Design and analysis of a modified segmented cladding fiber with parabolic-profile core

Ma, Shaoshuo; Ning, Tigang; Li, Pei; Li, Jing; Jiao, Z.

doi:10.1088/1612-202x/aa9c03

Cited by 8 publications

(3 citation statements)

References 23 publications

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“…Regarding these issues, there is an inherent trade-off between the conflicting FOMs of the fiber [19]. Several different structures, such as LMA fibers with asymmetric bend compensation, segmented cladding fibers, PCFs, LCFs, and MCFs, have been proposed to reduce the trade-off between the mode area, single-mode operation, and FM loss of bent fibers [20][21][22][23][24][25][26][27][28][29][30]. Additionally, in polarization-preserving fibers, the birefringence induced by stress using SAPs not only removes one of the polarizations of all modes but also decreases the FM-guided polarization leakage [15].…”

Section: Introductionmentioning

confidence: 99%

Design of Single-Mode Single-Polarization Large-Mode-Area Multicore Fibers

Rashidi,

Fathi,

Maleki

et al. 2023

Micromachines

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In laser science and industry, considerable effort is directed toward designing fibers for fiber laser and fiber amplifier applications, each of which offers a particular advantage over the others. Evanescently coupled multicore fibers, however, have been studied less extensively due to the relatively small mode area in the single-mode regime. Here, by proposing a new structure with stress-applying parts in a 37-core fiber and optimizing this structure through a comprehensive framework, we present 21 solutions characterized by large-mode-area and high beam quality in the single-mode, single-polarization regime. Different fiber designs are optimal for different output parameters. In one design, the mode area can significantly increase to above 880 μm2, which is comparable with that of photonic-crystal fibers. Moreover, besides the single-mode operation, the beam quality factor (M2 factor) of the fundamental mode is considered an output parameter in the bent state and is improved up to 1.05 in another design. A comprehensive tolerance analysis is then performed to assess the performance of the designs under deviations from normal conditions. Moreover, in spite of the shifts in the loss of modes, the proposed high beam quality LMA fibers maintain single-polarization, single-mode operation across a wide range of core pitches, bending orientation angles, and bending radius deviations. Our results highlight the potential of multicore fibers for the efficient operation of fiber lasers and amplifiers.

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Section: Introductionmentioning

confidence: 99%

Design of Single-Mode Single-Polarization Large-Mode-Area Multicore Fibers

Rashidi,

Fathi,

Maleki

et al. 2023

Micromachines

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“…Gao et al [ 17 ] recently proposed an ultra-low-loss HC-PCF with an isolated anti-resonance layer, which achieved a confinement loss of below 3.5 dB/km at 1550 nm by using a 13 μm core diameter and an 8 μm effective mode field diameter. In addition, the bending loss and effective mode field area of HC-PCF were studied by Frosz et al [ 18 ] and Ma et al [ 19 ], respectively. HC-PCFs have also been widely studied in the field of trace gas or liquid sensing [ 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Characteristic Analysis and Structural Design of Hollow-Core Photonic Crystal Fibers with Band Gap Cladding Structures

Wan

Zhu

et al. 2021

Sensors

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Due to their flexible structure and excellent optical characteristics hollow-core photonic crystal fibers (HC-PCFs) are used in many fields, such as active optical devices, communications, and optical fiber sensing. In this paper, to analyze the characteristics of HC-PCFs, we carried out finite element analysis and analyzed the design for the band gap cladding structure of HC-PCFs. First, the characteristics of HC19-1550 and HC-1550-02 in the C-band were simulated. Subsequently, the structural optimization of the seven-cell HC-1550-02 and variations in characteristics of the optimized HC-1550-02 in the wavelength range 1250–1850 nm were investigated. The simulation results revealed that the optimal number of cladding layers is eight, the optimal core radius is 1.8 times the spacing of adjacent air holes, and the optimal-relative thickness of the core quartz-ring is 2.0. In addition, the low confinement loss bandwidth of the optimized structure is 225 nm. Under the transmission bandwidth of the optimized structure, the core optical power is above 98%, the confinement loss is below 9.0 × 10−3 dB/m, the variation range of the effective mode field area does not exceed 10 μm2, and the relative sensitivity is above 0.9570. The designed sensor exhibits an ultra-high relative sensitivity and almost zero confinement loss, making it highly suitable for high-sensitivity gas or liquid sensing.

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“…In order to overcome the difficulty caused by the fiber nonlinear effect, several special large mode area (LMA) fibers operating with effective single-mode (SM) are proposed [14][15]. These novel designs include photonic crystal fibers (PCFs) [16], leakage channel fibers (LCFs) [17][18], brag fibers (BFs) [19], all-solid photonic bandgap fibers (AS-PBFs) [20], chirally-coupled-core fibers (CCCFs) [21], Gainguided, index anti-guided fibers (GG+IAGFs) [22], segmented cladding fibers (SCFs) [23], single-trench fibers (STFs) [24], and multi-trench fibers (MTFs) [25][26]. Among these elaborate designs with different performances of SM operation and mode areas, SCFs show an attractive prospect due to their all-solid structure and potential to achieve SM operation and large mode area over a wide range of operating wavelengths.…”

Section: Introductionmentioning

confidence: 99%

Segmented Cladding Fiber With a High-Index Ring in Core for Wideband Single-Mode Operation in Any Bending Orientation

Guo

Ning

et al. 2021

IEEE Photonics J.

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A resonant-ring-assisted large mode area segmented cladding fiber (RR-SCF) with a high-index ring in the core is proposed. Numerical investigations of the effects of the high-index ring on the leakage losses of guiding modes, mode area, and electric field distribution of FM in the proposed fiber show the high-index ring not only increases the ratio of the loss between the fundamental mode (FM) and the higher-order modes (HOMs) but also improves the electric field distribution of the FM to be flat. By taking these advantages of the high-index-ring-assisted core, the effective single-mode (SM) operation is achieved in the proposed fiber bent in any orientation, which makes up the defect of the conventional RR-SCF that the SM output is affected by the bending orientation. Meanwhile, the mode area is enlarged. Furthermore, the effects of the heat load, duty cycle, bending, and operation wavelength on the fiber performance are analyzed. The results show single-mode operation in all bending orientations with a mode area larger than 824 μm 2 can be achieved at a tight bending radius of 15 cm to 16 cm when the operating wavelength ranges from 1.06 μm to 1.76 μm. This fiber shows great potential in high-power fiber lasers.

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Design and analysis of a modified segmented cladding fiber with parabolic-profile core

Cited by 8 publications

References 23 publications

Design of Single-Mode Single-Polarization Large-Mode-Area Multicore Fibers

Design of Single-Mode Single-Polarization Large-Mode-Area Multicore Fibers

Characteristic Analysis and Structural Design of Hollow-Core Photonic Crystal Fibers with Band Gap Cladding Structures

Segmented Cladding Fiber With a High-Index Ring in Core for Wideband Single-Mode Operation in Any Bending Orientation

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