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公开(公告)号：AU753653B2
公开(公告)日：2002-10-24
申请号：AU2214499
申请日：1999-01-07
Applicant: CORNING INC
Inventor： HAWK ROBERT M , NOLAN DANIEL A , TARCZA STEVEN H
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公开(公告)号：CA2054873C
公开(公告)日：2002-04-09
申请号：CA2054873
申请日：1991-11-04
Applicant: CORNING INC
Inventor： BERKEY GEORGE E , BHAGAVATULA VENKATA A , HAWK ROBERT M , TARCZA STEVEN H
IPC: G02B6/00 , C03B37/012 , C03B37/014 , C03B37/018 , C03B37/02 , C03C15/00 , C03C25/68 , G02B6/024 , C03B37/027
Abstract: Disclosed is a method of making a polarization retaining single-mode optical fiber. Longitudinal grooves are formed on opposite sides of a cylindrically-shaped core preform having a glass core surrounded by cladding glass. The core preform is inserted into a glass tube, the tube is shrunk onto the core preform, and the interface between the core preform and the tube is fused to form a solid preform having longitudinal apertures on opposite sides of the core. An etchant gas is flowed through the apertures to enlarge the apertures into holes having a substantially round cross-section. Inserted into each aperture is a stress rod formed of glass having a coefficient of expansion different from that of the cladding glass. The resultant draw blank is drawn to form a single-mode optical fiber having a core that is subjected to a stress-induced birefringence.
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公开(公告)号：ID28479A
公开(公告)日：2001-05-31
申请号：ID20010788
申请日：1999-08-20
Applicant: CORNING INC
Inventor： BHAGAVATULA VENKATA A , HAWK ROBERT M
IPC: C03B37/012 , G02B6/02 , G02B6/036 , G02B6/17 , G02B6/22
Abstract: Disclosed are a single mode waveguide fiber and a multimode waveguide fiber which have a radially non-uniform and azimuthally asymmetric core, and methods of making such a waveguide fiber. This asymmetry provides additional degrees of freedom for use in forming a waveguide having particular performance characteristics.
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公开(公告)号：BR9913124A
公开(公告)日：2001-05-15
申请号：BR9913124
申请日：1999-08-20
Applicant: CORNING INC
Inventor： BHAGAVANTULA VENKATA A , HAWK ROBERT M
IPC: C03B37/012 , G02B6/02 , G02B6/036 , G02B6/17 , G02B6/22
Abstract: Disclosed are a single mode waveguide fiber and a multimode waveguide fiber which have a radially non-uniform and azimuthally asymmetric core, and methods of making such a waveguide fiber. This asymmetry provides additional degrees of freedom for use in forming a waveguide having particular performance characteristics.
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公开(公告)号：AU2214499A
公开(公告)日：1999-08-02
申请号：AU2214499
申请日：1999-01-07
Applicant: CORNING INC
Inventor： HAWK ROBERT M , NOLAN DANIEL A , TARCZA STEVEN H
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Patent Agency Ranking
公开(公告)号：AU726785B2
公开(公告)日：2000-11-23
申请号：AU3956797
申请日：1997-04-11
Applicant: CORNING INC
Inventor： HAWK ROBERT M
IPC: G02B6/04 , C03B37/012 , C03B37/027 , G02B6/02 , G02B6/036 , G02B6/10 , G02B6/00
Abstract: A single-mode elliptical core optical fiber (15) suitable for the transmission of solitons has a core aspect ratio that changes along the length of the fiber to provide a fiber dispersion that monotonically decreases along the fiber from one end thereof to the other. The fiber preform (30) is drawn from a draw blank (10) having a glass core (11) surrounded by cladding glass (12) and having apertures (13) that are diametrically opposed with respect to the core (11). The cross-sectional area of the void space within the apertures (13) varies with respect to the longitudinal distance along the apertures.
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公开(公告)号：BR9906917A
公开(公告)日：2000-10-17
申请号：BR9906917
申请日：1999-01-07
Applicant: CORNING INC
Inventor： HAWK ROBERT M , NOLAN DANIEL A , TARCZA STEVEN H
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公开(公告)号：CA2313086A1
公开(公告)日：1999-07-22
申请号：CA2313086
申请日：1999-01-07
Applicant: CORNING INC
Inventor： NOLAN DANIEL A , HAWK ROBERT M , TARCZA STEVEN H
IPC: G02B6/02 , G02B6/028 , G02F1/365 , G02F1/377 , G02F1/383 , H04B10/135 , H04B10/18 , G02B6/16 , G02B6/18 , G02F1/35
Abstract: Disclosed is a single mode optical waveguide fiber having a core region refractive index profile designed to provide a highly non-linear refractive index. The core index profile of the highly non-linear waveguide is an .alpha.profile which has pre-selected values of relative refractive index and core diameter so as to retain the advantageous optical waveguide properties of low attenuation, properly placed zero dispersion and cut off wavelengths, low, positive total dispersion over a pre-selected wavelength range, and low dispersion slope.
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公开(公告)号：CA2224344A1
公开(公告)日：1997-10-12
申请号：CA2224344
申请日：1997-07-03
Applicant: CORNING INC
Inventor： HAWK ROBERT M , GALLAGHER DANIEL E , KIEFER WILLIAM J , CHRISTOFF WILLIAM R , BLASZYK PAUL E
IPC: G02B6/00 , C03B37/027 , C03B37/03 , C03B37/12 , C03C25/00 , C03C25/12 , C03B37/035 , C03B37/10
Abstract: Optical fiber is provided with a periodically reversing spin while the fiber is pulled through a melt zone. A cooled region of the fiber downstream fro m the melt zone passes between a pair of opposed elements. The opposed elements are moved so that surface regions engaging the fiber move in opposite lateral directions relative to one another, thus spinning the fiber about its ax is. The lateral movement of the engaged surface portions is periodically reversed to reverse the spin direction. The opposed elements may include belts or rollers, which can be tilted to orientations oblique to the longitudinal direction of the fiber.
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公开(公告)号：CA2240528A1
公开(公告)日：1997-08-28
申请号：CA2240528
申请日：1997-02-19
Applicant: CORNING INC
Inventor： HAWK ROBERT M
IPC: C03B37/027 , C03B37/03 , C03B37/12 , G02B6/00
Abstract: A fiber (106) having low polarization mode dispersion is made by heating the end of a preform (100) with a furnace (101). The fiber is drawn from the heated end. The fiber passes between two rollers (102, 104). As the fiber passes therebetween, the angular tilt of each of the rollers is changed so that a spin is imparted to the fiber.
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