Low bending loss few-mode hollow-core anti-resonant fiber with glass-sheet conjoined nested tubes

liu, huabei; Wang, Yu; Zhou, Yan; Guan, Zuguang; Zhao, Yu; Ling, Qiang; Luo, Si; Shao, Jie; Huang, Dongmei; Chen, Daru

doi:10.1364/oe.446841

Cited by 8 publications

(4 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…2021年 , Goel与 Yoo [47] 报道了一种具有中心对称嵌套结构的少模HC-NCF, 可以支持五到九种不同模式同时传输, 其中基模 LP 01 的最小CL为1.4×10 -5 dB/m. 2022年, Ou等 [48] 提出了一种弱耦合跑道型嵌套少模HC-NCF, 实现了LP 01 和LP 11 两种模式的低损耗传输, 基模 LP 01 的最小CL为10 -5 dB/m. 同年, Liu等 [49] 提出了一种低弯曲损耗少模玻璃片连接嵌套管结构的 HC-NCF, 该光纤支持LP 01 , LP 11 , LP 21 , LP 02 , LP 31 域的最大网格尺寸分别设置为λ/6和λ/4 [15] .…”

Section: 而Hc-ncf特殊的导光机制可以有效抑制模式间unclassified

See 1 more Smart Citation

Low-loss weak-coupling 6-mode hollow-core negative curvature fiber based on symmetric double-ring nested tube

Hui,

Liu,

Gao

et al. 2024

Acta Phys. Sin.

View full text Add to dashboard Cite

Few-mode optical fibers have played an increasingly important role in breaking through the transmission capacity limitations of single-mode optical fiber and alleviating the bandwidth crisis in optic fiber communication systems in recent years. Nevertheless, traditional solid core few-mode optical fibers usually suffer from optical fiber nonlinearity and mode coupling, leading to mode crosstalk between channels. Hollow core negative curvature fibers (HC-NCF) have attracted widespread attention due to their advantages such as low latency, low nonlinearity, low dispersion, low transmission loss, and large operating bandwidth. In this work, a novel low-loss few-mode HC-NCF with symmetrically double ring nested tube structure is designed, which supports six core modes including LP01、LP11、LP21、LP02、LP31a、LP31b. The designed optical fiber is based on silica dioxide substrate and adopts a unique symmetrical double ring nested cladding structure, which can effectively suppress the coupling between the core mode and the cladding mode. The finite element method (FDE) was used to numerically analyze the properties of the proposed few-mode HC-NCF and optimize the structural parameters of the few-mode HC-NCF. Moreover, the confinement loss and bending loss of all core modes were investigated. The simulation results show that the proposed few-mode HC-NCF can support the independent transmission of six weakly coupled core modes (with the effective refractive index difference greater than 1×10-4 between the adjacent core modes, which greatly avoids the coupling between the adjacent modes in the fiber core). Within the 400 nm bandwidth (1.23-1.63 µm, covering the O, E, S, C, and L bands), all six modes in the fiber core maintain low loss transmission. Moreover, within the range of 1.3-1.63 µm, the CL of LP01, LP11 and LP21 modes is less than 1×10-3 dB/m, and the CL of LP02 and LP31b modes is less than 3×10-3 dB/m. The CL of each mode reached the lowest value at 1.4 µm, and the LP01 mode has the lowest CL of 4.3×10-7 dB/m. In addition, for a bending radius of 7 cm, each mode maintains the low bending loss characteristic over a certain operating wavelength range. Within the range of 1.23-1.61 µm, the BL of LP01 is less than 4.5×10-4 dB/m, and the BL of LP11 is less than 1.3×10-3 dB/m. The tolerance analysis shows that even with a structural parameters deviation of ±1%, the few-mode HC-NCF can still maintain the characteristic of low-loss and weak coupling. The designed few-mode HC-NCF has ultra-low CL and bending-insensitive characteristics, while supporting independent transmission of six modes, which will find huge application potential in the future high performance mode division multiplexing systems.

show abstract

Section: 而Hc-ncf特殊的导光机制可以有效抑制模式间unclassified

“…Ou J, et al (2022) [48] 1.55 2 7.4×10 -7 @1.06 µm 800 --Liu H, et al (2022) [49] 1.55 5 3.4×10 -7 @1. 38…”

Section: 嵌套管壁厚Tunclassified

Low-loss weak-coupling 6-mode hollow-core negative curvature fiber based on symmetric double-ring nested tube

Hui,

Liu,

Gao

et al. 2024

Acta Phys. Sin.

View full text Add to dashboard Cite

show abstract

“…In 2022, Zhao et al [12] designed a nested hollow-core fiber with a bending loss of 0.001 dB/m at a minimum bending radius of 50 mm and a wavelength of 1.55 μm. In the same year, Liu et al [13] designed an AR-HCF with a glass sheet nested structure and calculated that its bending loss of LP01-LP31 mode is less than 3.0×10 -4 dB/m in the wavelength range of 1.4-1.61 μm when the bending radius is 60 mm. However, the research progress on bending loss in the mid-infrared band has been relatively slow, mainly because the wavelength is longer and it is more sensitive to the loss caused by bending deformation.…”

Section: Introductionmentioning

confidence: 99%

Mid-Infrared 2.79 μm Band Er, Cr: YSGG Laser Transmission Anti-Bending Low-Loss Anti-Resonant Hollow-Core Fiber

Huang,

Wang,

Wang

et al. 2024

Preprint

View full text Add to dashboard Cite

A large core size and bending resistance are very important properties of mid-infrared energy transfer fibers, but large core sizes usually lead to a deterioration of bending properties. A negative-curvature nested node-free anti-resonant hollow-core fiber (AR-HCF) based on quartz is proposed. It was made by adding a nested layer to a previous AR-HCF design to provide an additional anti-resonance region while keeping the gap between adjacent tubes strictly correlated to the core diameter to produce a node-free structure. These features improve the fiber’s bending resistance while achieving a larger core diameter. The simulation results show that the radial air-glass anti-resonant layer is increased by the introduction of the nested anti-resonant tube, and the weak interference overlap between the fiber core and the cladding mode is reduced, so the fiber core’s limiting loss and the sensitivity to bending are effectively reduced. When the capillary wall thickness t of the fiber is 0.71 μm, the core diameter D is 70 μm, the ratio of the inner diameter of the cladding capillary to the core diameter d/D is 0.62, and the diameter of the nested tube is d0=29 μm, the fiber has a lower limiting loss at the wavelength of 2.79 μm, and the limiting loss is 3.28×10-4 dB/m. At the same time, the optimized structure also has good bending resistance. When the bending radius is 30 mm, the bending loss is only 4.72×10-2 dB/m. To our knowledge, this is the first research to achieve an anti-bending low-loss micro-structure hollow fiber with a bending radius of less than 30 mm in the 2.79 μm band. An anti-bending low-loss anti-resonant hollow-core fiber with this structure constitutes a reliable choice for the light guiding system of a 2.79 μm band erbium laser therapy instrument.

show abstract

“…In 2022, Zhao et al [13] designed a nested hollow-core fiber with a bending loss of 0.001 dB/m at a minimum bending radius of 50 mm and a wavelength of 1.55 µm. In the same year, Liu et al [14] designed an AR-HCF with a glass sheet nested structure and calculated that its bending loss of LP 01 -LP 31 mode was less than 3.0 × 10 −4 dB/m in the wavelength range of 1.4-1.61 µm when the bending radius was 60 mm. However, research progress on bending loss in the mid-infrared band has been relatively slow, mainly because the wavelength is longer and it is more sensitive to the loss caused by bending deformation.…”

Section: Introductionmentioning

confidence: 99%

Mid-Infrared 2.79 μm Band Er, Cr: Y3Sc2Ga3O12 Laser Transmission Anti-Bending Low-Loss Anti-Resonant Hollow-Core Fiber

Huang,

Wang,

Wang

et al. 2024

Photonics

View full text Add to dashboard Cite

A large core size and bending resistance are very important properties of mid-infrared energy transfer fibers, but large core sizes usually lead to the deterioration of bending properties. A negative-curvature nested node-free anti-resonant hollow-core fiber (AR-HCF) based on quartz is proposed. It was made by adding a nested layer to a previous AR-HCF design to provide an additional anti-resonance region while keeping the gap between adjacent tubes strictly correlated with the core diameter to produce a node-free structure. These features improve the fiber’s bending resistance while achieving a larger core diameter. The simulation results show that the radial air–glass anti-resonant layer is increased by the introduction of the nested anti-resonant tube, and the weak interference overlap between the fiber core and the cladding mode is reduced, so the fiber core’s limiting loss and sensitivity to bending are effectively reduced. When the capillary wall thickness t of the fiber is 0.71 μm, the core diameter D is 70 μm, the ratio of the inner diameter of the cladding capillary to the core diameter d/D is 0.62, the diameter of the nested tube is d0 = 29 μm, the fiber has a lower limiting loss at the wavelength of 2.79 μm, and the limiting loss is 3.28 × 10−4 dB/m. At the same time, the optimized structure also has good bending resistance. When the bending radius is 30 mm, the bending loss is only 4.72 × 10−2 dB/m. An anti-bending low-loss micro-structure hollow fiber with a bending radius of less than 30 mm was successfully achieved in the 2.79 μm band. An anti-bending low-loss anti-resonant hollow-core fiber with this structure constitutes a reliable choice for the light guiding system of a 2.79 μm band Er, Cr: YSGG laser therapy instrument.

show abstract

Low bending loss few-mode hollow-core anti-resonant fiber with glass-sheet conjoined nested tubes

Cited by 8 publications

References 28 publications

Low-loss weak-coupling 6-mode hollow-core negative curvature fiber based on symmetric double-ring nested tube

Low-loss weak-coupling 6-mode hollow-core negative curvature fiber based on symmetric double-ring nested tube

Mid-Infrared 2.79 μm Band Er, Cr: YSGG Laser Transmission Anti-Bending Low-Loss Anti-Resonant Hollow-Core Fiber

Mid-Infrared 2.79 μm Band Er, Cr: Y3Sc2Ga3O12 Laser Transmission Anti-Bending Low-Loss Anti-Resonant Hollow-Core Fiber

Contact Info

Product

Resources

About