Design and characteristics of ellipse-assisted ring-core fiber for space division multiplexing

Song, Yujing; Zheng, Jingjing; Pei, Li; Huang, Jing; Wang, Jianshuai; Ning, Tigang; Li, Jing; Bai, Bing

doi:10.1016/j.yofte.2022.102984

Cited by 5 publications

(4 citation statements)

References 23 publications

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“…However, the DRF proposed in this paper maintains the conventional core-clad refractive index difference size while maintaining a low level of polarization separation. For special fiber structures with such modal properties, we have reported rectangle-assisted ring-core fiber (RRF) [15], ellipse-assisted ring-core fiber (ERF) [16], and square-assisted ring-core fiber (SRF) [30]. By introducing a low refractive index region into the core, they can effectively separate spatially degenerate modes while ensuring a low level of polarization separation, and the fiber structure has the size of the core-clad refractive index difference of conventional fibers, which has a good application prospect in SDM systems.…”

Section: Discussion Of the Relationship Between The Structural Symmet...mentioning

confidence: 99%

“…Ring-Core Fiber (RRF) [15] Ellipse-Assisted Ring-Core Fiber (ERF) [16] Square-Assisted Ring-Core Fiber (SRF) [30] Diamond-Assisted Ring-Core Fiber (DRF)…”

Section: Rectangle-assistedmentioning

confidence: 99%

“…Ring-Core Fiber (RRF) [15] Ellipse-Assisted Ring-Core Fiber (ERF) [16] Square-Assisted Ring-Core Fiber (SRF) [30] Diamond-Assisted Ring-Core Fiber (DRF) The relationship between the spatial mode degeneracy separation and the number of symmetry axes of the fiber cross-section given here does not apply only to the fiber structures mentioned in Table 2. On a broader scale, the above relationship is still valid.…”

Section: Rectangle-assistedmentioning

confidence: 99%

“…In a few-mode fiber-based SDM system, the number of multiplexing channels that the fiber can provide depends on the number of supported modes. Therefore, the design of special FMFs for SDM is mainly focused on increasing the number of transmission modes and maintaining a large mode interval [15][16][17][18][19]. However, there is a trade-off between the Photonics 2022, 9, 766 2 of 11 number of higher-order modes and the ∆n eff [20].…”

Section: Introductionmentioning

confidence: 99%

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Design and Characteristics of Diamond-Assisted Ring-Core Fiber for Space Division Multiplexing

et al. 2022

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In this paper, a novel diamond-assisted ring-core fiber (DRF) is proposed. With the introduction of a low-refractive-index diamond-shaped region located in the center of the core, the proposed fiber effectively eliminates spatial degeneracy of the LPmn mode groups and maintains a low level of birefringence. Under the fiber structure parameters proposed in this paper, the effective refractive index difference (Δneff) between the spatial modes supported by the fiber in the entire C-band is greater than 2.25 × 10−4, and the Δneff between adjacent modes falls within the scope of (2.11~9.41) × 10−4. The degree of degenerate separation between the two polarization modes of all modes is very low, which is 2~3 orders of magnitude lower than that of the spatial mode. By discussing the mode characteristics of DRF and several other center-assisted ring-core fibers, the method that can be used to manipulate the spatial mode degenerate separation with structural symmetry is obtained, which can be applied to provide guidance for similar fiber designs. The proposed fiber structure is a promising candidate in space division multiplexing systems.

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Section: Discussion Of the Relationship Between The Structural Symmet...mentioning

confidence: 99%

“…Ring-Core Fiber (RRF) [15] Ellipse-Assisted Ring-Core Fiber (ERF) [16] Square-Assisted Ring-Core Fiber (SRF) [30] Diamond-Assisted Ring-Core Fiber (DRF)…”

Section: Rectangle-assistedmentioning

confidence: 99%