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1. 发明授权

US6131415A Method of making a fiber having low loss at 1385 nm by cladding a VAD preform with a D/d<7.5 失效
标题翻译：通过以D / d <7.5包覆VAD预制件来制造在1385nm具有低损耗的纤维的方法
公开(公告)号：US6131415A
公开(公告)日：2000-10-17
申请号：US879348
申请日：1997-06-20
申请人： Kai Huei Chang , David Kalish , Thomas John Miller , Michael L. Pearsall
发明人： Kai Huei Chang , David Kalish , Thomas John Miller , Michael L. Pearsall
IPC分类号： G02B6/00 , C03B37/012 , C03B37/014 , C03C25/10 , C03C25/12 , G02B6/02 , G02B6/036 , C03B37/027
CPC分类号： C03B37/01211 , C03B37/01228 , C03B37/01237 , C03B37/01248 , C03B37/01446 , C03C25/106 , C03C25/12 , C03B2201/04 , C03B2201/075 , C03B2201/12 , C03B2201/31 , C03B2203/24 , G02B6/02 , Y02P40/57
摘要： A singlemode optical fiber 700 having very low loss at 1385 nm, and a practical method for making same are disclosed. A core rod 20 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.degree. 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.degree. 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 40 having a suitably low OH content. Thereafter, the tube is collapsed onto the rod to create a preform 60. Conventional methods are employed for drawing an optical fiber from the preform and applying one or more protective coatings 75, 76. 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.
摘要翻译：公开了在1385nm具有非常低的损耗的单模光纤700及其制造方法。使用蒸汽轴向沉积制造芯棒20以具有小于7.5的沉积包层/芯部比（D / d）。芯棒在约1200℃的含氯或含氟气氛中脱水，以将OH的存在量减少到小于0.8重量％，然后在约1500℃的氦气氛中固结。将多孔烟炱体转化为玻璃。使用氧 - 氢焰炬拉长固结的芯棒，其在杆的表面上产生通过等离子体蚀刻大量去除的OH离子层。最后，将芯棒安装在具有适当低的OH含量的玻璃管40中。此后，管被折叠到杆上以产生预制件60.采用常规方法从预成型件拉制光纤并施加一个或多个保护涂层75,76。所公开的方法适用于低OH的商业生产纤维。值得注意的是，1385nm处的光纤损耗降低到1310nm以下的损耗，从而使整个波长范围为1200-1600nm，适合于光传输。特别地，波分复用系统现在可用于在1360nm和1430nm之间的波长区域中发射超过10km的距离的光信号。

2. 发明授权

US5850497A Method for stretching refractory bodies 失效
$Method for stretching refractory bodies$
标题翻译：耐火材料拉伸方法
公开(公告)号：US5850497A
公开(公告)日：1998-12-15
申请号：US834264
申请日：1997-04-15
申请人： James W. Fleming , Michael L. Pearsall
发明人： James W. Fleming , Michael L. Pearsall
IPC分类号： C03B23/047 , C03B37/012 , G02B6/02
CPC分类号： C03B37/0124 , C03B23/047 , G02B6/02
摘要： A refractory body having reduced optical attenuation, and a method for making same, is disclosed. A refractory body is exposed to a high-temperature oxygen-containing plasma. A drawing force is applied to the body, elongating the body to form a rod of reduced diameter. The source of the plasma is moved in a direction opposite to the applied drawing force, and, preferably, has a reciprocating component of motion to spread the zone of heating. The method is particularly useful in manufacturing optical fiber core rods having low optical attenuation.
摘要翻译：公开了一种减少光衰减的耐火材料体及其制造方法。耐火体暴露于高温含氧等离子体。向身体施加拉力，拉长身体以形成直径减小的杆。等离子体源沿与施加的拉力相反的方向移动，并且优选具有运动的往复运动分量以扩展加热区域。该方法在制造光衰减低的光纤芯棒时特别有用。

3. 发明授权

US4900126A Bonded array of transmission media 失效
标题翻译：传输介质的接合阵列
公开(公告)号：US4900126A
公开(公告)日：1990-02-13
申请号：US213876
申请日：1988-06-30
申请人： Kenneth W. Jackson , Gregory A. Lochkovic , Parbhubhai D. Patel , Michael L. Pearsall , James R. Petisce
发明人： Kenneth W. Jackson , Gregory A. Lochkovic , Parbhubhai D. Patel , Michael L. Pearsall , James R. Petisce
IPC分类号： G02B6/08 , G02B6/04 , G02B6/44
CPC分类号： G02B6/4416 , G02B6/04 , G02B6/4401 , G02B6/4403 , G02B6/4404 , G02B6/4411 , G02B6/4482 , G02B6/4495
摘要： A bonded optical fiber array (20) includes a parallel coplanar array of longitudinally extending contacting optical fibers (22--22). Each optical fiber is enclosed in inner and outer layers of coating materials and is provided with a color identifier. The inner layer is comprised of a UV curable bonding material having a modulus in the range of about 1 M Pa. For mechanical protection, the outer layer is a UV curable bonding material having a modulus in the range of about 1 GPa. When the optical fibers are disposed in the parallel array, interstices are created between the fibers and between the fibers and an envelope which is spaced no further than about 25 .mu.m at its closest point to each fiber. A UV curable matrix bonding material which has a modulus having a value less than that of the outer coating layer on the fiber and more than that of the inner coating layer fills the interstices, extends to the peripheral line which defines the envelope and bonds together the optical fibers. The modulus of the matrix material and the bond of the matrix material to the color identifier on the optical fibers is such that interfiber and interribbon movement is allowed. Also, accessing of the individual fibers is allowed upon the application of peeling forces by a craftsperson without the need for complex tools and without obfuscating the color identifier.

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