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公开(公告)号：JP2001066474A
公开(公告)日：2001-03-16
申请号：JP2000218404
申请日：2000-07-19
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KALISH DAVID , NEVEUX PAUL EMILIEN JR , RITGER ALBERT JOHN , TAYLOR CARL RAYMOND , TURNIPSEED JOHN MICHAEL
Abstract: PROBLEM TO BE SOLVED: To obtain a novel optical energy transmission medium improved in mode coupling. SOLUTION: The optical energy transmission medium 10, such as an optical fiber, contains the plural particles formed in >=1 layer of coating layer enclosing a clad region and/or >=1 layer of buffer region layer 16 enclosing the coating layer. As a result, advantageous mode coupling is accelerated and consequently, the band-width potential lowered in dispersion is improved. This process for producing the optical energy transmission medium 10 consists in forming >=1 layer of the coating region layer and/or >=1 layer of the buffer region layer containing the particles in such a manner that the particles like those of fumed silica are maintained in the optical energy transmission medium and that the perturbation controlled along the optical fiber to enhance the mode coupling up to the extent of improving the band weight of the optical fiber is formed.
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公开(公告)号：JPH11171575A
公开(公告)日：1999-06-29
申请号：JP17197298
申请日：1998-06-19
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHANG KAI HUEI , KALISH DAVID , MILLER THOMAS J , PEARSALL MICHAEL L
IPC: G02B6/00 , C03B37/012 , C03B37/014 , C03C25/10 , C03C25/12 , G02B6/02 , G02B6/036
Abstract: PROBLEM TO BE SOLVED: To provide an optical fiber having low optical transmission loss in the wavelength region of 1,200 to 1,600 nm and particularly at 1,385 nm, in the correlation of optical transmission loss with wavelengths of transmitted light and also to provide the production of the optical fiber. SOLUTION: This production comprises: forming a core rod 20 by a vapor- phase axial deposition method so as to have a (deposited clad)/core ratio (D/d ratio) of
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公开(公告)号：JP2001066475A
公开(公告)日：2001-03-16
申请号：JP2000218405
申请日：2000-07-19
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KALISH DAVID , NEVEUX PAUL EMILIEN JR , RITGER ALBERT JOHN , TAYLOR CARL RAYMOND , TURNIPSEED JOHN MICHAEL
Abstract: PROBLEM TO BE SOLVED: To obtain a novel optical energy transmission medium improved in mode coupling. SOLUTION: The optical energy transmission medium 10, such as an optical fiber, contains the foam 26 formed in this medium 10 in such a manner that the microbending of the medium 10 is induced, the advantageous mode coupling is thereby accelerated and consequently dispersion is lessened and the band-width potential is improved. The foam 26 is formed in >=1 layer of buffer region layer 22 and/or at the boundary between a coating region 16 and the buffer region 22. The process for producing the optical energy transmission medium consists controllably in forming >=1 layer of the buffer region layer around a coated optical fiber in such a form that a desired amount of the foam 26 is formed and held in >=1 layer of the buffer region layer 22 and/or the boundary between the coating region 16 and the buffer region 22. The foam 26 generates the prescribed perturbation to enhance the mode coupling to the extent that the band-width of the optical fiber is improved. The size and amount of the foam 26 are controlled by the moisture content in the coating layer.
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公开(公告)号：JP2000244404A
公开(公告)日：2000-09-08
申请号：JP2000043229
申请日：2000-02-21
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHRAPLYVY ANDREW ROMAN , EICHENBAUM BERNARD RAYMOND , EMERY GARY PATRICK , HABER JANICE BILECKY , KALISH DAVID , RAYMOND BRADFIELD
Abstract: PROBLEM TO BE SOLVED: To provide an optical transmission system that adopts a signal mode fiber system to avoid interference between a wavelength division multiplex WDM signal and an analog television TV signal. SOLUTION: This wavelength division multiplex system has a 1st multiplexer 112 that connects a plurality of digital information channels to a transmission path and the transmission path including an optical fiber 130 whose zero dispersion wavelength λ0 is 1310 nm and whose length exceeds a span to 10 km. The loss of the optical fiber at 1385 nm is smaller than the loss at 1310 nm, and color element dispersion at a 1.4 μm wavelength band is within a range of 1.5-8.0 ps/nm.km, and the 1st multiplexer 112 gives three or more channels of wavelength division multiplex signals within the 1.4 μm wavelength band to the transmission path.
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公开(公告)号：DE69900958D1
公开(公告)日：2002-04-11
申请号：DE69900958
申请日：1999-07-06
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GLODIS PAUL FRANCIS , GRIDLEY CHARLES FRANCIS , JABLONOWSKI DONALD PAUL , KALISH DAVID , WALKER KENNETH LEE
IPC: C03C3/04 , C03B37/012 , C03B37/018
Abstract: A large optical preform Ä303Ü is made by a modified chemical vapor deposition (MCVD) process by depositing successive layers of core and cladding materials onto the inside surface of a rotating glass tube Ä33Ü having a hydroxyl ion (OH ) level that is less than 0.5 parts per million (ppm) by weight. The tube is then collapsed inwardly to form a core rod Ä301Ü in which the deposited core material Ä31Ü has a diameter that is greater than about 5 millimeters and the deposited cladding material Ä32Ü has an outside diameter that is less than about 15 millimeters. Optionally a machine-vision system Ä140,150,160Ü monitors and controls the diameter of the glass tube by regulating the pressure within the tube; moreover, the machine-vision system monitors and controls the straightness of the tube by varying its rotational speed according to angular position. After the core rod Ä301Ü is formed, it may be plasma etched to remove contaminants, it is overclad with two glass jackets Ä34,35Ü having a hydroxyl ion (OH ) level that is less than 1.0 ppm by weight thereby creating a large preform Ä303Ü from which about 400 kilometers of singlemode optical fiber can be drawn per meter of length of preform.
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Patent Agency Ranking
公开(公告)号：DE69943364D1
公开(公告)日：2011-06-01
申请号：DE69943364
申请日：1999-02-09
Applicant: LUCENT TECHNOLOGIES INC
Inventor： JUDY ARTHUR F , KALISH DAVID , KUMMER RAYMOND BRADFIELD , PECKHAM DAVID WAYNE , REED WILLIAM ALFRED
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公开(公告)号：DE60009974T2
公开(公告)日：2005-05-04
申请号：DE60009974
申请日：2000-02-09
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHRAPLYVY ANDREW ROMAN , EICHENBAUM BERNARD RAYMOND , EMERY GARY PATRICK , HABER JANICE BILECKY , KALISH DAVID , KUMMER RAYMOND BRADFIELD
Abstract: A high-capacity optical fiber network Ä100, 200Ü includes wavelength-division multiplexing (WDM) within the 1.4 micron ( mu m) wavelength region (i.e., 1335-1435 nm). Such a system includes optical fiber Ä130Ü whose peak loss in the 1.4 mu m region is less than its loss at 1310 nm. The optical fiber has a zero dispersion wavelength ( lambda 0) at about 1310 nm, and linear dispersion between about 1.5 and 8.0 ps/nm-km within the 1.4 mu m region. At least three WDM channels operate at 10 Gb/s in the 1.4 mu m wavelength region and have a channel separation of 100 GHz. In one illustrative embodiment of the invention, a broadcast television channel, having amplitude modulated vestigial sideband modulation, simultaneously operates in the 1.3 mu m region (i.e., 1285-1335 nm) and/or the 1.55 mu m region (i.e., 1500-1600 nm). In another embodiment of the invention, 16 digital data channels are multiplexed together in the 1.55 mu m region, each channel operating at about 2.5 Gb/s. Raman amplifiers Ä103, 113Ü are used for amplification in the 1.3 mu m and the 1.4 mu m wavelength regions, whereas an Erbium amplifier Ä123Ü is used for amplification in the 1.55 mu m wavelength region.
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公开(公告)号：CA2296945C
公开(公告)日：2003-10-28
申请号：CA2296945
申请日：2000-01-25
Applicant: LUCENT TECHNOLOGIES INC
Inventor： HABER JANICE BILECKY , EMERY GARY PATRICK , EICHENBAUM BERNARD RAYMOND , KALISH DAVID , CHRAPLYVY ANDREW ROMAN , KUMMER RAYMOND BRADFIELD
Abstract: A high-capacity optical fiber network [100, 200] includes wavelength-divisi on multiplexing (WDM) within the 1.4 micron (.mu.m) wavelength region (i.e., 13 35- 1435 nm). Such a system includes optical fiber [130] whose peak loss in the 1.4 .mu.m region is less than its loss at 1310 nm. The optical fiber has a zero dispersion wavelength (.lambda.0) at about 1310 nm, and linear dispersion between about 1.5 and 8. 0 ps/nm-km within the 1.4 .mu.m region. At least three WDM channels operate at 10 Gb/s in the 1.4 .mu.m wavelength region and have a channel separation of 100 GHz. In one illustrative embodiment of the invention, a broadcast television channel, having amplitud e modulated vestigial sideband modulation, simultaneously operates in the 1.3 .mu.m region (i.e., 1285-1335 nm) and/or the 1.55 .mu.m region (i.e., 1500-1600 nm ). In another embodiment of the invention, 16 digital data channels are multiplexe d together in the 1.55 .mu.m region, each channel operating at about 2.5 Gb/s. Raman amplifiers [103, 113] are used for amplification in the 1.3 .mu.m and the 1. 4 .mu.m wavelength regions, whereas an Erbium amplifier [123] is used for amplification in the 1.55 .mu.m wavelength region.
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公开(公告)号：DE69800981T2
公开(公告)日：2002-04-04
申请号：DE69800981
申请日：1998-06-09
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHANG KAI HUEI , MILLER THOMAS JOHN , KALISH DAVID , PEARSALL MICHAEL L
IPC: G02B6/00 , C03B37/012 , C03B37/014 , C03C25/10 , C03C25/12 , G02B6/02 , G02B6/036 , G02B6/16
Abstract: A singlemode optical fiber Ä700Ü having very low loss at 1385 nm, and a practical method for making same are disclosed. A core rod Ä20Ü is fabricated using vapor axial deposition to have a deposited cladding/core ratio (D/d) that is less than 7.5. The core rod is dehydrated in a chlorine- or fluorine-containing atmosphere at about 1200 DEG C to reduce the amount of OH present to less than 0.8 parts per billion by weight, and then consolidated in a helium atmosphere at about 1500 DEG C to convert the porous soot body into a glass. The consolidated core rod is elongated using an oxygen-hydrogen torch that creates a layer of OH ions on the surface of the rod that are largely removed by plasma etching. Finally, the core rod is installed in a glass tube Ä40Ü having a suitably low OH content. Thereafter, the tube is collapsed onto the rod to create a preform Ä60Ü. Conventional methods are employed for drawing an optical fiber from the preform and applying one or more protective coatings Ä75, 76Ü. The disclosed method is suitable for commercial production of low-OH fiber. Significantly, the fiber's loss at 1385 nm is reduced to a level that is less than its loss at 1310 nm, thereby rendering the entire wavelength region 1200 - 1600 nm suitable for optical transmission. In particular, wave-division-multiplex systems are now available to transmit optical signals over distances greater than 10 km in the wavelength region between 1360 nm and 1430 nm.
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公开(公告)号：DE69800981D1
公开(公告)日：2001-08-02
申请号：DE69800981
申请日：1998-06-09
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHANG KAI HUEI , MILLER THOMAS JOHN , KALISH DAVID , PEARSALL MICHAEL L
IPC: G02B6/00 , C03B37/012 , C03B37/014 , C03C25/10 , C03C25/12 , G02B6/02 , G02B6/036 , G02B6/16
Abstract: A singlemode optical fiber Ä700Ü having very low loss at 1385 nm, and a practical method for making same are disclosed. A core rod Ä20Ü is fabricated using vapor axial deposition to have a deposited cladding/core ratio (D/d) that is less than 7.5. The core rod is dehydrated in a chlorine- or fluorine-containing atmosphere at about 1200 DEG C to reduce the amount of OH present to less than 0.8 parts per billion by weight, and then consolidated in a helium atmosphere at about 1500 DEG C to convert the porous soot body into a glass. The consolidated core rod is elongated using an oxygen-hydrogen torch that creates a layer of OH ions on the surface of the rod that are largely removed by plasma etching. Finally, the core rod is installed in a glass tube Ä40Ü having a suitably low OH content. Thereafter, the tube is collapsed onto the rod to create a preform Ä60Ü. Conventional methods are employed for drawing an optical fiber from the preform and applying one or more protective coatings Ä75, 76Ü. The disclosed method is suitable for commercial production of low-OH fiber. Significantly, the fiber's loss at 1385 nm is reduced to a level that is less than its loss at 1310 nm, thereby rendering the entire wavelength region 1200 - 1600 nm suitable for optical transmission. In particular, wave-division-multiplex systems are now available to transmit optical signals over distances greater than 10 km in the wavelength region between 1360 nm and 1430 nm.
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