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公开(公告)号：US6044191A
公开(公告)日：2000-03-28
申请号：US185472
申请日：1998-11-03
申请人： George E. Berkey , Venkata A. Bhagavatula , Peter C. Jones , Donald B. Keck , Yanming Liu , Robert A. Modavis , Alan J. Morrow , Mark A. Newhouse , Daniel A. Nolan
发明人： George E. Berkey , Venkata A. Bhagavatula , Peter C. Jones , Donald B. Keck , Yanming Liu , Robert A. Modavis , Alan J. Morrow , Mark A. Newhouse , Daniel A. Nolan
IPC分类号： G02B6/00 , C03B37/012 , C03B37/014 , C03B37/018 , C03B37/02 , C03B37/027 , G02B6/02 , G02B6/028 , G02B6/036
CPC分类号： G02B6/0281 , C03B37/01211 , C03B37/01228 , C03B37/0124 , C03B37/01254 , C03B37/01257 , C03B37/01413 , C03B37/01466 , C03B37/0148 , C03B37/01493 , C03B37/027 , C03C25/6226 , G02B6/02247 , C03B2203/18 , C03B2203/20 , C03B2203/24 , C03B2203/36 , C03C2218/31
摘要： A single-mode optical waveguide fiber designed to limit power penalty due to four wave mixing and a method of making the waveguide is disclosed. Variations in properties, e.g., radius or refractive index, of the waveguide fiber core provide a total dispersion which varies along the length of the waveguide. The algebraic sum of products of length times total dispersion is controlled to a pre-selected value for each waveguide fiber which makes up a system link Proper choice of total dispersion variation magnitude and sub-length results in a system link wherein a signal travels only short distances in waveguide portions having total dispersion near zero. However, the variation of the total dispersion provides a system link which has a pre-selected dispersive effect on the signal over a selected wavelength range. The dispersive effect on the signal can be chosen to be essentially zero. A number of techniques for fabricating DM fiber are also disclosed.
摘要翻译： 公开了一种设计用于限制由于四波混频引起的功率损失的单模光纤光纤和制造波导的方法。 波导纤维芯的性质，例如半径或折射率的变化提供沿波导长度变化的总色散。 将长度乘以总色散的乘积的代数和控制为构成系统链路的每个波导光纤的预选值。总体色散变化幅度和子长度的正确选择导致系统链路，其中信号仅传播短 具有接近零的总色散的波导部分的距离。 然而，总色散的变化提供了对所选波长范围上的信号具有预先选择的色散效应的系统链路。 对信号的色散效应可以选择为基本为零。 还公开了用于制造DM纤维的许多技术。
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公开(公告)号：US06760525B2
公开(公告)日：2004-07-06
申请号：US10224242
申请日：2002-08-19
IPC分类号： G02B600
CPC分类号： G02B6/03677 , C03B37/01211 , C03B37/01413 , C03B37/01807 , C03B2203/18 , C03B2203/36 , G02B6/02009 , G02B6/02242 , G02B6/02247 , G02B6/02271 , G02B6/0228 , G02B6/03611 , G02B6/03644
摘要： Disclosed is a dispersion controlled optical waveguide fiber, and telecommunication systems using such a waveguide fiber, in which the end to end total dispersion and total dispersion slope is controlled by varying the refractive index profile along the fiber length. The waveguide fiber includes length portions each of which is characterized by total dispersion having a magnitude and sign and total dispersion slope having a magnitude and sign. The magnitudes and signs of total dispersion and total dispersion slope of respective length portions are chosen to provide for the optical waveguide fiber a desired end to end total dispersion and total dispersion slope. An advantage is achieved in the present invention by designing the refractive index profiles of the length portions to have total dispersion and total dispersion slope of opposite sign.
摘要翻译： 公开了一种色散控制光波导光纤和使用这种波导光纤的电信系统，其中通过沿光纤长度改变折射率分布来控制端到端的总色散和总色散斜率。 波导纤维包括长度部分，每个部分的特征在于具有幅度和符号的总色散以及具有幅度和符号的总色散斜率。 选择各个长度部分的总色散和总色散斜率的大小和符号，以使光波导光纤具有期望的端到端总色散和总色散斜率。 通过设计长度部分的折射率分布以具有相反符号的总色散和总色散斜率，在本发明中实现了一个优点。
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公开(公告)号：US06173588B1
公开(公告)日：2001-01-16
申请号：US09300894
申请日：1999-04-28
IPC分类号： C03B37027
CPC分类号： G02B6/02247 , C03B37/01211 , C03B37/01234 , C03B37/0124 , C03B37/01248 , C03B37/01413 , C03B37/01466 , C03B37/0148 , C03B37/01493 , C03B37/027 , C03B2203/18 , C03B2203/20 , C03B2203/22 , C03B2203/24 , C03B2203/36 , G02B6/0281 , G02B6/03627 , G02B6/03633 , G02B6/03644 , G02B6/03661 , G02B6/03688
摘要： An optical fiber having optical characteristics that vary along its length is made by assembling a plurality of cylindrical glass or soot tablets into or along a glass tablet alignment device, then fused into monolithic assembly. If desired, additional glass may be applied to the assembly before or after the fusing step. A vacuum is preferably applied during the fusing step. Each tablet preferably contains a core region, and it optionally contains a layer of cladding glass. Adjacent tablets are capable of forming optical fiber sections having different optical properties. Prior to consolidating the glass particles, chlorine preferably flows through or around the tablets and alignment device. The resultant draw blank can be drawn into a low loss optical fiber having short transition regions between adjacent areas of fiber. This method is particularly useful for making dispersion managed single-mode optical fibers.
摘要翻译： 具有沿其长度变化的光学特性的光纤通过将多个圆柱形玻璃或烟灰片组装到玻璃片对齐装置中或沿着玻璃片对齐装置而制成，然后熔合成单片组件。 如果需要，可以在熔融步骤之前或之后向组件施加另外的玻璃。 在定影步骤期间优选施加真空。 每个片剂优选地包含核心区域，并且其任选地包含一层包层玻璃。 相邻的片剂能够形成具有不同光学性质的光纤部分。 在固化玻璃颗粒之前，氯优选流过片剂和对准装置中或周围。 所得到的拉伸坯料可以被拉入具有纤维相邻区域之间的短过渡区域的低损耗光纤。 该方法对于制造分散管理单模光纤特别有用。
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公开(公告)号：US5894537A
公开(公告)日：1999-04-13
申请号：US584868
申请日：1996-01-11
申请人： George E. Berkey , Venkata A. Bhagavatula , Peter C. Jones , Donald B. Keck , Yanming Liu , Robert A. Modavis , Alan J. Morrow , Mark A. Newhouse , Daniel A. Nolan
发明人： George E. Berkey , Venkata A. Bhagavatula , Peter C. Jones , Donald B. Keck , Yanming Liu , Robert A. Modavis , Alan J. Morrow , Mark A. Newhouse , Daniel A. Nolan
IPC分类号： C03B37/012 , C03B37/014 , C03B37/027 , G02B6/10
CPC分类号： G02B6/02247 , C03B37/01211 , C03B37/01228 , C03B37/0124 , C03B37/01248 , C03B37/01257 , C03B37/01413 , C03B37/01466 , C03B37/0148 , C03B37/01493 , C03B37/027 , G02B6/03611 , G02B6/03644 , C03B2203/18 , C03B2203/20 , C03B2203/22 , C03B2203/24 , C03B2203/36
摘要： A single-mode optical waveguide fiber designed to limit power penalty due to four wave mixing and a method of making the waveguide is disclosed. Variations in properties, e.g., radius or refractive index, of the waveguide fiber core provide a total dispersion which varies along the length of the waveguide. The algebraic sum of products of length times total dispersion is controlled to a pre-selected value for each waveguide fiber which makes up a system link. Proper choice of total dispersion variation magnitude and sub-length results in a system link wherein a signal travels only short distances in waveguide portions having total dispersion near zero. However, the variation of the total dispersion provides a system link which has a pre-selected dispersive effect on the signal over a selected wavelength range. The dispersive effect on the signal can be chosen to be essentially zero. A number of techniques for fabricating DM fiber are also disclosed.
摘要翻译： 公开了一种设计用于限制由于四波混频引起的功率损失的单模光纤光纤和制造波导的方法。 波导纤维芯的性质，例如半径或折射率的变化提供沿波导长度变化的总色散。 将长度乘以总色散的乘积的代数和控制为构成系统链路的每个波导光纤的预选值。 总体色散变化幅度和子长度的适当选择导致系统链路，其中信号在具有接近零的总色散的波导部分中仅行进短距离。 然而，总色散的变化提供了对所选波长范围上的信号具有预选色散效应的系统链路。 对信号的色散效应可以选择为基本为零。 还公开了用于制造DM纤维的许多技术。
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公开(公告)号：US5152818A
公开(公告)日：1992-10-06
申请号：US612103
申请日：1990-11-09
IPC分类号： G02B6/00 , C03B37/012 , C03B37/014 , C03B37/018 , C03B37/02 , C03C15/00 , C03C25/68 , G02B6/024
CPC分类号： C03B37/01234 , C03B37/01217 , C03B37/01228 , C03B37/0124 , C03B37/01248 , C03B37/0126 , C03B37/01413 , C03B37/01446 , C03B37/01486 , C03C15/00 , C03C25/68 , C03B2201/10 , C03B2203/31 , C03B2207/06 , C03B2207/14 , C03B2207/40
摘要： 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 perform 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：US07076141B2
公开(公告)日：2006-07-11
申请号：US11123920
申请日：2005-05-06
CPC分类号： C03C25/607 , C03B37/01446 , C03B37/0146 , C03B37/01486 , C03B2201/075 , C03B2201/22 , C03B2201/31 , C03C3/06 , C03C13/045 , C03C13/047 , C03C2201/21 , C03C2201/22 , C03C2203/54 , G02B6/02
摘要： Optical waveguide fiber having low water peak as well as optical waveguide fiber preforms and methods of making optical waveguide fiber preforms from which low water peak and/or low hydrogen aged attenuation optical waveguide fibers are formed, including optical waveguide fiber and preforms made via OVD. The fibers may be hydrogen resistant, i.e. exhibit low hydrogen aged attenuation. A low water peak, hydrogen resistant optical waveguide fiber is disclosed which exhibits an optical attenuation at a wavelength of about 1383 nm which is less than or equal to an optical attenuation exhibited at a wavelength of about 1310 nm.
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公开(公告)号：US06760527B2
公开(公告)日：2004-07-06
申请号：US10449121
申请日：2003-05-29
IPC分类号： G02B602
CPC分类号： G02B6/02266 , C03B2201/02 , C03B2201/31 , C03B2203/24 , C03B2203/36 , C03C13/045 , C03C25/1065 , G02B6/02019 , G02B6/02285 , G02B6/02395 , G02B6/0281 , G02B6/03611
摘要： An optical waveguide fiber having a relatively large effective area which exhibits low attenuation, low PMD and low microbending sensitivity. A step-index refractive index profile is advantageously used.
摘要翻译： 具有相对较大有效面积的光波导光纤，其具有低衰减，低PMD和低微弯灵敏度。 有利地使用阶梯折射率折射率分布。
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公开(公告)号：US06611647B2
公开(公告)日：2003-08-26
申请号：US09996632
申请日：2001-11-28
IPC分类号： G02B616
CPC分类号： G02B6/02266 , C03B2201/02 , C03B2201/31 , C03B2203/24 , C03B2203/36 , C03C13/045 , C03C25/1065 , G02B6/02019 , G02B6/02285 , G02B6/02395 , G02B6/0281 , G02B6/03611
摘要： An optical waveguide fiber having a relatively large effective area which exhibits low attenuation, low PMD and low microbending sensitivity. A step-index refractive index profile is advantageously used.
摘要翻译： 具有相对较大有效面积的光波导光纤，其具有低衰减，低PMD和低微弯灵敏度。 有利地使用阶梯折射率折射率分布。
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公开(公告)号：US06418757B1
公开(公告)日：2002-07-16
申请号：US09318316
申请日：1999-05-25
申请人： George E. Berkey , Polly W. Chu , Carl E. Crossland , Lisa A. Moore , Gang Qi , John W. Solosky
发明人： George E. Berkey , Polly W. Chu , Carl E. Crossland , Lisa A. Moore , Gang Qi , John W. Solosky
IPC分类号： C03B3702
CPC分类号： C03B37/0124 , C03B2201/31 , C03B2201/32
摘要： A method of making a glass article such as an optical waveguide preform is disclosed. The method comprises drawing a rod in at least two steps. In the first step an elongated, consolidated preform having an aperture therethrough is drawn to a reduced diameter preform. The second step involves drawing the reduced diameter preform into a rod, preferably at a lower temperature than the first step. The method substantially reduces the formation of inclusions in the glass article during drawing.
摘要翻译： 公开了制造玻璃制品如光波导预制件的方法。 该方法包括在至少两个步骤中拉杆。 在第一步骤中，将具有穿过其中的孔的细长的，固结的预成型件拉制成直径缩径的预制件。 第二步涉及将直径缩小的预成型件拉制成棒，优选地在比第一步骤低的温度下。 该方法基本上减少拉制过程中玻璃制品中夹杂物的形成。
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公开(公告)号：US5917109A
公开(公告)日：1999-06-29
申请号：US795687
申请日：1997-02-05
申请人： George E. Berkey
发明人： George E. Berkey
IPC分类号： G02B6/00 , C03B37/012 , C03B37/014 , C03B37/018 , G02B6/036 , C03B37/027
CPC分类号： G02B6/03627 , C03B37/01211 , C03B37/01245 , C03B37/01248 , C03B37/01453 , C03B37/01473 , C03B37/01486 , C03B37/01493 , C03B37/01869 , C03B37/01884 , G02B6/03644 , C03B2201/10 , C03B2201/12 , C03B2201/14 , C03B2201/31 , C03B2203/22 , C03B2203/36 , G02B6/02261 , G02B6/0281
摘要： Disclosed is a method of making an optical fiber preform having at least one annular region of depressed refractive index. A tube of silica doped with fluorine and/or boron is overclad with silica soot. A core rod is inserted into the overclad tube and the resultant assembly is heated while chlorine flows between the tube and the core rod to clean the adjacent surfaces. When the soot sinters, the tube collapses onto and fuses to the rod. The resultant tubular structure is formed into an optical fiber which exhibits low attenuation as a result of the low seed count at the interface between the inner core and the region that is doped with fluorine and/or boron.
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