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A polarization-maintaining large-mode-area single-mode solid-core anti-resonant fiber is proposed for the first time in this work based on a double-layer structure. Specifically, the designed fiber obtains a mode field area up to 2135 μm2 at 1.064 μm while exhibiting a birefringence of 1.3×10-5. Single-mode operation can be guaranteed with the confinement losses of all higher order modes exceeding 10 dB/m.
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