公开(公告)号：EP1325894A3

公开(公告)日：2004-09-15

申请号：EP02026097.2

申请日：2002-11-22

申请人： FITEL USA CORPORATION, (A Delaware Corporation)

发明人： Digiovanni, Danid John ,  Dimarcello, Frank Vincent ,  Jiang, XinLi ,  Oulundsen, George E. ,  Pandit, Sandeep Prabhakar

IPC分类号： C03B37/027 ,  G02B6/16 ,  G02B6/18 ,  C03B37/03

CPC分类号： G02B6/0288 ,  C03B37/02745 ,  C03B37/032 ,  C03B2203/19 ,  C03B2203/36 ,  C03B2205/06 ,  G02B6/02 ,  G02B6/02285 ,  G02B6/02395 ,  G02B6/03627

摘要： The specification describes a technique for drawing circular core multimode optical fiber using twist during draw to increase fiber bandwidth.

摘要翻译： 该说明书描述了一种在绘制过程中使用扭曲来绘制圆形多模光纤的技术，以增加光纤带宽。

公开(公告)号：EP1403669A3

公开(公告)日：2004-08-18

申请号：EP03020824.3

申请日：2003-09-12

申请人： FITEL USA CORPORATION, (A Delaware Corporation)

发明人： Gruner-Nielsen, Lars ,  Le, Quang, Nghi, Trong ,  Kristensen, Poul ,  Wandel, Marie

IPC分类号： G02B6/293 ,  G02B6/22 ,  G02B6/16 ,  H04B10/18

CPC分类号： G02B6/02261 ,  G02B6/0228 ,  G02B6/02285 ,  G02B6/03611 ,  G02B6/03644 ,  G02B6/03694 ,  G02B6/29377 ,  H04B10/2525

摘要： Disclosed is a dispersion-compensating (DC) module [740] comprising a first length of DC optical fiber [10] in tandem with a second length of a standard singlemode optical fiber. The DC fiber is fabricated from silica glass and has a refractive index profile that includes a core region [51] surrounded by a cladding region [52] having a nominal refractive index n 4 . The core region includes a central core [511] having a nominal refractive index n 1 , a "trench" [512] surrounding the central core having a nominal refractive index n 2 , and a "ridge" [513] surrounding the trench having a nominal refractive index n 3 . A range of refractive index profiles has been found that provides relative dispersion slopes (RDS) that are greater than 0.012 nm -1 and figures of merit that are greater than 200 ps/(nm-dB).

公开(公告)号：EP1398906A1

公开(公告)日：2004-03-17

申请号：EP03020078.6

申请日：2003-09-04

申请人： FITEL USA CORPORATION (a Delaware Corporation)

发明人： Colombo, Bruce A. ,  Feustel, Clay A. ,  Jennings, Mark R. ,  Jones, Sean L. ,  Lampert, Norman R. ,  Leone, Frank S. ,  Maccormack, Francis G. ,  Sandels, Gregory A. ,  Subh, Naif T. ,  White, Ian T.

IPC分类号： H04L12/24 ,  G06F13/40

CPC分类号： H04L41/00 ,  G02B6/3825 ,  G02B6/3865 ,  G02B6/3895 ,  G02B6/3897

摘要： A self-registration system for dynamically updating information related to a network including a writer (301 ) that receives the information from a computing device (295), an adapter (130), and a connector (150) coupled to the adapter (130), the connector (150) characterized by an integrated circuit (261) that receives the information from the writer (301 ) via the adapter (130) and stores the information.

公开(公告)号：EP1398654A2

公开(公告)日：2004-03-17

申请号：EP03010413.7

申请日：2003-05-08

申请人： FITEL USA CORPORATION (a Delaware Corporation)

发明人： Aloisio, Charles, J. ,  Harper, Daniel ,  Siddiqui, Shahabuddin ,  Turnipseed, John, M.

IPC分类号： G02B6/16 ,  C03C25/10

CPC分类号： G02B6/4438 ,  C03C25/1065 ,  C03C25/465 ,  G02B6/02395 ,  G02B6/4402

摘要： An optical fiber product (10) comprises an optical fiber (12) through which optical signals can be transmitted. A primary coating (14) comprising a foam material surrounds the optical fiber (12). A secondary coating (16) surrounds the primary coating (14). At least one of the primary coating (14) and the secondary coating (16) protect the optical fiber (12) and resists microbending forces. A method of manufacture is also provided.

摘要翻译： 一种光纤产品（10）包括光纤（12），光信号可以通过该光纤传输。 包含泡沫材料的主涂层（14）围绕光纤（12）。 第二涂层（16）围绕第一涂层（14）。 主涂层（14）和次涂层（16）中的至少一个保护光纤（12）并且抵抗微弯曲力。 还提供了一种制造方法。

公开(公告)号：EP1398653A1

公开(公告)日：2004-03-17

申请号：EP02027634.1

申请日：2002-12-11

申请人： FITEL USA CORPORATION (a Delaware Corporation)

发明人： Gaarde, Peter ,  Gruner-Nielsen, Lars ,  Larsen, Christian ,  Palsdottir, Bera ,  Qian, Yujun

IPC分类号： G02B6/16 ,  H04B10/17 ,  H04B10/18

CPC分类号： G02B6/03666 ,  G02B6/02261 ,  G02B6/03611 ,  G02B6/03644 ,  G02B6/29376 ,  H04B10/2525 ,  H04B10/2916

摘要： An optical fiber suited for dispersion compensation with simultaneous Raman amplification. The fiber has a central core and an index profile that defines successively concentric regions radially outward of the core. The core has a diameter of between 2 and 5 microns (µm) and a refractive index difference (Δn) with respect to the outer cladding of between 0.012 and 0.035. A trench region adjacent the core is between 2 and 6 µm wide and has a negative Δn of between -0.015 and -0.003. A ring region adjacent the trench region is between 1 and 5 µm wide and has a Δn of between 0.001 and 0.015, and an inner cladding surrounding the ring region has a width of between zero and 5 µm and a Δn of between -0.011 and 0.001. A dispersion slope compensating module (DSCM) including the fiber obtains a relatively high Raman gain with respect to conventional DSCMs that are pumped for Raman amplification.

摘要翻译： 光纤（10）具有宽度为2〜6μm的沟槽区域（14），折射率分布图中的负折射率差（Δn）为-0.015〜-0.003。 环区域（16）的折射率分布宽度为1〜5μm，折射率差为0.001〜0.015。 内包层（18）的宽度为0〜5μm，折射率差为-0.011和0.001。 还包括以下独立权利要求：（1）光纤色散斜率补偿模块; （2）光纤传输系统。

公开(公告)号：EP1396952A1

公开(公告)日：2004-03-10

申请号：EP03010412.9

申请日：2003-05-08

申请人： FITEL USA CORPORATION (a Delaware Corporation)

发明人： Rathje, Jacob

IPC分类号： H04B10/18

CPC分类号： H04B10/2525

摘要： The present invention enables the usable bandwidth of an optical fiber transmission link (10, 14; 31, 36) to be increased. The transmission fiber (14, 36) of the link is coupled with a dispersion compensation fiber (DCF+) (13, 34) that has a positive dispersion and a dispersion slope such that the relative dispersion slope (RDS) of the DCF+ (13, 34) is lower than the RDS of the transmission fiber (14, 36). Because the RDS of the DCF+ (13, 34) is lower than the RDS of the transmission fiber (14, 36), the RDS of the combination of the transmission fiber (14, 36) and the DCF+ (13, 34) is below the RDS of the transmission fiber (14, 36). When the DCF+ (13, 34) is combined with a DCF having a negative dispersion (DCF-), the transmission link (10, 14; 31, 36) is dispersion compensated by DCF- (13, 34) and the usable bandwidth of the optical fiber transmission link (10, 14; 31, 36) is increased compared to the compensation of the transmission fiber (14, 36) by a single DCF- (13, 34).

摘要翻译： 本发明能够提高光纤传输链路（10,14; 31,36）的可用带宽。 链路的传输光纤（14,36）与具有正色散和色散斜率的色散补偿光纤（DCS）（13,34）耦合，使得DCF +（13,34）的相对色散斜率（RDS） 34）低于传输光纤（14,36）的RDS。 由于DCF +（13,34）的RDS低于传输光纤（14,36）的RDS，传输光纤（14,36）和DCF +（13,34）的组合的RDS低于 传输光纤（14,36）的RDS。 当DCF +（13,34）与具有负色散（DCF-）的DCF组合时，传输链路（10,14; 31,36）被DCF-（13,34）进行色散补偿，并且可用带宽 与通过单个DCF-（13,34）的传输光纤（14,36）的补偿相比，光纤传输链路（10,14; 31,36）增加。

公开(公告)号：EP1396743A2

公开(公告)日：2004-03-10

申请号：EP03010402.0

申请日：2003-05-08

申请人： FITEL USA CORPORATION (a Delaware Corporation)

发明人： Gruner-Nielsen, Lars ,  Nissen Knudsen, Stig ,  Ostergaard Pedersen, Morten

IPC分类号： G02B6/16

CPC分类号： G02B6/02009 ,  G02B6/02261 ,  G02B6/0281 ,  G02B6/03666 ,  G02B6/29377

摘要： An inverse dispersion fiber (10) is provided that has a relatively low fiber loss, a relatively low fiber splice loss and a relatively large effective mode-field area. The inverse dispersion fiber (10) includes a doped core region (11) with an index of refraction n 1 , a cladding region (15) with an index of refraction n 2 , and a trench region (12), a first barrier region (13) and a second barrier region (14) with indices of refraction n 3 , n 4 , and n 5 , respectively, formed between the doped core region (11) and the cladding region (15). The various regions of the inverse dispersion fiber (10) are manufactured in such a way that the refractive index value ranges are, for example, approximately 0.709% 1 -n 2 )/n 2 3 -n 2 )/n 2 4 -n 2 )/n 2 5 - n 2 )/n 2 eff , that is, for example, greater than approximately 30.0 µm 2 , both at a wavelength of 1550 nm.

摘要翻译： 提供了具有相对较低的光纤损耗，较低的光纤接合损耗和较大的有效模场面积的反向色散光纤（10）。 反向色散光纤（10）包括具有折射率n1的掺杂核心区域（11），具有折射率n2的包层区域（15）和沟槽区域（12），第一屏障区域（13） 以及分别形成在掺杂核心区域（11）和包层区域（15）之间的折射率n3，n4和n5的第二势垒区域（14）。 （10）的各个区域以折射率值范围为例如约0.709％<（n1-n2）/ n2 <1％，约-0.358％<（n3）的方式制造 -n2）/ n2 <-0.293％，约0.194％<（n4-n2）/n2 <0.237％和约-0.045％<（n5-n2）/n2 <-0.037％。 根据优选实施例的反向色散光纤（10）具有大约-44皮秒/（纳米 - 千米）的色散和相对较大的有效核​​心面积Aeff，例如大于约30.0μm <2>，均为1550nm波长。

公开(公告)号：EP1394524A2

公开(公告)日：2004-03-03

申请号：EP03014199.8

申请日：2003-06-24

申请人： FITEL USA CORPORATION (a Delaware Corporation)

发明人： Sengupta, Abhijit ,  Mccurdy, Alan

IPC分类号： G01M11/00

CPC分类号： H04B10/2569 ,  G01M11/336

摘要： Systems and methods are disclosed for measuring Polarization Mode Dispersion (PMD) of single-mode optical fiber. The method allows for a faster and easier method of accurately measuring intrinsic ultra low PMD optical fiber in a low mode coupling state. The method involves the introduction of a plurality of localized external perturbations on the optical fiber, after which the optical fiber is allowed to reach a steady state, and then measurement of the differential group delay occurs using standard measurement techniques. The plurality of localized external perturbations is altered followed by another measurement of the differential group delay. After obtaining a sufficient number of measurements to provide a Maxwellian distribution, the Polarization Mode Dispersion value can be calculated as the average of the distribution.

摘要翻译： 系统和方法是游离缺失盘用于测量单模光纤的偏振模色散（PMD）。 该方法允许在低模式耦合状态测量精确地设定固有超低PMD光纤的更快和更容易的方法。 该方法包括引入到光纤的局部外部扰动，afterwhich光纤被允许达到稳态，然后将差分群的测定的多个延迟的发生使用标准的测量技术。 局部外部扰动的多元性被改变由所述差分群时延的另一测量其次。 获得的测量值足够数量以提供麦克斯韦分布后，偏振模色散值可以被计算为平均分布的。

公开(公告)号：EP1394125A1

公开(公告)日：2004-03-03

申请号：EP03019787.5

申请日：2003-08-29

申请人： FITEL USA CORPORATION (a Delaware Corporation)

发明人： Atkins, Robert M. ,  Liu, Alice W. ,  Kristensen, Poul ,  Pedersen, Morten Ostergaard ,  Knudsen, Stig Nissen ,  Chang, Kai H. ,  Bromage, Jake ,  Nielsen, Jan Levin

IPC分类号： C03B37/014 ,  C03C13/04 ,  G02B6/16

CPC分类号： C03C13/045 ,  C03B37/014 ,  C03B2201/03 ,  C03B2201/07 ,  G02B6/02

摘要： Applicants have discovered the existence of loss peaks in optical fiber transmission systems using wavelengths in the E-band and the L-band. Specifically, they have discovered the existence of narrow loss peaks at 1440 nm, 1583 nm and 1614 nm. Because the peaks are relatively narrow, they cannot be easily removed by conventional gain equalizers in long haul transmission systems, and although the peaks are relatively small, they can nonetheless cause transmission channels to drop out in amplified DWDM (Dense Wavelength Division Multiplexing) transmission systems. Applicants have further discovered that these loss peaks are due to carbon contamination of the transmission fiber. Thus optical fibers should be fabricated essentially free of carbon contamination. This means eliminating carbon-containing reagents in preform and tube-making processes. By the term carbon-free is preferably meant

摘要翻译： 申请人已经发现在使用在E波段和L波段的波长光纤传输系统损耗峰值的存在。 具体而言，全心全意在1440纳米，1583纳米和1614纳米的发现的窄损耗峰值的存在。由于该峰是相对窄的，它们不能容易地通过在长距离光纤传输系统的传统增益均衡器除去，虽然峰是相对小的 ，它们可以但要使传输信道在扩增DWDM（密集波分复用）​​传输系统中，以滴出。 申请人已经发现进一步确实论文损耗峰值是由于传输光纤的碳污染。 THUS光纤应来制造实质上无碳污染。 这意味着消除在预成型件和制管过程含碳试剂。 由术语无碳优选地表示<1000ppm的重量的碳，更优选<10ppm以下，最优选<1ppm的。

公开(公告)号：EP1271194A3

公开(公告)日：2003-11-12

申请号：EP02014330.1

申请日：2002-06-27

申请人： FITEL USA CORPORATION (a Delaware Corporation)

发明人： Ramachandran, Siddarth

IPC分类号： G02B6/124 ,  G02B6/293 ,  H01S5/10 ,  H01S3/067

CPC分类号： G02B6/02095 ,  G02B6/12007 ,  G02B6/14 ,  G02B6/255 ,  G02B6/29319 ,  G02B6/29389 ,  G02B6/4215 ,  G02B2006/12107 ,  H01S3/0675 ,  H01S3/08027 ,  H01S3/139

摘要： The specification describes an optical filter wherein long period gratings (LPGs) (12,14) are used in a new configuration to provide in-line bandpass filtering of optical signals. In the basic embodiment, two dissimilar LPGs are installed in the optical fiber transmission line. The first LPG (12) converts light, over a broad wavelength range, being transmitted in the fundamental, or LP 01 , mode of the optical fiber transmission line into light in a higher order mode (HOM) of the optical fiber. The mode-converted signal, with mode LP m , n . is then coupled to a second waveguide (13), the second waveguide having transmission characteristics different from those of the first. The second waveguide supports propagation of light in a LP m,n mode. The mode-converted signal is then transmitted through a second LPG where the signal over a selected narrow band of wavelengths that is accepted by the second LPG is converted back to a LP 01 mode. The selected narrow band in the LP 01 mode propagates efficiently over the remainder of the optical fiber transmission path.