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公开(公告)号：JP2001255432A
公开(公告)日：2001-09-21
申请号：JP2001028119
申请日：2001-02-05
Applicant: CORNING INC
Inventor： SMITH DAVID K
Abstract: PROBLEM TO BE SOLVED: To provide a single mode optical waveguide fiber designed to be used in a high performance communication system. SOLUTION: The core distribution of this invention is such that bending characteristics are improved for the purpose of providing improved durability in adverse environment. By providing a zero dispersion wavelength not less than the upper limit of an operation window, the total dispersion in the expanded wavelength window is maintained low. In addition, the cut-off frequency rises at the operation window or below. Even if a waveguide has an extremely low attenuation, the manufacturing convenience is maintained.
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公开(公告)号：JPH1164666A
公开(公告)日：1999-03-05
申请号：JP17447998
申请日：1998-06-22
Applicant: CORNING INC
Inventor： SMITH DAVID K
Abstract: PROBLEM TO BE SOLVED: To make it possible to exhibit a higher cut-off frequency than improvement of bending resistance and to impart low total dispersion in an expanded wavelength window by forming a waveguide fiber of a core region consisting of three regions and a clad layer enclosing these core regions, respectively providing the region and the layer with specific refractive index distributions and forming the core regions having inside and outside distribution volumes, etc., of a range of specific values. SOLUTION: This waveguide fiber has the core consisting of the three regions; the central region disposed with respect to the asymmetrical axis of the waveguide, the first adjacent region in contact with the central region and the second adjacent region in contact with the first adjacent region. The clad layer encloses the second adjacent region. When the refractive index distributions of the respective regions are compared, the central region (distributions 2, 4, etc.), and the second adjacent region (distributions 12, 14) have the refractive index relatively higher than the first adjacent region (distribution 10) and the clad layer (distribution 24). The waveguide has the inside distribution volume of the range of 2.90 to 3.90 and the outside distribution volume of the range of 7.20 to 10.20 and the ratio of the outside/inside distribution volumes is in a range of 1.96 to 3.04.
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公开(公告)号：JP2004246375A
公开(公告)日：2004-09-02
申请号：JP2004110395
申请日：2004-04-02
Applicant: Corning Inc , コーニング・インコーポレーテッド
Inventor： MA DAIPING , SMITH DAVID K
CPC classification number: G02B6/03644 , G02B6/02014 , G02B6/02238 , G02B6/02271 , G02B6/0228 , G02B6/0281 , G02B6/0286 , G02B6/03611 , G02B6/03633 , G06T17/20
Abstract: PROBLEM TO BE SOLVED: To provide a single-mode optical waveguide for removing nonlinear effect such as FWM and SPM which occur in a high-performance and high-speed system. SOLUTION: The single-mode optical waveguide has a three-segment core having first to third segments 26, 28, and 30, whose relative refractive indexes, refractive index distributions, and radii are so selected as to have characteristics suitable to the high-performance, high-speed system within a wavelength range of about 1,530 to 1,570 nm. Further, the effective sectional area of the waveguide is >about 60 μm 2 , preferably, >65 μm 2 , and most preferably >70 μm 2 . Total dispersion is 1,530 nm and positive and at least 2 ps/nm-k and a dispersion gradient is 2 -km. COPYRIGHT: (C)2004,JPO&NCIPI
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公开(公告)号：JP2002250834A
公开(公告)日：2002-09-06
申请号：JP2001377872
申请日：2001-12-11
Applicant: CORNING INC
Inventor： ANTOS A JOSEPH , BLANKENSHIP MICHAEL G , HALL DOUGLAS WARREN , MURPHY EDWARD F , SMITH DAVID K
Abstract: PROBLEM TO BE SOLVED: To provide a dispersion compensating optical fiber and a transmission system which compensate dispersion in the case of using a transmission fiber having zero dispersion in the wavelength of about 1310 nm in the band of 1550 nm. SOLUTION: The dispersion compensating optical fiber is provided with negative dispersion and zero or a negative dispersion gradient within the wavelength range of 1520 nm to 1565 nm. It its embodiment, the fiber is composed of a central core region 100 and a clad 101, and dispersion gradient within range of the wavelength including in the middle a core mode region 105 having a lower refractive index than that of the clad, a core ring region 102 having a refractive index between that of the central core region and that of the clad and a second core mode region 103 having a lower refractive index than that of the clad exists between zero and -1.2 ps/nm -km. The dispersion compensating fiber can be combined to a fiber amplifier in order to form a compensator for reducing an additional loss by it. In an embodiment, the dispersion compensating fiber is a distribution fiber amplifier.
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公开(公告)号：JP2002243967A
公开(公告)日：2002-08-28
申请号：JP2001377871
申请日：2001-12-11
Applicant: CORNING INC
Inventor： ANTOS A JOSEPH , BLANKENSHIP MICHAEL G , HALL DOUGLAS WARREN , MURPHY EDWARD F , SMITH DAVID K
Abstract: PROBLEM TO BE SOLVED: To provide dispersion compensating optical fibers which compensate dispersion in the case where a transmission fiber having zero dispersion in about 1,310 nm are used in a 1,550 nm band, and to provide a transmission system. SOLUTION: The dispersion compensating optical fibers can provide larger dispersion more negative than -20 ps/nm-km and attenuation less than 1 dB/km at wavelengths in the 1,520 to 1,565 nm region. Certain of the dispersion compensating fibers also exhibit a dispersion versus wavelength relationship having a negative slope in the above wavelength region, in order to compensate the dispersion versus wavelength slope of the transmission fiber. An example of the structure includes a core moat region 55 consisting of a central core region 50 and a cladding 51 and having a refractive index lower than that of an intermediate cladding, and a core ring region 52 having a refractive index between those of the central core region and the cladding. The dispersion compensating fiber can be combined with a fiber amplifier to form a compensator for reducing additional loss due to the dispersion compensating fiber. In one embodiment, the dispersion compensating fiber is a distributed fiber amplifier.
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Patent Agency Ranking
公开(公告)号：WO0019255A3
公开(公告)日：2001-12-20
申请号：PCT/US9920057
申请日：1999-08-31
Applicant: CORNING INC , MA DAIPING , SMITH DAVID K
Inventor： MA DAIPING , SMITH DAVID K
CPC classification number: G02B6/03644 , G02B6/02014 , G02B6/02238 , G02B6/02271 , G02B6/0228 , G02B6/0281 , G02B6/0286 , G02B6/03611 , G02B6/03633 , G06T17/20
Abstract: Disclosed is a single mode optical waveguide having a segmented core of at least two segments. The relative refractive index, the index profile and the radial dimensions of the core segments are selected to provide an optical waveguide fiber having properties suitable for a high performance telecommunication system operating in the wavelength window of about 1530 nm to 1570 nm. Embodiments of the invention having two, three and four segments are described to eliminate non-linear effects, such as FWM and SPM, which occur in a high performance, high rate systems, the effective area of the waveguide is made to be greater than about 60 mu m , more preferably greater than 65 mu m , and most preferably greater than 70 mu m . The total dispersion is preferably positive and equal to at least 2 ps/nm-km at 1530 nm. This total dispersion together with a total dispersion slope less than about 0.1 ps/nm -km insures a minimum FWM effect over the wavelength window.
Abstract translation: 公开了具有至少两个段的分段核的单模光波导。 选择芯部段的相对折射率，折射率分布和径向尺寸以提供具有适合于在约1530nm至1570nm的波长窗口中操作的高性能电信系统的性质的光波导光纤。 描述了具有两个，三个和四个段的本发明的实施例以消除出现在高性能，高速率系统中的非线性效应，例如FWM和SPM，使波导的有效面积大于约 60μm2，更优选大于65μm2，最优选大于70μm2。 总色散优选为正，并且在1530nm处等于至少2ps / nm-km。 该总色散与小于约0.1ps / nm 2km的总色散斜率一起确保在波长窗口上具有最小的FWM效应。
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公开(公告)号：WO0019255A9
公开(公告)日：2000-10-12
申请号：PCT/US9920057
申请日：1999-08-31
Applicant: CORNING INC , MA DAIPING , SMITH DAVID K
Inventor： MA DAIPING , SMITH DAVID K
CPC classification number: G02B6/03644 , G02B6/02014 , G02B6/02238 , G02B6/02271 , G02B6/0228 , G02B6/0281 , G02B6/0286 , G02B6/03611 , G02B6/03633 , G06T17/20
Abstract: Disclosed is a single mode optical waveguide having a segmented core of at least two segments. The relative refractive index, the index profile and the radial dimensions of the core segments are selected to provide an optical waveguide fiber having properties suitable for a high performance telecommunication system operating in the wavelength window of about 1530 nm to 1570 nm. Embodiments of the invention having two, three and four segments are described. To eliminate non-linear effects, such as FWM and SPM, which occur in a high performance, high rate systems, the effective area of the waveguide is made to be greater than about 60 mu m , more preferably greater than 65 mu m , and most preferably greater than 70 mu m . The total dispersion is preferably positive and equal to at least 2 ps/nm-km at 1530 nm. This total dispersion together with a total dispersion slope less than about 0.1 ps/nm -km insures a minimum FWM effect over the wavelength window.
Abstract translation: 公开了具有至少两段的分段芯的单模光波导。 选择芯段的相对折射率，折射率分布和径向尺寸以提供具有适用于在大约1530nm至1570nm的波长窗口中操作的高性能电信系统的性质的光波导纤维。 描述了具有两个，三个和四个段的本发明的实施例。 为了消除在高性能，高速率系统中出现的非线性效应，例如FWM和SPM，使波导的有效面积大于约60平方米，更优选大于65平方米 m 2，最优选大于70μm2。 总色散优选为正值，并且在1530nm处等于至少2ps / nm-km。 该总色散与小于约0.1ps / nm 2 -km的总色散斜率确保了波长窗口上的最小FWM效应。
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公开(公告)号：AT334411T
公开(公告)日：2006-08-15
申请号：AT98953601
申请日：1998-10-15
Applicant: CORNING INC
Inventor： LI MING-JUN , MA DAIPING , SMITH DAVID K , LIU YANMING
Abstract: Disclosed is a single made optical waveguide fiber having a segmented core design. In particular, the core comprises three segments, each having characteristic dimensions and refractive index profile. By proper choice of index profile in each segment, a waveguide fiber is made which has a mode field diameter of about 9.5, low, positive total dispersion over the operating window 1530 nm to 1565 nm as well as effective area greater than 60 mum 2 .
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公开(公告)号：AU760861B2
公开(公告)日：2003-05-22
申请号：AU2142500
申请日：1999-08-31
Applicant: CORNING INC
Inventor： MA DAIPING , SMITH DAVID K
Abstract: Disclosed is a single mode optical waveguide having a segmented core of at least two segments. The relative refractive index, the index profile and the radial dimensions of the core segments are selected to provide an optical waveguide fiber having properties suitable for a high performance telecommunication system operating in the wavelength window of about 1530 nm to 1570 nm. Embodiments of the invention having two, three and four segments are described.
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公开(公告)号：BR0012719A
公开(公告)日：2002-04-09
申请号：BR0012719
申请日：2000-06-20
Applicant: CORNING INC
Inventor： MITCHELL BRIAN E , SMITH DAVID K
Abstract: The invention is directed to a single mode optical waveguide fiber profile that provides relatively large effective area while limiting macrobend loss. The large effective area results from configuring the core of the waveguide fiber to shift propagated light power away from the waveguide center. Macrobend loss, as measured by pin array or 20 mm mandrel testing, is maintained low by means of a power-limiting index depression surrounding the central core region of the waveguide. In addition, low attenuation is achieved and cut off wavelength is controlled to provide a telecommunications operating window in the wavelength range of about 1250 nm to 1700 nm.
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