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公开(公告)号：DE69326135D1
公开(公告)日：1999-09-30
申请号：DE69326135
申请日：1993-12-06
Applicant: CORNING INC
Inventor： NOLAN DANIEL ALOYSIUS , WEIDMAN DAVID LEE
IPC: G02B6/28
Abstract: The achromatic fibre-optic coupler includes three single-mode optical fibres which are fused together along a portion of their lengths to form a coupling region. Each fibre includes a core and a cladding, the lowest refractive index of the fibre claddings being n2. The fibres are disposed in a triangular array in the coupling region. A matrix glass body of refractive index n3 surrounds the coupling region, n3 being lower than n2 by such an amount that the value of ~D2-3 is less than 0.125%, where ~D2-3 equals (n22?'-n32)/2n22.
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公开(公告)号：AU704263B2
公开(公告)日：1999-04-15
申请号：AU1774395
申请日：1995-04-27
Applicant: CORNING INC
Inventor： WEIDMAN DAVID LEE , YOUNG DONALD RAY JR
Abstract: A fiber optic coupler comprising a plurality of single-mode optical fibers, each of which is tapered to form a small diameter section that extends in contiguous relationship with the small diameter sections of the other fibers to form a coupling region. Each of the fibers has a core surrounded by a cladding of refractive index lower than that of the core. At least one of the fibers has a refractive index pedestal of refractive index ni between said core and cladding, wherein n1>ni>n2, n1 and n2 being the refractive indices of the core and cladding, respectively.
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公开(公告)号：AU4835597A
公开(公告)日：1998-06-25
申请号：AU4835597
申请日：1997-12-15
Applicant: CORNING INC
Inventor： BERKEY GEORGE EDWARD , LIOU LISA WAN-I , MODAVIS ROBERT ADAM , NOLAN DANIEL ALOYSIUS , WEIDMAN DAVID LEE
IPC: C03B37/014 , C03C13/04 , G02B6/02 , G02B6/10 , G02B6/12 , G02B6/122 , G02B6/293 , G02F1/313 , G02B1/00
Abstract: Athermalized optical waveguide devices and methods of making the athermalized devices are described. Boron is incorporated into the composition of the optical waveguides in order to athermalize the waveguides by reducing spectral shifts caused by changes in temperature. The invention includes the utilization of boron dopants in the core and cladding of optical waveguide devices such as Mach-Zehnder coupler devices and long period fiber gratings.
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公开(公告)号：AU7110196A
公开(公告)日：1997-04-17
申请号：AU7110196
申请日：1996-09-12
Applicant: CORNING INC
Inventor： WEIDMAN DAVID LEE
Abstract: A unitary fiber optic coupling device in which N fibers (N>/=3) extend in a parallel array having two coupling regions of reduced cross-sectional area. At least one of the fibers is formed of two sections that are situated end-to-end, an active core-containing fiber section that is situated in the first coupling region and a dummy fiber section that is situated in the second coupling region. The coupler also contains at least second and third fibers that are active core-containing fibers throughout their lengths. The second and third fibers couple to one another in the first coupling region but remain uncoupled to one another in the second coupling region. This configuration enables a unitary coupling device to posess multifunction capability. Two fibers that couple in the first coupling region do not couple in the second coupling region, thus avoiding resonance effects.
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公开(公告)号：DE69122955D1
公开(公告)日：1996-12-05
申请号：DE69122955
申请日：1991-11-27
Applicant: CORNING INC
Inventor： HALL DOUGLAS WARREN , MILLER WILLIAM JAMES , WEBB THOMAS WILLIAM , WEIDMAN DAVID LEE
IPC: G02F1/35 , G02B6/28 , G02B6/287 , G02B6/34 , H01S3/06 , H01S3/067 , H01S3/07 , H01S3/094 , H01S3/10
Abstract: Disclosed is a fiber amplifier system in which a gain fiber is operatively combined with a fiber optic coupler having first and second coupler optical fibers. The coupler fibers are fused together along a portion of their lengths to form a wavelength dependent coupling region whereby most of the light power of a wavelength lambda s couples between them, and most of the light power of a wavelength lambda p that is introduced into the first fiber remains in it. The mode field diameter of the first coupler fiber is substantially matched to that of the gain fiber and is smaller than that of the second coupler fiber. One end of the first coupler fiber is spliced to the gain fiber. A transmission fiber is spliced to the second coupler fiber, and a laser diode introduces pumping light of wavelength lambda p to the first coupler fiber. The fiber optic coupler preferably includes an elongated body of matrix glass through which the first and second coupler fibers extend. The matrix glass has a refractive index n3 that is lower than that of the fiber claddings. The fibers are fused together along with the midregion of the matrix glass, the fiber cores being more closely spaced at the central portion of the midregion than at the body endfaces, thereby forming the coupling region.
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Patent Agency Ranking
公开(公告)号：AU3175595A
公开(公告)日：1996-04-18
申请号：AU3175595
申请日：1995-09-20
Applicant: CORNING INC
Abstract: A method of making 1x2 or 2x2 overclad couplers, switches and the like such that the process is more reproducible and loss characteristics are improved. Such couplers are typically made by inserting the stripped portions of two active optical fibers (19,20) into a tube (10), heating the tube midregion to collapse it onto the fibers and stretching the central portion of the collapsed midregion to achieve the desired coupling characteristics. The improvement involves the insertion of one or two spacer (dummy) fibers (16) into the tube bore along with the active fibers to take up empty space that had been present in tube bore and to prevent an active fiber from sagging and crossing over the other fiber when the tube is heated during the tube collapse step.
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公开(公告)号：AU1774395A
公开(公告)日：1995-11-16
申请号：AU1774395
申请日：1995-04-27
Applicant: CORNING INC
Inventor： WEIDMAN DAVID LEE , YOUNG DONALD RAY JR
Abstract: A fiber optic coupler comprising a plurality of single-mode optical fibers, each of which is tapered to form a small diameter section that extends in contiguous relationship with the small diameter sections of the other fibers to form a coupling region. Each of the fibers has a core surrounded by a cladding of refractive index lower than that of the core. At least one of the fibers has a refractive index pedestal of refractive index ni between said core and cladding, wherein n1>ni>n2, n1 and n2 being the refractive indices of the core and cladding, respectively.
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公开(公告)号：AU654005B2
公开(公告)日：1994-10-20
申请号：AU1503792
申请日：1992-04-22
Applicant: CORNING INC
Inventor： NEWHOUSE MARK ANDREW , WEIDMAN DAVID LEE
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公开(公告)号：AU5263493A
公开(公告)日：1994-07-14
申请号：AU5263493
申请日：1993-12-22
Applicant: CORNING INC
Inventor： WEIDMAN DAVID LEE , NOLAN DANIEL ALOYSIUS
Abstract: The achromatic fibre-optic coupler includes three single-mode optical fibres which are fused together along a portion of their lengths to form a coupling region. Each fibre includes a core and a cladding, the lowest refractive index of the fibre claddings being n2. The fibres are disposed in a triangular array in the coupling region. A matrix glass body of refractive index n3 surrounds the coupling region, n3 being lower than n2 by such an amount that the value of ~D2-3 is less than 0.125%, where ~D2-3 equals (n22?'-n32)/2n22.
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公开(公告)号：AU4173593A
公开(公告)日：1994-01-20
申请号：AU4173593
申请日：1993-07-05
Applicant: CORNING INC
Inventor： WEIDMAN DAVID LEE
Abstract: An achromatic fiber optic coupler of the type wherein a plurality of single-mode optical fibers, each having a core and a cladding, are fused together along a portion of the lengths thereof to form a coupling region. The propagation constants of the fibers are preferably equal; however if the fiber claddings have different refractive indices, the lowest cladding refractive index is n2. A matrix glass body of refractive index n3 surrounds the coupling region, n3 being lower than n2 by such an amount that the value of DELTA 2-3 is less than 0.125%, wherein DELTA 2-3 equals (n2 n3 )/2n2 .
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