Design of single-mode single-circularly polarized chiral anti-resonant fiber for the communication band

Abstract

We propose a design of anti-resonant fiber by introducing the chiral material into the inner regions of the six germanium-doped silica glass cladding tubes, which can support the operation of single-mode single left-handed circular polarization in the communication band from 1.540 to 1.605 μm. Especially, the loss reaches a minimum value of 0.009 dB/m at 1.550 μm. The sign of chiral parameter can control the handedness of polarization in the operation of single-mode single-circular polarization. In addition, the anti-resonant fiber possesses a good bending resistance performance. The minimum bending radius of the anti-resonant fiber is 10 cm to maintain the single-mode single left-handed circular polarization for 1.550 μm. We believe the novel anti-resonant fiber can find applications in optical communication, polarization imagining and chiral sensing.