Lotus-Shaped Negative Curvature Hollow Core Fiber With 10.5 dB/km at 1550 nm Wavelength

Nawazuddin, M. B. S.; Wheeler, Natalie V.; Hayes, J. R.; Sandoghchi, Seyed Reza; Bradley, Thomas D.; Jasion, Gregory T.; Slavı́k, Radan; Richardson, David J.; Poletti, Francesco

doi:10.1109/jlt.2017.2787197

Cited by 28 publications

(17 citation statements)

References 16 publications

(26 reference statements)

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“…The mechanism for guiding light within the light cage core relies on the specific combinations of parameters which make core and cladding modes antiresonant to each other . This interference-based effect, which is well-known in the context of hollow core fibers, − enables formation of leaky (i.e., dissipative) modes in the central region of the light cage, allowing for tightly guiding light along centimeter distances without any diffraction.…”

Section: Working Principle and Design Of Light Cagementioning

confidence: 99%

Locally Structured On-Chip Optofluidic Hollow-Core Light Cages for Single Nanoparticle Tracking

et al. 2022

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Nanoparticle tracking analysis (NTA) is a widely used methodology to investigate nanoscale systems at the single species level. Here, we introduce the locally structured on-chip optofluidic hollow-core light cage, as a novel platform for waveguide-assisted NTA. This hollow waveguide guides light by the antiresonant effect in a sparse array of dielectric strands and includes a local modification to realize aberration-free tracking of individual nano-objects, defining a novel on-chip solution with properties specifically tailored for NTA. The key features of our system are (i) well-controlled nano-object illumination through the waveguide mode, (ii) diffraction-limited and aberration-free imaging at the observation site, and (iii) a high level of integration, achieved by on-chip interfacing to fibers. The present study covers all aspects relevant for NTA including design, simulation, implementation via 3D nanoprinting, and optical characterization. The capabilities of the approach to precisely characterize practically relevant nanosystems have been demonstrated by measuring the solvency-induced collapse of a nanoparticle system which includes polymer brush-based shells that react to changes in the liquid environment. Our study unlocks the advantages of the light cage approach in the context of NTA, suggesting its application in various areas such as bioanalytics, life science, environmental science, or nanoscale material science in general.

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Section: Working Principle and Design Of Light Cagementioning

confidence: 99%

Locally Structured On-Chip Optofluidic Hollow-Core Light Cages for Single Nanoparticle Tracking

et al. 2022

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“…Several studies have proposed novel designs of low-loss NC-HCF for the near-IR with various cladding elements such as Kagome [9], circular tubes [10,11], nested tubes [12], conjoined tubes [13], elliptical tubes [14,15], lotus-shaped tubes [16], extended tubes [17], "ice cream cone" tubes [18], positively-negatively curved bars within tubes [19] and hybrid Kagome-tubular [20]. Also, a remarkable method of designing NC-HCF by using a reinforcement learning based method was also presented [21].…”

Section: Introductionmentioning

confidence: 99%

Hollow-core optical fiber with eight-pointed star cladding structure for low-loss transmission in telecom bands

Ordu¹

2021

Turk J Phys

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In this study, a novel negative curvature hollow-core fiber is proposed for low-loss transmission in the near-infrared region. We numerically investigate the effect of the cladding structure, which is formed of concentrically interlaced squares, to the confinement losses using the finite element modelling. The design has eight cladding tubes with nested elements placed to the outer edge of the tubes. The confinement losses of the interlaced square core fiber is calculated as low as 0.12 dB/km in the range of 1.3 to 1.65 µ m. The loss profile of the noncircular core design is comparable with the circular cores, and have improved transmission performance at 1.55 µ m. The proposed design can have numerous application areas such as data transmission, nonlinear optics and biochemical sensing.

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“…Compared with hollow-core photonic band-gap fiber (HC-PBGF), the HC-NCF has great advantages, including simple cladding structure, low transmission loss, large guidance bandwidth, so it has gradually become the research hotspot. In recent years, the HC-NCFs have been demonstrated for low loss transmission [ 3 , 4 ], gas detection [ 5 ], temperature sensing [ 6 ], etc. Surface plasmon resonance (SPR) effect, which is caused by the collective electronic vibration, generally occurs on the interface between the two media with opposite dielectric constants [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Hollow-Core Negative Curvature Fiber with High Birefringence for Low Refractive Index Sensing Based on Surface Plasmon Resonance Effect

Qiu

Yuan

Zhou

et al. 2020

Sensors

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In this paper, a hollow-core negative curvature fiber (HC-NCF) with high birefringence is proposed for low refractive index (RI) sensing based on surface plasmon resonance effect. In the design, the cladding region of the HC-NCF is composed of only one ring of eight silica tubes, and two of them are selectively filled with the gold wires. The influences of the gold wires-filled HC-NCF structure parameters on the propagation characteristic are investigated by the finite element method. Moreover, the sensing performances in the low RI range of 1.20–1.34 are evaluated by the traditional confinement loss method and novel birefringence analysis method, respectively. The simulation results show that for the confinement loss method, the obtained maximum sensitivity, resolution, and figure of merit of the gold wires-filled HC-NCF-based sensor are −5700 nm/RIU, 2.63 × 10−5 RIU, and 317 RIU−1, respectively. For the birefringence analysis method, the obtained maximum sensitivity, resolution, and birefringence of the gold wires-filled HC-NCF-based sensor are −6100 nm/RIU, 2.56 × 10−5 RIU, and 1.72 × 10−3, respectively. It is believed that the proposed gold wires-filled HC-NCF-based low RI sensor has important applications in the fields of biochemistry and medicine.

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Lotus-Shaped Negative Curvature Hollow Core Fiber With 10.5 dB/km at 1550 nm Wavelength

Cited by 28 publications

References 16 publications

Locally Structured On-Chip Optofluidic Hollow-Core Light Cages for Single Nanoparticle Tracking

Locally Structured On-Chip Optofluidic Hollow-Core Light Cages for Single Nanoparticle Tracking

Hollow-core optical fiber with eight-pointed star cladding structure for low-loss transmission in telecom bands

Hollow-Core Negative Curvature Fiber with High Birefringence for Low Refractive Index Sensing Based on Surface Plasmon Resonance Effect

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