Hypocycloid-shaped hollow-core photonic crystal fiber Part II: Cladding effect on confinement and bend loss

Alharbi, Meshaal; Bradley, Thomas D.; Debord, Benoît; Fourcade-Dutin, Coralie; Ghosh, Debashri; Vincetti, Luca; Gérôme, F.; Benabid, Fetah

doi:10.1364/oe.21.028609

Cited by 78 publications

(58 citation statements)

References 22 publications

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“…We believe that the discrepancy at larger bend radii is mainly due to the measurement uncertainty at low bend losses (<0.5 dB/m). The fiber has a bend-induced loss at 1032nm of~0.5dB/m and <0.5dB/m at 1064nm for 3cm bend radius, performing significantly better than previously reported in kagome HC fibers [23] and other AR-HC fibers [5] around these wavelengths. …”

Section: Bend Propertiesmentioning

confidence: 63%

Hollow-core fibers for high power pulse delivery

Michieletto¹,

Lyngsø²,

Jakobsen³

et al. 2016

Opt. Express

224

117

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Abstract:We investigate hollow-core fibers for fiber delivery of high power ultrashort laser pulses. We use numerical techniques to design an anti-resonant hollow-core fiber having one layer of non-touching tubes to determine which structures offer the best optical properties for the delivery of high power picosecond pulses. A novel fiber with 7 tubes and a core of 30µm was fabricated and it is here described and characterized, showing remarkable low loss, low bend loss, and good mode quality. Its optical properties are compared to both a 10µm and a 18µm core diameter photonic band gap hollow-core fiber. The three fibers are characterized experimentally for the delivery of 22 picosecond pulses at 1032nm. We demonstrate flexible, diffraction limited beam delivery with output average powers in excess of 70W. "Efficient spectral broadening in the 100-W average power regime using gas-filled kagome HC-PCF and pulse compression," Opt. Lett. 39, 6843-6846 (2014). 8. D. C. Jones, C. R. Bennett, M. a. Smith, and a. M. Scott, "High-power beam transport through a hollow-core photonic bandgap fiber," Opt. Lett. 39, 3122-3125 (2014). 9. T. P. Hansen, J. Broeng, C. Jakobsen, G. Vienne, H. R. Simonsen, M. D. Nielsen, P. M. W. Skovgaard, J. R.Folkenberg, and A. Bjarklev, "Air-guiding photonic bandgap fibers: spectral properties, macrobending loss, and practical handling," J. Light.

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Section: Bend Propertiesmentioning

confidence: 63%

Hollow-core fibers for high power pulse delivery

Michieletto¹,

Lyngsø²,

Jakobsen³

et al. 2016

Opt. Express

224

117

View full text Add to dashboard Cite

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“…As mentioned in the previous section, the use of this HC-ARF design enables much more freedom as compared to a HC-PBGF design. In the initial stacking process, significantly fewer capillaries are required due to the reduced number of cladding rings needed for low loss optical guidance (strictly only one ring is required for anti-resonant guidance and further rings can have benefits in terms of bend robustness in the final fibre 18 ). Furthermore, with the anti-resonant guidance mechanism, a core defect can be formed by removing just a single element from the lattice, as opposed to removing a minimum of 3 elements for a HC-PBGF.…”

Section: Fibre Fabricationmentioning

confidence: 99%

Dual hollow-core anti-resonant fibres

et al. 2016

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While hollow core-photonic crystal fibres are now a well-established fibre technology, the majority of work on these speciality fibres has been on designs with a single core for optical guidance. In this paper we present the first dual hollow-core anti-resonant fibres (DHC-ARFs). The fibres have high structural uniformity and low loss (minimum loss of 0.5 dB/m in the low loss guidance window) and demonstrate regimes of both inter-core coupling and zero coupling, dependent on the wavelength of operation, input polarisation, core separation and bend radius. In a DHC-ARF with a core separation of 4.3 µm, we find that with an optimised input polarisation up to 65% of the light guided in the launch core can be coupled into the second core, opening up applications in power delivery, gas sensing and quantum optics.

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“…To better understand HC-ARF, many theoretical efforts have been implemented, such as low DOS interpretation [27], inhibited coupling between the core mode and the circulating resonances along the glass web [28], radial light confinement by concentric glass rings [29], and overall spatial overlap between the core mode and the glass [30]. However, only qualitative conclusions can be drawn from these models.…”

Section: Introductionmentioning

confidence: 99%

Semi-analytical model for hollow-core anti-resonant fibers

Ding

Wang

2015

Front. Phys.

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We detailedly describe a recently-developed semi-analytical method to quantitatively calculate light transmission properties of hollow-core anti-resonant fibers (HC-ARFs). Formation of equiphase interface at fiber's outermost boundary and outward light emission ruled by Helmholtz equation in fiber's transverse plane constitute the basis of this method. Our semi-analytical calculation results agree well with those of precise simulations and clarify the light leakage dependences on azimuthal angle, geometrical shape and polarization. Using this method, we show investigations on HC-ARFs having various core shapes (e.g., polygon, hypocycloid) with single-and multi-layered core-surrounds. The polarization properties of ARFs are also studied. Our semi-analytical method provides clear physical insights into the light guidance in ARF and can play as a fast and useful design aid for better ARFs.

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Hypocycloid-shaped hollow-core photonic crystal fiber Part II: Cladding effect on confinement and bend loss

Cited by 78 publications

References 22 publications

Hollow-core fibers for high power pulse delivery

Hollow-core fibers for high power pulse delivery

Dual hollow-core anti-resonant fibres

Semi-analytical model for hollow-core anti-resonant fibers

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