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Versatile control of geometric birefringence in elliptical hollow optical fiber

机译:椭圆形空心光纤中几何双折射的多功能控制

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摘要

A novel optical fiber fabrication technique was developed by converting the symmetry of the silica substrate into the germanosilicate ring core to efficiently introduce geometric birefringence in an elliptical hollow optical fiber. Due to high ellipticity in the hollow ring core, the fiber provides an extremely high group birefringence of 2.35 X 10~(-3) at 1550 nm. Single-mode single-polarization guidance was also experimentally confirmed, with a bandwidth of approx35 nm. The generic adiabatic mode conversion capability in the taper also provided a stable fusion splice to conventional single-mode fiber with low loss and high tensile strength.
机译:通过将二氧化硅衬底的对称性转换为锗硅酸盐环芯,从而在椭圆形中空光纤中有效地引入几何双折射,开发了一种新颖的光纤制造技术。由于空心环芯的椭圆率高,该光纤在1550 nm处具有2.35 X 10〜(-3)的极高基团双折射。还通过实验证实了单模单偏振导板,其带宽约为35 nm。锥形中的常规绝热模式转换能力还为传统的单模光纤提供了稳定的熔接,具有低损耗和高拉伸强度。

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