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公开(公告)号：DE69122955T2
公开(公告)日：1997-02-27
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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公开(公告)号：AU660522B2
公开(公告)日：1995-06-29
申请号：AU3211693
申请日：1993-01-29
Applicant: CORNING INC
Inventor： HALL DOUGLAS WARREN , ANTOS ANTHONY JOSEPH , BLANKENSHIP MICHAEL GREGG , MURPHY EDWARD FRANCIS , SMITH DAVID KINNEY
Abstract: A silica based dispersion compensating optical waveguide fiber includes a core region and a surrounding clad layer. The core region has a refractive index profile which includes a central core region doped with an index raising dopant having a positive central core region index of refraction with a positive Delta %, surrounded by a core moat region having a negative moat region index of refraction with a negative Delta %. The clad layer has a clad index of refraction, said central core region index of refraction being greater than said clad index of refraction which is greater than said core moat region index of refraction. The fiber has a dispersion Ddcf more negative than -20 ps/nm-km at a given wavelength in the range of 1520nm to 1565nm, an attenuation at the given wavelength in the range of 1520nm to 1565nm less than 1 dB/km with a negative average dispersion slope Sdcf (ps/nm ) in the wavelength range of 1520nm to 1565nm, and the dispersion at the given wavelength in the range of 1520nm to 1565nm divided by the attenuation at the given wavelength in the range of 1520nm to 1565nm is more negative than -120 ps/nm-dB.
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公开(公告)号：AU660522C
公开(公告)日：2003-01-23
申请号：AU3211693
申请日：1993-01-29
Applicant: CORNING INC
Inventor： HALL DOUGLAS WARREN , ANTOS ANTHONY JOSEPH , BLANKENSHIP MICHAEL GREGG , MURPHY EDWARD FRANCIS , SMITH DAVID KINNEY
Abstract: A silica based dispersion compensating optical waveguide fiber includes a core region and a surrounding clad layer. The core region has a refractive index profile which includes a central core region doped with an index raising dopant having a positive central core region index of refraction with a positive Delta %, surrounded by a core moat region having a negative moat region index of refraction with a negative Delta %. The clad layer has a clad index of refraction, said central core region index of refraction being greater than said clad index of refraction which is greater than said core moat region index of refraction. The fiber has a dispersion Ddcf more negative than -20 ps/nm-km at a given wavelength in the range of 1520nm to 1565nm, an attenuation at the given wavelength in the range of 1520nm to 1565nm less than 1 dB/km with a negative average dispersion slope Sdcf (ps/nm ) in the wavelength range of 1520nm to 1565nm, and the dispersion at the given wavelength in the range of 1520nm to 1565nm divided by the attenuation at the given wavelength in the range of 1520nm to 1565nm is more negative than -120 ps/nm-dB.
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公开(公告)号：DE69327120T2
公开(公告)日：2000-04-20
申请号：DE69327120
申请日：1993-01-20
Applicant: CORNING INC
Inventor： ANTOS ANTHONY JOSEPH , HALL DOUGLAS WARREN , BLANKENSHIP MICHAEL GREGG , MURPHY EDWARD FRANCIS , SMITH DAVID KINNEY
Abstract: A silica based dispersion compensating optical waveguide fiber includes a core region and a surrounding clad layer. The core region has a refractive index profile which includes a central core region doped with an index raising dopant having a positive central core region index of refraction with a positive Delta %, surrounded by a core moat region having a negative moat region index of refraction with a negative Delta %. The clad layer has a clad index of refraction, said central core region index of refraction being greater than said clad index of refraction which is greater than said core moat region index of refraction. The fiber has a dispersion Ddcf more negative than -20 ps/nm-km at a given wavelength in the range of 1520nm to 1565nm, an attenuation at the given wavelength in the range of 1520nm to 1565nm less than 1 dB/km with a negative average dispersion slope Sdcf (ps/nm ) in the wavelength range of 1520nm to 1565nm, and the dispersion at the given wavelength in the range of 1520nm to 1565nm divided by the attenuation at the given wavelength in the range of 1520nm to 1565nm is more negative than -120 ps/nm-dB.
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公开(公告)号：DE69409586D1
公开(公告)日：1998-05-20
申请号：DE69409586
申请日：1994-07-14
Applicant: CORNING INC
Inventor： HALL DOUGLAS WARREN , SHARPS JULIA ALYSON , JAKOBSON PAUL ANTHONY , BARTHOLOMEW ROGER FRANK CORNIN
Abstract: A package for a high power semiconductor laser comprising a hermetically sealed container filled with a dry gaseous medium containing oxygen. The package also may include a getter for organic impurities, e.g., a getter composed of a porous silica or a zeolite. The hydrogen content of the materials used to form the package can be reduced by baking at an elevated temperature for an extended period of time, e.g., at 150 DEG C for 200 hours.
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Patent Agency Ranking
公开(公告)号：HK178895A
公开(公告)日：1995-12-01
申请号：HK178895
申请日：1995-11-23
Applicant: CORNING INC
Inventor： HALL DOUGLAS WARREN , NEWHOUSE MARK ANDREW
IPC: G02B6/00 , H01S3/06 , H01S3/067 , H01S3/07 , H01S3/094 , H01S3/10 , H01S3/17 , H01S3/23 , H01S3/091 , H04B10/16 , G02B6/16 , G02F1/00
Abstract: Disclosed is a fiber amplifier system including a gain fiber (10) having a single-mode core containing dopant ions capable of producing stimulated emission of light at wavelength lambda s when pumped with light of wavelength lambda p. Absorbing ion filtering means (17) is operatively associated with the gain fiber (10) to alter the gain curve. If the absorbing ions are the same as the gain ions of the gain fiber, the system further includes means for preventing pump light from exciting the gain ions of the filtering means (17). The excitation prevention means may take the form of means for attenuating pump light. If the absorbing ions are different from the dopant ions of the gain fiber, such absorbing ions can be subjected to light at wavelength lambda p, but they will remain unexcited. Such absorbing ions can be used to co-dope the gain fiber, or they can be incorporated into the core of a fiber that is in series with the gain fiber.
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公开(公告)号：AU653982B2
公开(公告)日：1994-10-20
申请号：AU1067392
申请日：1992-02-05
Applicant: CORNING INC
Inventor： HALL DOUGLAS WARREN , HAWK ROBERT MARTIN
IPC: G02B6/00 , G02B6/26 , G02B6/28 , G02B6/34 , H01S3/06 , H01S3/07 , H01S3/10 , H01S3/17 , G02B6/02 , G02F1/39
Abstract: The disclosed fiber optic filter structure includes an optical fiber having a single-mode core surrounded by cladding material, and at least one light-attenuating light path in the cladding material uniformly spaced from the single-mode core. The propagation constants of the single-mode core and the light path are different at wavelengths except for at least one wavelength lambda f. The spacing between the single-mode core and the light path are sufficiently small that light within a first band of wavelengths centered around lambda f couples between the single-mode core and the light path. At least a portion of the light within the first band of wavelengths is absorbed in the light path. In that embodiment in which the single-mode core is a fiber amplifier gain core, the filtering function of the light path modifies the fiber amplifier gain spectrum.
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公开(公告)号：DE69102440T2
公开(公告)日：1994-10-06
申请号：DE69102440
申请日：1991-01-18
Applicant: CORNING INC
Inventor： LERMINIAUX CHRISTIAN , LABORDE PASCALE , BENVENISTE CARLOS OBADIA NISSI , HALL DOUGLAS WARREN , JANSEN RICHARD
IPC: G02B6/00 , G02B6/12 , G02B6/122 , G02B6/13 , G02B6/30 , G02F1/35 , H01S3/06 , H01S3/063 , H01S3/07 , H01S3/094 , H01S3/10 , H01S3/17 , H01S3/23
Abstract: An optical signal amplifier with a waveguide path integrated into a glass body (7) that is doped with optically active material. The signal to be amplified is transmitted through the waveguide (1') and the pump power (8) is coupled into the waveguide at one end. The waveguide (1') comprises closely spaced adjacent guide lengths in the form of a spiral, zigzag paths between mirrors (10), or parallel paths with connecting semicircles (12) at alternating ends of succeeding pairs of paths.
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公开(公告)号：AU653206B2
公开(公告)日：1994-09-22
申请号：AU1215992
申请日：1992-03-10
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 , H01S3/17 , G02B6/26 , G02F1/39 , H04B10/16
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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公开(公告)号：AU1067392A
公开(公告)日：1992-08-20
申请号：AU1067392
申请日：1992-02-05
Applicant: CORNING INC
Inventor： HALL DOUGLAS WARREN , HAWK ROBERT MARTIN
IPC: G02B6/00 , G02B6/26 , G02B6/28 , G02B6/34 , H01S3/06 , H01S3/07 , H01S3/10 , H01S3/17 , G02B6/02 , G02F1/39
Abstract: The disclosed fiber optic filter structure includes an optical fiber having a single-mode core surrounded by cladding material, and at least one light-attenuating light path in the cladding material uniformly spaced from the single-mode core. The propagation constants of the single-mode core and the light path are different at wavelengths except for at least one wavelength lambda f. The spacing between the single-mode core and the light path are sufficiently small that light within a first band of wavelengths centered around lambda f couples between the single-mode core and the light path. At least a portion of the light within the first band of wavelengths is absorbed in the light path. In that embodiment in which the single-mode core is a fiber amplifier gain core, the filtering function of the light path modifies the fiber amplifier gain spectrum.
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