Patent
Low water peak optical waveguide fiber and method of manufacturing same
George E. Berkey,Dana Craig Bookbinder,Richard Michael Fiacco,Cynthia B. Giroux,Daniel W. Hawtof,Dale R. Powers,V. Sirkant +6 more
TLDR
In this article, a cylindrical glass body having a low water content centerline region and method of manufacturing such a glass body for use in the manufacture of optical waveguide fiber is disclosed.Abstract:
A cylindrical glass body having a low water content centerline region and method of manufacturing such a cylindrical glass body for use in the manufacture of optical waveguide fiber is disclosed. The centerline region of the cylindrical glass body has a water content sufficiently low such that an optical waveguide fiber made from the cylindrical glass body of the present invention exhibits an optical attenuation of less than about 0.35 dB/km, and preferably less than about 0.31 dB/km at a measured wavelength of 1380nm. A low water content plug (46, 54) used in the manufacture of such a cylindrical glass body, an optical waveguide fiber having a low water peak, and an optical fiber communication system incorporating such an optical waveguide fiber is also disclosed.read more
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Patent
Single mode optical fiber
Louis-Anne de Montmorillon,Denis Molin,Pieter Matthijsse,Frans Gooijer,Emmanuel Petitfrere,Yves Lumineau,Franciscus Johannes Achten,Marianne Bigot-Astruc,Pierre Sillard,Pascale Nouchi +9 more
TL;DR: Disclosed is an optical transmission fiber having reduced bending and micro-bending losses that is commercially usable in FTTH or FTTC transmission systems as mentioned in this paper, but it is not suitable for FTTH systems.
Patent
Bend-insensitive single-mode optical fiber
De Montmorillon Louis-Anne,Richard Simon,Denis Molin,Boivin David,Marianne Bigot-Astruc,Pierre Sillard +5 more
TL;DR: In this paper, a singlemode optical fiber with bending losses of 0.15 dB/turn or less for a radius of curvature of 5 millimeters is presented, at a wavelength of 1550 nanometers.
Patent
Large effective area fiber
Scott R. Bickham,Dana Craig Bookbinder,Xin Chen,Ming-Jun Li,Snigdharaj Kumar Mishra,Daniel A. Nolan +5 more
TL;DR: In this paper, a glass core and a glass cladding surrounding and in contact with the core is presented, where the core comprises a maximum relative refractive index, Δ1max, relative to the third annular region, and wherein Δ1MAX is greater than about 0.1 % and less than about 3 %.
Patent
Microbend-Resistant Optical Fiber
Bob J. Overton,Louis-Anne de Montmorillon,Simon Richard,Denis Molin,Marianne Bigot-Astruc,Pierre Sillard,David Boivin +6 more
TL;DR: In this article, an improved, singlemode optical fiber possessing a novel coating system was presented. But the coating system is not suitable for fiber-to-the-premises (FTTx) systems.
Patent
Low bend loss optical fiber
TL;DR: In this paper, an optical fiber with a Young's modulus of less than 1.0 MPa and a glass transition temperature less than −25° C is presented, and the secondary coating has a Young modulus greater than 1200 MPa.
References
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Patent
Method for producing glass preform for optical fiber
TL;DR: In this paper, a rod-in-tube method for the fabrication of an optical fiber is described. But the method is not suitable for optical fiber fabrication with low attenuation of light transmission, and it requires at least one gaseous halogen-containing compound.
Patent
Dispersion-shifted fiber
TL;DR: In this paper, a dispersion-shifted fiber with a structure for effectively lowering polarization-mode dispersion was proposed, which is a singlemode optical fiber mainly composed of silica glass and has a zero-dispersion wavelength set within the range of at least 1.4 µm but not longer than 1.7 µm.
Patent
Production of optical fiber preform
Omae Toshikazu,Hiroyuki Tanaka,Yoshida Minoru,Morisawa Masaaki,Masataka Nakazawa,Kimura Yasuro +5 more
TL;DR: In this paper, the optical fiber preform in which the core soot is uniformly doped with rare-earth elements by impregnating the porous core soots produced by VAD method with an alcoholic soln contg rare earth elements in a specified manner was obtained.
Patent
Method for producing glass preform for optical fiber
TL;DR: In this paper, a method for producing a glass preform for an optical fiber which comprises the steps of inserting a glass rod from one end of a glass tube while supplying a gas from the other end of the glass tube, flowing the gas through a clearance between the glass rod and the glass tubes, exhausting the gas from said one end to outside of the gas tube, and heating and collapsing the glass pipe on the glass rods to integrate them and to form the glass pre-form.
Patent
Method of making optical devices
TL;DR: In this paper, a fiber optic coupler is formed by providing a glass tube having a longitudinal aperture extending therethrough, each having a core, cladding and coating are disposed within the longitudinal aperture, the fibers extending beyond each end thereof.