Results 201 to 210 of about 9,233 (255)
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Supercontinuum generation in tapered fibers
Optics Letters, 2000Supercontinuum light with a spectrum more than two octaves broad (370-1545 nm at the 20-dB level) was generated in a standard telecommunications fiber by femtosecond pulses from an unamplified Ti:sapphire laser. The fiber had been tapered to a diameter of :2mum over a 90-mm length. The pulse energy was 3.9 nJ (average power, 300 mW).
T A, Birks, W J, Wadsworth, P S, Russell
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SPIE Proceedings, 1988
Fused tapered couplers are typically cladding-mode devices although the effect of the core is not always negligible. Tapers of single fibers may be used as a building-block to their understanding. If the tapering is not slow, then higher-order mode coupling effects occur. This degrades the coupling between fibers in a fused coupler.
R. J. Black +4 more
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Fused tapered couplers are typically cladding-mode devices although the effect of the core is not always negligible. Tapers of single fibers may be used as a building-block to their understanding. If the tapering is not slow, then higher-order mode coupling effects occur. This degrades the coupling between fibers in a fused coupler.
R. J. Black +4 more
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Journal of Lightwave Technology, 1992
A model for the shape of optical fiber tapers, formed by stretching a fiber in a heat source of varying length, is presented. Simple assumptions avoid any need for the techniques of fluid mechanics. It is found that any decreasing shape of taper can be produced.
T.A. Birks, Y.W. Li
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A model for the shape of optical fiber tapers, formed by stretching a fiber in a heat source of varying length, is presented. Simple assumptions avoid any need for the techniques of fluid mechanics. It is found that any decreasing shape of taper can be produced.
T.A. Birks, Y.W. Li
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Tapered polarizing anisotropic fibers
Optics Letters, 1988Under the assumption of weak guidance and weak anisotropy, tapered anisotropic fibers with equal or nearly equal anisotropy in the core and cladding are discussed theoretically. This study shows that, by properly choosing the external refractive index, one of the polarized modes can be filtered by the taper in an anisotropic fiber while the other ...
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Liquid-crystal-clad tapered fibers
Optics Letters, 1986The capability of changing the optical output of a tapered single-mode fiber by using a liquid crystal as an electrelectrooptical medium is shown.
C, Veilleux, J, Lapierre, J, Bures
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Thulium fiber laser lithotripsy using tapered fibers
Lasers in Surgery and Medicine, 2010AbstractIntroductionThe Thulium fiber laser has recently been tested as a potential alternative to the Holmium:YAG laser for lithotripsy. This study explores use of a short taper for expanding the Thulium fiber laser beam at the distal tip of a small‐core fiber.MethodsThulium fiber laser radiation with a wavelength of 1,908 nm, 10 Hz pulse rate, 70 mJ ...
Richard L, Blackmon +2 more
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Photonic bandgap fiber tapers and in-fiber interferometric sensors
Optics Letters, 2009Nonadiabatic tapers in hollow-core air-silica photonic bandgap fibers (PBFs) were fabricated by the use of a fiber fusion splicer. In addition to the well-known scaling down of fiber dimensions, the innermost rings of air holes were found collapsed or significantly deformed, which results in almost doubling the diameter of the hollow core in the ...
Ju, J, Ma, L, Jin, W, Hu, Y
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Nonlinear Analysis: Theory, Methods & Applications, 1990
A fiber tapering problem is described as follows: \[ A_ t+(uA)_ x=0,\quad A(x,t)>0,\quad (\mu Au_ x)=0,\text{ for ...
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A fiber tapering problem is described as follows: \[ A_ t+(uA)_ x=0,\quad A(x,t)>0,\quad (\mu Au_ x)=0,\text{ for ...
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Optics Letters, 2016
Employing finite difference time domain simulations, we demonstrate that electromagnetic field enhancement is substantially greater for tapered optical fibers with plasmonic nanostructures present on their tips as compared with non-tapered optical fibers having those plasmonic nanostructures, or with tapered optical fibers without the plasmonic ...
Priten, Savaliya, Anuj, Dhawan
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Employing finite difference time domain simulations, we demonstrate that electromagnetic field enhancement is substantially greater for tapered optical fibers with plasmonic nanostructures present on their tips as compared with non-tapered optical fibers having those plasmonic nanostructures, or with tapered optical fibers without the plasmonic ...
Priten, Savaliya, Anuj, Dhawan
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