专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明申请

US20040033015A1 Dispersion compensation module comprising a single spool on which multiple optical fibers are wound 审中-公开
标题翻译：色散补偿模块包括缠绕多根光纤的单个线轴
公开(公告)号：US20040033015A1
公开(公告)日：2004-02-19
申请号：US10223726
申请日：2002-08-19
发明人： Michael Norgaard Andersen , Curt Helge Carlsen
IPC分类号： G02B006/26
CPC分类号： G02B6/29376
摘要： A dispersion compensation module (DCM) for compensating dispersion of an optical fiber transmission link is provided. The DCM comprises a spool having at least first and second optical fibers wound thereabout and optically coupled to each other. By winding multiple optical fibers about a single spool, considerable space savings can be realized for the DCM compared to known DCM, which utilize a separate respective spool for each respective optical fiber of the DCM. Space considerations are becoming ever increasingly important in central office (CO) environments, and the single-spool, multiple-fiber DCM of the present invention provides a space saving solution for DCM being implemented in COs. Also, with ever increasing bandwidths, dispersion compensation is becoming necessary, which increases the need for employing DCM at COs. Because the number of DCMs employed at COs will likely increase as bandwidth requirements increase, the need for efficient space utilization at COs will also increase. The present invention enables significant space savings to be realized at COs and other places due to the reduced size of the DCM of the present invention compared to DCMs currently available.
摘要翻译：提供了用于补偿光纤传输链路的色散的色散补偿模块（DCM）。 DCM包括具有至少第一和第二光纤缠绕在其上并且彼此光学耦合的线轴。通过围绕单个卷轴缠绕多个光纤，与已知的DCM相比，可以实现相当大的空间节省，该DCM利用DCM的每个相应光纤单独的相应的卷轴。空间考虑在中心局（CO）环境中变得越来越重要，本发明的单线轴多光纤DCM为在CO中实现的DCM提供了节省空间的解决方案。此外，随着带宽的增加，色散补偿变得必要，这增加了在COs上使用DCM的需要。由于随着带宽需求的增加，在CO上使用的DCM数量可能会增加，因此在COs上有效利用空间的需求也将增加。由于与目前可用的DCM相比，本发明的DCM的尺寸减小，本发明可以在CO和其它地方实现显着的空间节省。

12. 发明授权

US06687433B2 WDM optical communication system 失效
标题翻译： WDM光通信系统
公开(公告)号：US06687433B2
公开(公告)日：2004-02-03
申请号：US09726603
申请日：2000-12-01
申请人： Toshiaki Okuno , Motoki Kakui
发明人： Toshiaki Okuno , Motoki Kakui
IPC分类号： G02B626
CPC分类号： G02B6/29376 , H04B10/2513 , H04B10/25253
摘要： The present invention relates to a WDM optical communication system comprising a structure which effectively suppresses the waveform deterioration resulting from nonlinear optical phenomena of each signal in a 1.58-&mgr;m wavelength band in an optical transmission line including a dispersion-shifted optical fiber having a zero-dispersion wavelength in a 1.55-&mgr;m wavelength band. The WDM optical communication system includes a hybrid transmission unit in which a single-mode optical fiber and a dispersion-shifted optical fiber are arranged such that signals successively pass therethrough. The single-mode optical fiber has a zero-dispersion wavelength in a 1.3-&mgr;m wavelength band and an effective area ASMF at a wavelength of 1.58 &mgr;m. The dispersion-shifted optical fiber has a zero-dispersion wavelength in the 1.55-&mgr;m wavelength band and, at a wavelength of 1.58 &mgr;m, a dispersion with an absolute value of 0.5 ps/nm/km or more and an effective area ADSF smaller than the effective area ASMF of the single-mode optical fiber.
摘要翻译：本发明涉及一种WDM光通信系统，该系统包括一种结构，其有效地抑制由包括具有零点偏移的色散位移光纤的光传输线中的1.58μm波长带中的每个信号的非线性光学现象引起的波形劣化，色散波长在1.55μm波长带。 WDM光通信系统包括混合传输单元，其中单模光纤和色散位移光纤布置成使得信号连续通过。单模光纤具有1.3μm波长带的零色散波长和波长为1.58μm的有效面积ASMF。色散位移光纤在1.55μm波长带中具有零色散波长，在1.58μm波长处具有绝对值为0.5ps / nm / km或更大的有效面积ADSF小于单模光纤的有效面积ASMF。

13. 发明授权

US06628859B2 Broadband mode converter 有权
标题翻译：宽带模式转换器
公开(公告)号：US06628859B2
公开(公告)日：2003-09-30
申请号：US09815142
申请日：2001-03-22
申请人： Lin Huang , Justin Boyd Judkins
发明人： Lin Huang , Justin Boyd Judkins
IPC分类号： G02B626
CPC分类号： G02B6/14 , G02B6/2826 , G02B6/29376 , H04J14/04
摘要： A mode converter for converting an optical signal from a first propagation mode (e.g., LP01) to a second propagation mode (e.g., LP02). The mode converter includes a first waveguide supporting a first mode of propagation. The mode converter also includes a second waveguide supporting a second mode of propagation. The first and second waveguides each having a group index characteristic, wherein the first group index characteristic is matched with the second group index characteristic such that electromagnetic energy propagating through the first waveguide at the first mode couples to the second waveguide at the second mode.
摘要翻译：用于将来自第一传播模式（例如LP01）的光信号转换为第二传播模式（例如LP02）的模式转换器。模式转换器包括支持第一传播模式的第一波导。模式转换器还包括支持第二传播模式的第二波导。第一和第二波导各自具有组折射率特性，其中第一组折射率特性与第二组折射率特性相匹配，使得以第一模式传播通过第一波导的电磁能在第二模式下耦合到第二波导。

14. 发明申请

US20030174981A1 Dispersion compensating module and fiber for control of residual dispersion 有权
标题翻译：色散补偿模块和光纤用于控制残留色散
公开(公告)号：US20030174981A1
公开(公告)日：2003-09-18
申请号：US10098679
申请日：2002-03-15
申请人： Fitel USA Corp.
发明人： David John DiGiovanni , William A. Reed , Man F. Yan , Lars Gruner-Nielsen , Susanne Dyrbol
IPC分类号： G02B006/16
CPC分类号： G02B6/02261 , G02B6/03611 , G02B6/03644 , G02B6/29376 , G02B6/29395
摘要： A dispersion compensating fiber and module are described for controlling residual dispersion in a dispersion compensated system. The dispersion compensating fiber is designed with dispersion curve having an inflection point at a wavelength near the optical transmission operating wavelength region. The dispersion curve, having an inflection point near the operating wavelength region, produces a relative dispersion slope that closely matches the relative dispersion slope of the transmission fiber over a relatively wide bandwidth surrounding the operating wavelength region.
摘要翻译：描述了用于控制色散补偿系统中的残余色散的色散补偿光纤和模块。色散补偿光纤被设计成具有在光传输工作波长区域附近的波长处具有拐点的色散曲线。具有靠近工作波长区域的拐点的色散曲线产生与围绕工作波长区域的相对宽的带宽上的传输光纤的相对色散斜率紧密匹配的相对色散斜率。

15. 发明申请

US20030048986A1 Broadband mode converter 有权
公开(公告)号：US20030048986A1
公开(公告)日：2003-03-13
申请号：US09815142
申请日：2001-03-22
发明人： Lin Huang , Justin Boyd Judkins
IPC分类号： G02B006/26 , G02B006/28
CPC分类号： G02B6/14 , G02B6/2826 , G02B6/29376 , H04J14/04
摘要： A mode converter for converting an optical signal from a first propagation mode (e.g., LP01) to a second propagation mode (e.g., LP02). The mode converter includes a first waveguide supporting a first mode of propagation. The mode converter also includes a second waveguide supporting a second mode of propagation. The first and second waveguides each having a group index characteristic, wherein the first group index characteristic is matched with the second group index characteristic such that electromagnetic energy propagating through the first waveguide at the first mode couples to the second waveguide at the second mode.

16. 发明授权

US06526208B1 Dispersion managed fiber optic cable and system 有权
标题翻译：色散管理光缆和系统
公开(公告)号：US06526208B1
公开(公告)日：2003-02-25
申请号：US09723018
申请日：2000-11-27
申请人： Jonathan King , Richard Epworth , Marco Cavallari , Alan Robinson , Benoit Charbonnier
发明人： Jonathan King , Richard Epworth , Marco Cavallari , Alan Robinson , Benoit Charbonnier
IPC分类号： G02B616
CPC分类号： G02B6/29376 , H04B10/25253
摘要： A hybrid optical fiber comprises a first fiber section comprising a fiber or a concatenation of fibers having first dispersion characteristics at a predetermined operating wavelength and a second fiber section coupled to the first fiber section to form the hybrid fiber. The first fiber dispersion characteristics are selected to maintain the signal dispersion within desired limits, whereas the second fiber is optimised for low loss. Dispersion compensation is provided in the first section of the fiber span where the signal intensity is highest, and therefore the region of the fiber span where these non-linearities have greatest effect. In the second section of the fiber span, the non-linear effects can be ignored, so it is optimised for low loss rather than for dispersion compensation.
摘要翻译：混合光纤包括第一纤维部分，其包括纤维或具有预定工作波长的第一分散特性的纤维级联和与第一纤维部分耦合以形成混合纤维的第二纤维部分。选择第一光纤色散特性以将信号色散保持在期望的限度内，而第二光纤针对低损耗进行优化。在信号强度最高的光纤跨段的第一部分中提供色散补偿，因此在这些非线性具有最大效果的光纤跨度的区域中提供色散补偿。在光纤跨度的第二部分，非线性效应可以忽略，因此它针对低损耗而不是色散补偿进行了优化。

17. 发明申请

US20030021555A1 Undersea optical fiber telecommunication system and method 有权
标题翻译：海底光纤通信系统及方法
公开(公告)号：US20030021555A1
公开(公告)日：2003-01-30
申请号：US09912701
申请日：2001-07-24
发明人： John R. Toth , John P. Strauss
IPC分类号： G02B006/44
CPC分类号： G02B6/4428 , G02B6/29376 , G02B6/3816
摘要： A modular undersea optical fiber telecommunication system includes a plurality of fiber optic cable segments each containin5g fibers of a fiber type different from at least some of the other cable segments. Each cable segment has a plug unit at one end and a receptacle unit at the opposite end comprising mating halves of an underwater connector. The connector units contain a plurality of optical fiber contact terminals, and each optical fiber in the cable segment is terminated to a respective one of the contact terminals in the plug unit at one end and to a respective one of the contact terminals in the receptacle unit at the opposite end. The plug unit of each cable segment is releasably securable to a receptacle unit of a selected second cable segment and the receptacle unit of each cable segment is releasably securable to a plug unit of a selected third cable segment, such that the optical fibers in the cable segment are connected with the fibers in the second and third cable segments without requiring splices.
摘要翻译：模块化海底光纤通信系统包括多个光纤电缆段，每个光纤电缆段包含不同于至少一些其它电缆段的光纤类型的5g光纤。每个电缆段在一端具有插头单元，并且在相对端具有包括水下连接器的配合半部的插座单元。连接器单元包含多个光纤接触端子，并且电缆段中的每个光纤在一端端接到插头单元中的接触端子中的相应一个以及插座单元中的相应接触端子之一在另一端每个电缆段的插头单元可释放地固定到所选择的第二电缆段的插座单元，并且每个电缆段的插座单元可释放地固定到所选择的第三电缆段的插头单元，使得电缆中的光纤片段与第二和第三电缆段中的纤维连接，而不需要接头。

18. 发明授权

US06356684B1 Adjustable optical fiber grating dispersion compensators 失效
标题翻译：可调光纤光栅色散补偿器
公开(公告)号：US06356684B1
公开(公告)日：2002-03-12
申请号：US09548977
申请日：2000-04-14
申请人： David Brian Patterson , Brian Charles Moore
发明人： David Brian Patterson , Brian Charles Moore
IPC分类号： G02B634
CPC分类号： G02B6/29376 , G02B6/2932 , G02B6/29395 , H04B10/2519
摘要： Adjustable optical fiber grating dispersion compensators. The invention provides a fully tunable dispersion compensator with a wide dynamic range. Dispersion compensators according to the invention are based on uniform fiber Bragg grating technology. Individual gratings are tuned so that the gratings, which normally operate in reflection mode, operate in transmission mode with the frequency of interest falling just outside a reflection band edge. Gratings are combined to provide broadband, or multiple-wavelength dispersion. Tuning is provided via transducers coupled to the gratings. A control system can be connected to the transducers to provide a control signal so that the frequencies of the gratings can be dynamically tuned. The control system operates by measuring signals from opto-electronic detectors. The signals are used to determine a fractional spectral power transmitted through a filter. The fractional spectral power is related to the amount of dispersion present in the optical path of the network.
摘要翻译：可调光纤光栅色散补偿器。本发明提供了具有宽动态范围的完全可调色散补偿器。根据本发明的色散补偿器基于均匀的光纤布拉格光栅技术。调整各个光栅，使得通常以反射模式操作的光栅以传输模式工作，感兴趣的频率正好落在反射带边缘的外侧。光栅被组合以提供宽带或多波长色散。通过耦合到光栅的传感器提供调谐。控制系统可以连接到换能器以提供控制信号，使得光栅的频率可以被动态地调谐。控制系统通过测量光电检测器的信号进行工作。这些信号用于确定通过滤波器传输的分数光谱功率。分数光谱功率与存在于网络光路中的色散量有关。

19. 发明申请

US20020003938A1 Dispersion managed fibers having reduced sensitivity to manufacturing variabilities 失效
标题翻译：色散管理光纤对制造变异性的敏感度降低
公开(公告)号：US20020003938A1
公开(公告)日：2002-01-10
申请号：US09853070
申请日：2001-05-09
发明人： V. Srikant
IPC分类号： G02B006/18 , G02B006/22
CPC分类号： G02B6/02004 , G02B6/02247 , G02B6/03611 , G02B6/03644 , G02B6/03677 , G02B6/29376
摘要： Dispersion managed fibers which preferably have a central core region, a moat region, and a ring region are provided. The central core region preferably has an alpha profile with an alpha value preferably less than about 2.3. The moat region preferably includes four sub-regions, namely, a first sub-region (11) in which the index of refraction decreases, a second sub-region (12) in which the index of refraction increases substantially linearly, a fourth sub-region (14) in which the index of refraction again increases substantially linearly, and a third sub-region (13) which serves as a transition region which smoothly connects the third and fourth substantially linear sub-regions. The dispersion managed fibers preferably have the following properties: (a) they exhibit reduced sensitivity to manufacturing variabilities, (b) they have relatively small changes in mode field diameter at the junctions between fiber sections having positive dispersions and fiber sections having negative dispersions, and/or (c) they can be readily manufactured using the tablet method.
摘要翻译：提供优选具有中心核心区域，护环区域和环形区域的分散管理的纤维。中心芯区优选具有α值优选小于约2.3的α分布。护城河区域优选地包括四个子区域，即其中折射率降低的第一子区域（11），其中折射率基本上线性地增加的第二子区域（12），第四子区域其中折射率再次基本上线性地增加的区域（14）和用作平滑地连接第三和第四基本线性子区域的过渡区域的第三子区域（13）。分散管理的纤维优选具有以下性质：（a）它们对制造变异性的敏感性降低，（b）它们在具有正分散体的纤维部分和具有负分散体的纤维部分之间的接合处的模场直径变化相对较小，以及 /或（c）它们可以使用片剂方法容易地制造。

20. 发明申请

US20010036348A1 Method of fabricating an optical fiber with varying chromatic dispersion 审中-公开
标题翻译：制造具有不同色散的光纤的方法
公开(公告)号：US20010036348A1
公开(公告)日：2001-11-01
申请号：US09808043
申请日：2001-03-15
发明人： Jean-Claude Rousseau , Jean-Francois Chariot
IPC分类号： G02B006/16 , C03B037/023
CPC分类号： G02B6/03688 , C03B37/027 , C03B2203/18 , C03B2203/22 , C03B2203/36 , C03B2205/40 , G02B6/02257 , G02B6/02271 , G02B6/0281 , G02B6/03644 , G02B6/29376
摘要： The invention proposes to fabricate an optical fiber by drawing a preform including several layers, at least one of which has a different viscosity to the other layers at the drawing temperature. The drawing tension is varied during drawing to obtain a fiber having a constant diameter and a varying profile. The chromatic dispersion of the fiber can therefore vary along the fiber. The invention applies to the fabrication of dispersion managed fibers (DMF).
摘要翻译：本发明提出通过拉伸预成型件来制造光纤，预成型件包括几层，其中至少一层在拉伸温度下具有与其它层不同的粘度。在拉伸过程中拉伸张力是不同的，以获得具有恒定直径和变化轮廓的纤维。因此，纤维的色散可沿纤维变化。本发明适用于分散管理纤维（DMF）的制造。

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