Research on inter-core crosstalk characteristics of real multi-core fibers with multi-core excitation
Based on the coupled power theory, the characteristics of optical power and inter-core crosstalk (ICXT) were studied in real multi-core fibers (MCF) with multi-core excitation.According to the simplified coupled power equation of 7-core fiber, the analytical expressions of optical signal power and I...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Journal on Communications
2022-11-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2022211/ |
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| Summary: | Based on the coupled power theory, the characteristics of optical power and inter-core crosstalk (ICXT) were studied in real multi-core fibers (MCF) with multi-core excitation.According to the simplified coupled power equation of 7-core fiber, the analytical expressions of optical signal power and ICXT in each fiber core were deduced under three multi-core excitation conditions.Simulation results show that, after long-distance transmission, the optical power of each core would converge to a fixed value and reach a dynamic equilibrium state, and its convergence distance decreased exponentially with the increase of bending radius and gradually tended to a fixed value.In addition, in order to study the relationship between multi-core excitation and single-core excitation, the analytical expressions of the power and ICXT in coupled cores were deduced under simultaneous excitation and separate excitation of multi-core.Research shows that the contribution of multi-core excitations to the ICXT of coupled core is irrelevant, and the ICXT of multi-core excitation is equivalent to the sum of the ICXT obtained by the excitation of the cores separately. |
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| ISSN: | 1000-436X |