Antiresonant Hollow Core Fiber with Octave Spanning Bandwidth for Short Haul Data Communications

Hayes, J. R.; Sandoghchi, Seyed Reza; Bradley, Thomas D.; Liu, Zhixin; Slavı́k, Radan; Gouveia, M. A.; Wheeler, Natalie V.; Jasion, Gregory T.; Chen, Y.; Fokoua, Eric Numkam; Petrovich, M. N.; Richardson, David J.; Poletti, Francesco

doi:10.1364/ofc.2016.th5a.3

Cited by 28 publications

(42 citation statements)

References 14 publications

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“…In this practical case, the minimum simulated CL of the single-ring NCF becomes 7.5dB/km at 700nm. The reported fabricated fibers show similar loss levels [3][4][5][6][7]. Based on above analysis, how to prevent the outermost air layer to be in the resonant leakage region will be a crucial challenge [47].…”

Section: Light Confinements In Negative Curvature Fibermentioning

confidence: 99%

“…After 20 years development of hollow-core photonic crystal fiber (HC-PCF) [1,2], a type of fiber structure as simple as a ring of 6-8 untouched thin tubes surrounding the hollow core [3][4][5][6][7] has very recently emerged as the cutting-edge research area in fiber optics. This type of hollow-core fiber (HCF), referred to as hollow-core negative curvature fiber (NCF) in this paper (or more broadly named hollow-core anti-resonant fiber (ARF)) shows similar level of transmission loss and single modeness with the maturely developed hollow-core photonic-bandgap fiber (PBGF) and outperforms the PBGF in terms of broadband light guidance and high laser damage threshold.…”

Section: Introductionmentioning

confidence: 99%

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Confinement loss in hollow-core negative curvature fiber: A multi-layered model

Wang¹,

Ding²

2017

Opt. Express

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Abstract:Simple structures are always a pursuit but sometimes not easily attainable. It took researchers nearly two decades for conceiving the structure of single-ring hollow-core negative curvature fiber (NCF). Recently NCF eventually approaches to the centre of intense study in fiber optics. The reason behind this slow-pace development is, undoubtfully, its inexplicit guidance mechanism. This paper aims at gaining a clear physical insight into the optical guidance mechanism in NCF. To clarify the origins of light confinement, we boldly disassemble the NCF structure into several layers and develop a multi-layered model. Four physical origins, namely single-path Fresnel transmission through cascaded interfaces, near-grazing incidence, multi-path interference caused by Fresnel reflection, and glass wall shape are revealed and their individual contributions are quantified for the first time. Such an elegant model could not only elucidate the optical guidance in existing types of hollow-core fibers but also assist in design of novel structure for new functions.

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Section: Light Confinements In Negative Curvature Fibermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Confinement loss in hollow-core negative curvature fiber: A multi-layered model

Wang¹,

Ding²

2017

Opt. Express

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“…In practice, the proposed tube thicknesses in our design are achievable and have already been demonstrated in simpler single ring tubular fibers [38]. However, in order to relax the requirement for thin tubes and to allow easier fabrication, one can design the fiber to operate in the second anti-resonance window, if the full 550nm of low loss PM operation are not strictly required.…”

Section: Modified Bi-thickness Nanfsmentioning

confidence: 99%

Broadband high birefringence and polarizing hollow core antiresonant fibers

Mousavi¹,

Sandoghchi²,

Richardson³

et al. 2016

Opt. Express

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Abstract:We systematically study different approaches to introduce high birefringence and high polarization extinction ratio in hollow core antiresonant fibers. Having shown the ineffectiveness of elliptical cores to induce large birefringence in hollow core fibers, we focus on designing and optimizing polarization maintaining Hollow Core Nested Antiresonant Nodeless Fibers (HC-NANF). In a first approach, we create and exploit anti-crossings with glass modes at different wavelengths for the two polarizations. We show that suitable low loss high birefringence regions can be obtained by appropriately modifying the thickness of tubes along one direction while leaving the tubes in the orthogonal direction unchanged and in antiresonance. Using this concept, we propose a new birefringent NANF design providing low loss (~40dB/km) and high birefringence (>10 −4 ) over a record bandwidth of ~550nm, and discuss how bandwidth can be traded off to further reduce the loss to a few dB/km. Finally, we propose a polarization mode-stripping technique in the birefringent NANF. As a demonstration, we propose a polarizing birefringent NANF design that can achieve orthogonal polarization loss ratios as large as 30dB over the C-band while eliminating any undesirable polarization coupling effect thereby resulting in a single polarization output in a hollow core fiber regardless of the input polarization state.

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“…This has stimulated studies of dedicated photonic components such as InP-based modulators [7,8] or arrayed waveguide gratings [9]. High bit rate communications over distances exceeding one hundred meters have already been successfully demonstrated [10][11][12][13] in low-loss hollow core bandgap photonic fibers designed to present minimal losses around 2000 nm [14] or in solid-core single mode fibers [15].…”

Section: Introductionmentioning

confidence: 99%