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.
Bibliographical noteFunding Information:
Villum Fonden (36063); Det Frie Forskningsr?d (8022-00091B); Air Force Research Laboratory (FA86511820019); Air Force Office of Scientific Research (FA9550-15-10041); Army Research Office (W911NF-12-1-0450, W911NF-17-1-0501, W911NF1910426).
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