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ISSN: 1023-5086

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ISSN: 1023-5086

Scientific and technical

Opticheskii Zhurnal

A full-text English translation of the journal is published by Optica Publishing Group under the title “Journal of Optical Technology”

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DOI: 10.17586/1023-5086-2023-90-01-76-83

УДК: 535

Fusion splicing of hollow-core to standard single-mode fibers using a gradient-index bridge fiber

Zhang, Z., Li Renpu, Wang, C., Zhou, M., Liu Yu, Pang Yu

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Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Zhang Z., Li R., Wang C., Zhou M., Liu Y., Pang Y. Fusion splicing of hollow-core to standard single-mode fibers using a gradient-index bridge fiber (Соединение волокна с полой сердцевиной со стандартным одномодовым волокном методом плавления при использовании промежуточного волокна с градиентом показателя преломления) [на англ. яз.] // Оптический журнал. 2023. Т. 90. № 1. С. 76–83. http://doi.org/10.17586/1023-5086-2023-90-01-76-83

 

Zhang Z., Li R., Wang C., Zhou M., Liu Y., Pang Y. Fusion splicing of hollow-core to standard single-mode fibers using a gradient-index bridge fiber (Соединение волокна с полой сердцевиной со стандартным одномодовым волокном методом плавления при использовании проме-жуточного волокна с градиентом показателя преломления) [in English] // Opticheskii Zhurnal. 2023. V. 90. № 1. P. 76–83. http://doi.org/10.17586/1023-5086-2023-90-01-76-83

For citation (Journal of Optical Technology):

Zhe Zhang, Renpu Li, Chaoyong Wang, Min Zhou, Yu Liu, and Yu Pang, "Fusion splicing of hollow-core to standard single-mode fibers using a gradient-index bridge fiber," Journal of Optical Technology. 90(1), 42-45 (2023). https://doi.org/10.1364/JOT.90.000042

Abstract:

High-performance interconnection between hollow-core fiber and conventional solid-core fiber is of great significance for a lot of promising applications of hollow-core fibers. The current problems for high-performance hollow-core fiber/solid-core fiber interconnection mainly involve mode field mismatch of the two fibers and the complex splicing process. Subject of study. Fusion splicing of anti-resonant hollow core fiber with low loss (0.52 dB) and conventional single mode fiber using a convenient graded index bridge fiber. Purpose of the work. Eliminate the mode field diameter mismatch between anti-resonant hollow core fiber and single mode fiber, and simplify the mode field diameter adaptation method and process. Method. We employ a convenient graded index bridge fiber approach, where a gradient index fiber is firstly spliced with the single mode fiber, and the modes interference within the graded index bridge fiber causes periodic enlargement and shrinkage of the mode field diameter. By precious cutting of the graded index bridge fiber, the mode field diameter can be well controlled and made approximately equal to the mode field diameter of the anti-resonant hollow core fiber. After mode field diameter adaptation, an optimized arc discharge fusion splicing procedure is applied for the anti-resonant hollow core fiber/single mode fiber fusion splicing. Main result. A fusion splicing loss of about 0.52 dB is achieved, which involves near 0.42 dB mode field diameter-mismatch-induced loss and about 0.1 dB fusion splicing loss that caused by the deformation of the anti-resonant hollow core fiber. Practical significance. The developed approach is convenient and cost-effective, which can benefit a lot of applications of anti-resonant hollow core fibers in future telecommunications, fiber gas lasers as well as fiber-optic sensing.

 

Acknowledgement: this work is supported by the China Postdoctoral Science Foundation (2020M683184) and Guangdong Basic and Applied Basic Research Foundation (32221295).

Keywords:

anti-resonant hollow-core fiber, fusion splicing, gradient-index bridge fiber, mode field mismatch, low loss

OCIS codes: 060.2310, 060.4080, 230.0230, 060.0060, 220.0220

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