Journal ArticleDOI
Hollow core waveguide for high quality CO2 laser beam delivery: exploitation of bend-induced mode coupling
TLDR
In this article, the mode coupling behavior inside a bent hollow waveguide is discussed, and experimental results for modal power coupling using single fundamental Gaussian mode beam inputs are presented.About:
This article is published in Optics Communications.The article was published on 1995-02-01. It has received 7 citations till now. The article focuses on the topics: Equilibrium mode distribution & Radiation mode.read more
Citations
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Journal ArticleDOI
Laser beam shaping using a single-mode fiber abrupt taper
TL;DR: The conversion efficiency of the new device from a Gaussian-shaped to a flat-top profile is comparable with that of a long-period-gratings-based device, while keeping the fabrication cost low.
Journal ArticleDOI
Silver-halide fiber tip as a beam homogenizer for infrared hollow waveguides.
TL;DR: A beam-homogenizing device consisting of a short tip of silver-halide infrared fiber eliminates the low-order multimode effect generated by bending of hollow guides with a small insertion loss of 0.2dB.
Proceedings ArticleDOI
Photonic crystal fibres for sensor applications
TL;DR: In this paper, the design principles for photonic crystal fibres, their practical fabrication and their potential and actual applications in sensor systems are described, as well as their application in sensor networks.
Proceedings ArticleDOI
Lensed taper coupler for hollow waveguides
TL;DR: In this article, a launching coupler for hollow fibers consisting of a convex lens and a tapered hollow-guide piece is proposed, which has a conical-tapered, Pyrex glass tube as the tapered section.
Proceedings ArticleDOI
Beam homogenizer for infrared hollow waveguides using silver-halide fiber tip
TL;DR: In this article, a beam homogenizing device consisting of a short tip of a silver-halide infrared fiber was proposed to remove the effect of low-order multimode generated by bending of hollow guides.
References
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Journal ArticleDOI
Optical and mechanical properties of single-crystal sapphire optical fibers
TL;DR: Teflon-FEP (perfluorinated ethylene propylene) is applied to sapphire fibers as a cladding and is extremely effective in preventing leakage of energy from the fibers into absorbing environments that may surround the fiber.
Journal ArticleDOI
Transmission of kilowatt-class CO 2 laser light through dielectric-coated metallic hollow waveguides for material processing
TL;DR: Although the focusing properties of the output beam should be improved for practical laser processing, this type of waveguide is promising for high-power CO(2) laser-light transmission.
Journal ArticleDOI
Hollow sapphire fibers for the delivery of CO(2) laser energy.
TL;DR: Hollow sapphire tubing has been used to deliver nearly single-mode CO(2) laser energy and bending losses are shown to vary as 1/R, and essentially only the HE(11) mode propagates in the bent guide.
Journal ArticleDOI
Waveguide laser mode patterns in the near and far field.
TL;DR: The difference in notations used by researchers in the dielectric waveguide field and those primarily interested in waveguide lasers is discussed, and the equations for the field components of the various modes in large radius hollow dielectrics waveguides are rederived in terms of the more widely used notation.
Journal ArticleDOI
Radiation from curved single-mode fibres
TL;DR: In this paper, a study of propagation in curved single-mode fibres showed that the transmission loss increases sharply below a critical bend radius, however the radiation does not leak away uniformly with distance but in a series of discrete well-defined rays.
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