Journal ArticleDOI
Single-Mode Photonic Band Gap Guidance of Light in Air.
R.F. Cregan,Brian Joseph Mangan,Jonathan Knight,Tim A. Birks,P. St. J. Russell,Peter John Roberts,Douglas C. Allan +6 more
TLDR
The confinement of light within a hollow core (a large air hole) in a silica-air photonic crystal fiber is demonstrated and certain wavelength bands are confined and guided down the fiber.Abstract:
The confinement of light within a hollow core (a large air hole) in a silica-air photonic crystal fiber is demonstrated Only certain wavelength bands are confined and guided down the fiber, each band corresponding to the presence of a full two-dimensional band gap in the photonic crystal cladding Single-mode vacuum waveguides have a multitude of potential applications from ultrahigh-power transmission to the guiding of cold atomsread more
Citations
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Journal ArticleDOI
Advances in Fiber‐Optic Technology for Point‐of‐Care Diagnosis and In Vivo Biosensing
Shawana Tabassum,Ratnesh Kumar +1 more
TL;DR: A unified presentation of the research trends on biosensors incorporated into optical fibers is presented and fiber‐optic biosensing has become a promising research thrust with a plethora of emerging methodologies to develop ultrasensitive and selective sensing probes.
Patent
Method of varying optical properties of photonic crystals on fast time scales using energy pulses
TL;DR: In this article, a method for fast switching of optical properties in photonic crystals using pulsed/modulated free-carrier injection is presented, where free carriers are used to vary dispersion curves, stop gaps in materials with photonic bandgaps, and vary the band gaps, reflection, transmission, absorption, gain, or phase.
Journal ArticleDOI
Simulation of mid-IR amplification in Er3+-doped chalcogenide microstructured optical fiber
Francesco Prudenzano,Luciano Mescia,L. Allegretti,M. De Sario,Frédéric Smektala,Virginie Moizan,Virginie Nazabal,Johann Troles,Jean-Louis Doualan,Guillaume Canat,Jean-Luc Adam,Brigitte Boulard +11 more
TL;DR: In this paper, an erbium doped microstructured optical fiber (MOF) amplifier operating in the mid-infrared (mid-IR) wavelength range, more precisely around 4.5 µm wavelength, has been investigated.
Journal ArticleDOI
Backscattering in antiresonant hollow-core fibers: over 40 dB lower than in standard optical fibers
Vincent Michaud-Belleau,E. Numkam Fokoua,Thomas D. Bradley,John R. Hayes,Yong Chen,Francesco Poletti,David J. Richardson,Jérôme Genest,Radan Slavik +8 more
TL;DR: In this article, the authors present the first measurement of backscattering from a low-loss antiresonant hollow-core fiber and show that it is more than 40 dB below reported values in silica-core and photonic bandgap fiber.
Journal ArticleDOI
Mid IR hollow core fiber gas laser emitting at 4.6 um
Farzin Beygi Azar Aghbolagh,Vasudevan Nampoothiri,Benoit Debord,Frédéric Gérôme,Luca Vincetti,Fetah Benabid,Wolfgang Rudolph +6 more
TL;DR: In this paper, an N2O filled hollow core fiber laser was observed to achieve a photon conversion efficiency of 9% and a slope efficiency of 3% at an optimum gas pressure of 80 Torr.
References
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Journal ArticleDOI
All-silica single-mode optical fiber with photonic crystal cladding
TL;DR: The fabrication of a new type of optical waveguide: the photonic crystal fiber that supports a single robust low-loss guided mode over a very broad spectral range of at least 458-1550 nm.
Journal ArticleDOI
Endlessly single-mode photonic crystal fiber.
TL;DR: An effective-index model confirms that an all-silica optical fiber made by embedding a central core in a two-dimensional photonic crystal with a micrometer-spaced hexagonal array of air holes can be single mode for any wavelength.
Journal ArticleDOI
Hollow metallic and dielectric waveguides for long distance optical transmission and lasers
TL;DR: In this paper, the field configurations and propagation constants of a hollow circular waveguide made of dielectric material or metal for application as an optical waveguide were determined and the increase of attenuation due to curvature of the axis was also determined.
Journal ArticleDOI
Photonic Band Gap Guidance in Optical Fibers
TL;DR: A fundamentally different type of optical waveguide structure is demonstrated, in which light is confined to the vicinity of a low-index region by a two-dimensional photonic band gap crystal.
Journal ArticleDOI
Full 2-D photonic bandgaps in silica/air structures
TL;DR: In this paper, full 2D photonic bandgaps are demonstrated for all polarisations in structures with refractive index contrast as small as that of silica and air, and a new type of optical fiber based on these structures is proposed.