专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

EP1439150B1 Method for producing twisted optical fiber with reduced polarization mode dispersion 失效
标题翻译：一种制造绞合光纤的方法，具有减少的偏振模色散
公开(公告)号：EP1439150B1
公开(公告)日：2007-02-14
申请号：EP04250119.7
申请日：2004-01-12
申请人： Sterlite Optical Technologies Ltd
发明人： Mohanty, Sangeeta Optical Technologies Limited , Sridhar, Nacham Optical Technologies Limited , Sinha, Salaj Optical Technologies Limited , Gulati, Nitesh Optical Technologies Limited , Das, Sthitadhi Optical Technologies Limited
IPC分类号： C03B37/027 , C03B37/03
CPC分类号： C03B37/032 , C03B37/02745 , C03B2203/19 , C03B2203/20 , C03B2203/36 , C03B2205/06 , C03B2205/42 , G02B6/02285

2. 发明公开

EP1281988A3 Single mode optical fiber as well as method and apparatus for its manufacture 审中-公开
标题翻译：单模光纤以及方法和装置及其生产
公开(公告)号：EP1281988A3
公开(公告)日：2004-05-26
申请号：EP02253750.0
申请日：2002-05-29
申请人： THE FURUKAWA ELECTRIC CO., LTD.
发明人： Hideya, Moridaira, , Kazuhico, Kurusu, , Yoshihiro, Inoue,
IPC分类号： G02B6/16 , C03B37/027 , C03B37/029 , C03B37/014
CPC分类号： G02B6/03666 , C03B37/01446 , C03B37/027 , C03B37/02718 , C03B37/02772 , C03B37/029 , C03B2201/12 , C03B2201/20 , C03B2201/31 , C03B2203/24 , C03B2205/42 , C03B2205/45 , C03B2205/47 , C03B2205/56 , C03B2205/83 , C03B2205/90 , C03C13/04 , G02B6/03611 , G02B6/03627 , G02B6/03633 , G02B6/03644 , Y02P40/57
摘要： In a single mode optical fiber formed of a silica-based glass and including a glass part having a central core (11) and a cladding region (12), the density of non bridging oxygen hole center in the glass part is not higher than 1.0 × 10 14 spins/g in terms of the spin density measured by an electron spin resonance method. Denterium may be diffused into the glass part, made by a flame hydrolysis process. The preform is drawn to a fibre and cooled at a specified cooling rate and cooled using an apparatus adapted for such cooling.

3. 发明公开

EP0698582A3 Method of fabricating dispersion compensation fiber 失效
标题翻译：制造色散补偿光纤的方法
公开(公告)号：EP0698582A3
公开(公告)日：1996-11-13
申请号：EP95113381.8
申请日：1995-08-25
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： Onishi, Masashi, c/o Yokohama Works , Amamiya, Koji, c/o Yokohama Works , Fukuda, Chie, c/o Yokohama Works , Kanamori, Hiroo, c/o Yokohama Works
IPC分类号： C03B37/027 , C03B37/012 , C03C13/04 , G02B6/16 , H04B10/18
CPC分类号： G02B6/02261 , C03B37/02745 , C03B2203/20 , C03B2203/36 , C03B2205/06 , C03B2205/42 , C03C13/045 , G02B6/02285 , G02B6/03611 , G02B6/0365 , G02B6/03666
摘要： In a method of fabricating DCF, the fiber is drawn while rotating said optical fiber preform, wherein a rotational speed of said optical fiber preform is 10 to 1,000 rpm, a drawing speed is 50 to 1,000 m/min, and a drawing tension is 2.4 to 13 kg/mm².
摘要翻译：在制造DCF的方法中，在旋转所述光纤预制件的同时拉伸光纤，其中所述光纤预制件的旋转速度为10至1,000rpm，拉伸速度为50至1,000m /分钟，拉伸张力为2.4 到13公斤/平方毫米。

4. 发明公开

EP2829522A1 METHOD FOR PRODUCING OPTICAL FIBER 有权
标题翻译：生产光纤的方法
公开(公告)号：EP2829522A1
公开(公告)日：2015-01-28
申请号：EP12872020.8
申请日：2012-12-17
申请人： Sumitomo Electric Industries, Ltd.
发明人： HARUNA, Tetsuya , HIRANO, Masaaki , TAMURA, Yoshiaki
IPC分类号： C03B37/027 , C03C13/04
CPC分类号： C03B37/027 , C03B37/0253 , C03B2201/07 , C03B2201/12 , C03B2201/20 , C03B2201/50 , C03B2203/02 , C03B2203/22 , C03B2203/23 , C03B2203/26 , C03B2205/40 , C03B2205/42 , C03B2205/60 , C03B2205/72 , C03C13/045 , C03C25/1061
摘要： Provided is a method for producing an optical fiber having low attenuation and including a core that contains an alkali metal element. An optical fiber preform that includes a core part and a cladding part is drawn with a drawing apparatus 1 to form an optical fiber 30, the core part having an average concentration of an alkali metal element of 5 atomic ppm or more and the cladding part containing fluorine and chlorine. The optical fiber includes a glass portion and resin coating portion and the glass portion is under residual stress that is a compressive stress of 130 MPa or less. During the drawing, the time during which an individual position of the optical fiber preform is maintained at 1500°C or higher is 110 minutes or less. The drawing speed is preferably 1200 m/min or more and more preferably 1500 m/min to 2300 m/min. The optical fiber preform preferably has a diameter of 70 mm to 170 mm and more preferably 90 mm to 150 mm.
摘要翻译：提供一种低衰减光纤的制造方法，该光纤包含含有碱金属元素的核。用拉伸装置1拉伸包括芯部和包层部分的光纤预制件，以形成光纤30，该核心部分的碱金属元素的平均浓度为5原子ppm或更高，并且包层部分包含氟和氯。光纤包括玻璃部分和树脂涂覆部分，并且玻璃部分处于130MPa或更低的压缩应力的残余应力下。在拉伸过程中，光纤预制棒的各个位置保持在1500℃或更高的时间为110分钟或更短。拉伸速度优选为1200m /分钟以上，更优选为1500m /分钟〜2300m /分钟。光纤预制棒的直径优选为70mm至170mm，更优选为90mm至150mm。

5. 发明公开

EP1439150A3 Method for producing twisted optical fiber with reduced polarization mode dispersion 失效
标题翻译：一种制造绞合光纤的方法，具有减少的偏振模色散
公开(公告)号：EP1439150A3
公开(公告)日：2004-08-04
申请号：EP04250119.7
申请日：2004-01-12
申请人： Sterlite Optical Technologies Ltd
发明人： Mohanty, Sangeeta Optical Technologies Limited , Sridhar, Nacham Optical Technologies Limited , Sinha, Salaj Optical Technologies Limited , Gulati, Nitesh Optical Technologies Limited , Das, Sthitadhi Optical Technologies Limited
IPC分类号： C03B37/027 , C03B37/03 , G02B6/16
CPC分类号： C03B37/032 , C03B37/02745 , C03B2203/19 , C03B2203/20 , C03B2203/36 , C03B2205/06 , C03B2205/42 , G02B6/02285
摘要： A method for drawing an optical fiber having reduced polarization mode dispersion (PMD) comprising the steps of drawing an optical fiber from an optical fiber preform whose core ovality is at max about 3%, coating the said optical fiber with acrylic polymer and twisting the said coated optical fiber with a pair of spinning wheels. The step of spinning the fiber is characterised in that the spin function used to spin the fiber is a combination of four discrete spin rates which repeat itself in a periodic fashion after a certain length of fiber drawn and the spin rate of each spin function varies in a trapezoidal manner along the drawn length of the fiber.

6. 发明授权

EP0698582B1 Method of fabricating a chromatic dispersion compensating glass fiber and an optical transmission system incorporating said fiber. 失效
标题翻译：制造彩色分离补偿光纤和包含这种光纤的光传输系统的方法。
公开(公告)号：EP0698582B1
公开(公告)日：1999-11-17
申请号：EP95113381.8
申请日：1995-08-25
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： Onishi, Masashi, c/o Yokohama Works , Amemiya, Koji, c/o Yokohama Works , Fukuda, Chie, c/o Yokohama Works , Kanamori, Hiroo, c/o Yokohama Works
IPC分类号： C03B37/027 , C03B37/012 , C03C13/04 , G02B6/16 , H04B10/18
CPC分类号： G02B6/02261 , C03B37/02745 , C03B2203/20 , C03B2203/36 , C03B2205/06 , C03B2205/42 , C03C13/045 , G02B6/02285 , G02B6/03611 , G02B6/0365 , G02B6/03666

7. 发明公开

EP3368489A1 METHODS OF MAKING AN OPTICAL FIBER, AND OPTICAL FIBER 有权
公开(公告)号：EP3368489A1
公开(公告)日：2018-09-05
申请号：EP16791256.7
申请日：2016-10-27
申请人： Corning Incorporated
发明人： BILLINGS, Kenneth Duane , BOOKBINDER, Dana Craig , CHLUDZINSKI, Paul Andrew , MOORE, Robert Clark , TANDON, Pushkar
IPC分类号： C03B37/027 , C03B37/029 , C03B37/03 , G02B6/02 , G02B6/028 , G02B6/036
CPC分类号： C03B37/02718 , C03B37/0253 , C03B37/02727 , C03B37/029 , C03B37/032 , C03B2201/02 , C03B2201/12 , C03B2201/20 , C03B2201/31 , C03B2201/50 , C03B2203/224 , C03B2203/24 , C03B2203/26 , C03B2205/42 , C03B2205/44 , C03B2205/55 , C03B2205/56 , C03B2205/60 , C03C25/106 , G02B6/02004 , G02B6/02009 , G02B6/0281 , G02B6/03622 , G02B6/03627 , G02B6/03633 , G02B6/03694
摘要： According to some embodiments a method of processing an optical fiber comprises the steps of: (i) drawing the fiber at a drawing rate of at least 30 m/sec; and (ii) cooling the drawn fiber in a gas at an average cooling rate less than 5000° C./s, such that said cooling reduces the temperature of the fiber from an entering temperature in the range between 1500° C. and 1700° C. to another temperature in the range between 1200° C. and 1400° C., the gas being at a temperature between 800° C. and 1500° C.; and the thermal conductivity κ of the gas being not greater than 1.5×10−4 cal/cm-s-K for at least one temperature within a range of 800° C. to 1500° C. at one atm (atmosphere) pressure absolute.

8. 发明授权

EP1105355B1 METHOD AND APPARATUS FOR TWISTING A COATED OPTICAL FIBER DURING DRAWING FROM A PREFORM 有权
标题翻译： METHOD AND APPARATUS FOR绘制从空白期间关涂覆光纤
公开(公告)号：EP1105355B1
公开(公告)日：2004-03-31
申请号：EP99929293.1
申请日：1999-06-22
申请人： Pirelli & C. S.p.A.
发明人： ROBA, Giacomo, Stefano , PATA, Roberto
IPC分类号： C03B37/03 , C03C25/00
CPC分类号： C03C25/12 , C03B37/032 , C03B2203/36 , C03B2205/06 , C03B2205/42 , C03C25/005
摘要： A method for manufacturing an optical fiber (100) having low PMD, comprises the steps of: a) heating at least one end portion (3a) of a preform (3); (b) drawing an optical fiber (100) from a free end of said heated end portion (3a) along a fiber drawing axis (I-I); c) coating said optical fiber (100) with a suitable coating material; d) applying to said coated optical fiber (100) a torque about said fiber drawing axis (I-I); e) winding said coated optical fiber (100) onto a collecting spool (9). According to the invention, step d) is carried out by means of a pulley (16) supported upstream of said collecting spool (9) and rotated about the fiber drawing axis (I-I), said optical fiber (100) being wound up onto said pulley (16) for an angle of at least about 360 DEG . Advantageously, such method also allows to notably increase the amount of optical fiber produced per unit of time with respect to the prior art. Disclosed is also an apparatus for carrying out the method and a device for applying torque to the fiber comprising a pulley.

9. 发明公开

EP1266308A1 MULTI-DIMENSIONAL DATABASE AND INTEGRATED AGGREGATION SERVER 审中-公开
标题翻译：多维数据库和集成整合服务器
公开(公告)号：EP1266308A1
公开(公告)日：2002-12-18
申请号：EP01914545.7
申请日：2001-02-28
申请人： Hyperroll Israel Ltd
发明人： BAKALASH, Reuven , SHAKED, Guy , CASPI, Joseph
IPC分类号： G06F17/30
CPC分类号： G06F17/30592 , C03B37/02718 , C03B2203/36 , C03B2205/42 , C03B2205/55 , Y10S707/99933 , Y10S707/99935 , Y10S707/99943
摘要： Improved method of and apparatus for aggregating data elements in multidimensional databases (MDDB). In one aspect of the present invention, the apparatus is realized in the form of a high-performance stand-alone (i.e. external) aggregation server which can be plugged-into conventional OLAP systems to achieve significant improvements in system performance. In accordance with the principles of the present invention, the stand-alone aggregation server contains a scalable MDDB and a high-performance aggregation engine that are integrated into the modular architecture of the aggregation server. The sand-alone aggregation server of the present invention can uniformly distribute data elements among a plurality of processors, for balanced loading and processing, and therefore is highly scalable. The stand-alone aggregation server of the present invention can be used to realize (i) an improved MDDB for supporting on-line analytical processing (OLAP) operations, (ii) an improved Internet URL Directory for supporting on-line information searching operations by Web-enabled client machines, as well as (iii) diverse types of MDDB-based systems for supporting real-time control of processes in response to complex states of information reflected in the MDDB. In another aspect of the present invention, the apparatus is integrated within a database management system (DBMS). The improved DBMS can be used to realize achieving a significant increase in system performance (e.g. deceased access/search time), user flexibility and ease of use. The improved DBMS system of the present invention can be used to realize an improved Data Warehouse for supporting on-line analytical processing (OLAP) operations or to realize an improved informational database system, operational database system, or the like.

10. 发明公开

EP1030823A1 DRAW CONSTANT DOWNFEED PROCESS 审中-公开
标题翻译：恒UNDERNEATH程序
公开(公告)号：EP1030823A1
公开(公告)日：2000-08-30
申请号：EP98946905.1
申请日：1998-09-10
申请人： CORNING INCORPORATED
发明人： ALLEN, Martin, W. , HASKINS, Lori, L. , RUGER, Lisa, M.
IPC分类号： C03B37/02 , C03B37/025 , C03B37/07
CPC分类号： C03B37/0253 , C03B2205/06 , C03B2205/40 , C03B2205/42 , C03B2205/44 , C03B2205/72
摘要： Optical fiber (14) is drawn from a preform (10) that is fed to a furnace at a constant downfeed rate. The optical fiber (14) is drawn by a tractor (20) at a rate of at least 10 meters per second and the tractor (20) is allowed to vary the draw speed of the fiber (14) based on the fiber diameter as measured by a diameter monitor (15) during the draw processing in order to maintain a relatively constant fiber diameter. Maintaining the preform downfeed rate constant even at high draw rates in excess of 20 meters per second does not adversely effect the draw process and is believed to reduce or eliminate oscillations in the draw control loop that can cause variations in the core shape during fiber formation, resulting in reduced PMD and improved MFD uniformity.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式