Design and analysis of trench-assisted large-mode-field-area multi-core fiber with air-hole

Zhang, Yuqin; Lian, Yudong; Wang, Yuhe; Wang, Jingbo; Yang, Mengxin; Luan, Nannan

doi:10.1007/s00340-020-07557-7

Cited by 3 publications

(1 citation statement)

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“…However, because of its multiple air holes, the production process of PCF is complex and the fiber is easy to collapse. MCoF can be used for space-division multiplexing [19][20][21], and its transmission capacity is several times that of single-core optical fiber [22], but it causes varying degrees of inter-core crosstalk [23]. As for SCF, it has a large MFA and high-quality output beam [14], but it also requires a complex manufacturing process, and the process is difficult to control.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of a Large Mode Field Area and Low Bending Loss Multi-Cladding Fiber with Comb-Index Core and Gradient-Refractive Index Ring

Zhang

Lian

2023

Sensors

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The large mode field area fiber can raise the tolerance of power, and high requirements for the bending characteristics of optical fibers are needed. In this paper, a fiber composed of a comb-index core, gradient-refractive index ring, and multi-cladding is proposed. The performance of the proposed fiber is investigated by using a finite element method at a 1550 nm wavelength. When the bending radius is 20 cm, the mode field area of the fundamental mode can achieve 2010 μm2, and the bending loss is reduced to 8.452 × 10−4 dB/m. Additionally, when the bending radius is smaller than 30 cm, there are two variations with low BL and leakage; one is a bending radius of 17 cm to 21 cm, and the other is from 24 cm to 28 cm (except for 27 cm). When the bending radius is between 17 cm and 38 cm, the highest bending loss is 1.131 × 10−1 dB/m and the lowest mode field area is 1925 μm2. It has a very important application prospect in the field of high-power fiber lasers and telecom applications.

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