstacle is the ability to maintain the polarization state of light over a broad range of wavelengths, while also ensuring low attenuation and single-mode guidance. Here we simulated, fabricated and characterized a single-mode polarization-maintaining anti-resonant hollow-core fiber. The birefringence was achieved by introducing resonators of different thicknesses, thereby creating reduced symmetry in the structure. The measured group birefringence of 4.4x10-5 at 1550 nm is in good agreement with the calculated group birefringence from the simulations. This corresponds to a phase birefringence of 2.5x10-5 at 1550 nm. The measured loss of the fiber was 0.46 dB/m at 1550 nm. With its simple structure, low loss, and broadband operation this polarization-maintaining anti-resonant hollow-core fiber is a serious contender for applications in gas-based nonlinear optics and communications.

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S. Yerolatsitis, R. Shurvinton, P. Song, Y. Zhang, J. A. Francis-Jones, K. R. Rusimova. 2019-09-24. Birefringent anti-resonant hollow-core fiber. https://doi.org/10.1109/jlt.2020.3000706

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