Extruded soft glass photonic crystal fiber for ultrabroad supercontinuum generation

Kumar, V.V. Ravi Kanth; George, A.K.; Reeves, W.H.; Knight, Jonathan C.; Russell, P.St.J.; Omenetto, Fiorenzo G.; Taylor, Antoinette J.

doi:10.1364/oe.10.001520

Cited by 270 publications

(88 citation statements)

References 2 publications

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“…Silica glass and germania glass are the most common materials for fiber fabrication. Other types of glasses such as SF6 can also be used to extrude a specially designed fiber 20 . A well-developed Dirac cone has been shown to exist in the in-plane (k z 50) band structure of a photonic crystal consisting of a triangular lattice of air columns in a GaAs substrate (refractive index contrast of 421) 17 .…”

Section: Resultsmentioning

confidence: 99%

Fiber guiding at the Dirac frequency beyond photonic bandgaps

et al. 2015

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Light trapping within waveguides is a key practice of modern optics, both scientifically and technologically. Photonic crystal fibers traditionally rely on total internal reflection (index-guiding fibers) or a photonic bandgap (photonic-bandgap fibers) to achieve field confinement. Here, we report the discovery of a new light trapping within fibers by the so-called Dirac point of photonic band structures. Our analysis reveals that the Dirac point can establish suppression of radiation losses and consequently a novel guided mode for propagation in photonic crystal fibers. What is known as the Dirac point is a conical singularity of a photonic band structure where wave motion obeys the famous Dirac equation. We find the unexpected phenomenon of wave localization at this point beyond photonic bandgaps. This guiding relies on the Dirac point rather than total internal reflection or photonic bandgaps, thus providing a sort of advancement in conceptual understanding over the traditional fiber guiding. The result presented here demonstrates the discovery of a new type of photonic crystal fibers, with unique characteristics that could lead to new applications in fiber sensors and lasers. The Dirac equation is a special symbol of relativistic quantum mechanics. Because of the similarity between band structures of a solid and a photonic crystal, the discovery of the Dirac-point-induced wave trapping in photonic crystals could provide novel insights into many relativistic quantum effects of the transport phenomena of photons, phonons, and electrons.

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Section: Resultsmentioning

confidence: 99%

Fiber guiding at the Dirac frequency beyond photonic bandgaps

et al. 2015

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“…Usually, this preform is then first drawn to a cane with a diameter of e. g. 1 mm, and thereafter into a fiber with the final diameter of e. g. 125 μm. Particularly soft glasses and polymers (plastics) also allow the fabrication of preforms for photonic crystal fibers by extrusion [9]. There is a great variety of hole arrangements, leading to photonic crystal fibers with very different properties.…”

Section: Hollow-core Photonic Crystal Fibers (Hc-pcfs)mentioning

confidence: 99%

Applications of photonic crystal fibers in navigation

Muse

2015

TAPR

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“…In contrast, bend sensors based on intensity measurement overcome the disadvantage [4]. Soft or compound glass fibers have generated widespread interest because of unique optical properties such as high nonlinearity, mid-IR transmission, and high rare earth solubility [5][6][7][8][9]. Sensing applications of soft glass fibers are becoming an important and promising research focus [10,11].…”

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confidence: 99%

Intensity measurement bend sensors based on periodically tapered soft glass fibers

et al. 2011

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We demonstrate a novel technique for tapering periodically an all-solid soft glass fiber, consisting of two types of lead silicate glasses, by the use of a focused CO2 laser beam and investigate the bend sensing applications of the periodicallytapered soft glass fiber. Such a soft glass fiber with periodic microtapers could be used to develop promising bend sensors with a sensitivity of -27.75 W/m -1 by means of measuring the bend-induced change of light intensity. The proposed bend sensor exhibits a very low measurement error of down to ± 1%.

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Extruded soft glass photonic crystal fiber for ultrabroad supercontinuum generation

Cited by 270 publications

References 2 publications

Fiber guiding at the Dirac frequency beyond photonic bandgaps

Fiber guiding at the Dirac frequency beyond photonic bandgaps

Applications of photonic crystal fibers in navigation

Intensity measurement bend sensors based on periodically tapered soft glass fibers

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