公开(公告)号：US06813426B2

公开(公告)日：2004-11-02

申请号：US10208779

申请日：2002-08-01

申请人： Ludovic Fleury ,  Louis-Anne de Montmorillon ,  Pierre Sillard ,  Pascale Nouchi

发明人： Ludovic Fleury ,  Louis-Anne de Montmorillon ,  Pierre Sillard ,  Pascale Nouchi

IPC分类号： G02B602

CPC分类号： G02B6/02247 ,  G02B6/02242 ,  G02B6/02261 ,  G02B6/02266 ,  G02B6/03644 ,  H04B10/25253

摘要： The invention provides a fiber with continuously changing chromatic dispersion; it limits the quantity of dispersion-compensating fiber needed in a transmission system to compensate the cumulative chromatic dispersion in the line fiber. The fiber has a higher chromatic dispersion at a first end than at the other end, referred to as the second end. The chromatic dispersion varies along the fiber, decreasing over at least a portion of the fiber. At the first end the chromatic dispersion can be of the order of the dispersion of a conventional line fiber, i.e. close to 8 ps/(nm.km). At the second end the chromatic dispersion can have a value of the order of 4 ps/(nm.km). The fiber is used as the line fiber in a transmission system at the beginning of a section between two repeaters. The chromatic dispersion in the vicinity of the first end limits non-linear effects at the beginning of the section; the decrease of the chromatic dispersion in the fiber ensures that at its second end the fiber can be connected to a fiber having lower chromatic dispersion. The fiber can be produced with an index profile in the shape of a rectangle and a ring by varying only the indices, and not the radii.

摘要翻译： 本发明提供一种具有不断变化的色散的光纤; 它限制了传输系统中所需的色散补偿光纤的数量，以补偿线路光纤中的累积色散。 光纤在第一端具有比在另一端更高的色散，称为第二端。 色散沿着纤维变化，在纤维的至少一部分上减小。 在第一端，色散可以是常规线光纤的色散的顺序，即接近8ps /（nm·km）。 在第二端，色散可以具有4ps /（nm·km）量级的值。 光纤在两个中继器之间的部分开始处用作传输系统中的线路光纤。 第一端附近的色散限制了该段开始时的非线性效应; 纤维中的色散的降低确保了在其第二端，光纤可以连接到具有较低色散的光纤。 纤维可以通过仅改变指数而不是半径而以矩形和环的形状产生折射率分布。

公开(公告)号：US06612756B1

公开(公告)日：2003-09-02

申请号：US09471025

申请日：1999-12-23

申请人： Pierre Sillard ,  Louis-Anne de Montmorillon ,  Ludovic Fleury ,  Pascale Nouchi

发明人： Pierre Sillard ,  Louis-Anne de Montmorillon ,  Ludovic Fleury ,  Pascale Nouchi

IPC分类号： G02B622

CPC分类号： G02B6/03644 ,  G02B6/02014 ,  G02B6/02271 ,  G02B6/0228

摘要： An in-cable monomode optical fiber has a step and ring index profile and, for a wavelength of 1,550 nm: an effective surface area greater than or equal to 60 &mgr;m2, a chromatic dispersion from 3 to 14 ps/(nm.km), a chromatic dispersion slope from 0 to 0.1 ps/(nm2.km), and a ratio between the effective surface area and the chromatic dispersion slope greater than 900 &mgr;m2.nm2.km/ps.

摘要翻译： 在线单模光纤具有阶跃和环形折射率分布，并且对于波长为1,550nm的有效表面积大于或等于60mum2，3至14ps /（nm.km）的色散， 0至0.1ps /（nm2.km）的色散斜率，有效表面积与色散斜率之比大于900m22.km2.ps。

公开(公告)号：US06263138B1

公开(公告)日：2001-07-17

申请号：US09372087

申请日：1999-08-11

申请人： Pierre Sillard ,  Louis-Anne de Montmorillon ,  Ludovic Fleury ,  Pascale Nouchi

发明人： Pierre Sillard ,  Louis-Anne de Montmorillon ,  Ludovic Fleury ,  Pascale Nouchi

IPC分类号： G02B626

CPC分类号： G02B6/02009 ,  G02B6/02261 ,  G02B6/03644

摘要： An optical fiber for compensating chromatic dispersion of a positive chromatic dispersion optical fiber has at a wavelength of 1 550 nm a chromatic dispersion less than −40 ps/(nm.km), a ratio between the chromatic dispersion and the chromatic dispersion slope in the range from 50 nm to 230 nm, an effective area greater than or equal to 12 &mgr;m2 and curvature losses less than or equal to 0.05 dB. It is used for in-line compensation of cumulative chromatic dispersion in a positive chromatic dispersion line fiber. A fiber optic transmission system is also disclosed using a fiber of this kind to compensate the cumulative chromatic dispersion in the line fiber.

摘要翻译： 用于补偿正色散光纤的色散的光纤在波长为1 550nm时的色散小于-40ps /（nm.km），色散与色散斜率之比在 范围为50nm至230nm，有效面积大于或等于12mum2，曲率损耗小于或等于0.05dB。 用于在正色散线光纤中的累积色散的在线补偿。 还公开了使用这种光纤来补偿线路光纤中的累积色散的光纤传输系统。

公开(公告)号：US07187824B2

公开(公告)日：2007-03-06

申请号：US10620369

申请日：2003-07-17

申请人： Ludovic Fleury ,  Pierre Sillard ,  Alain Bertaina ,  Florent Beaumont ,  Maxine Gorlier ,  Louis-Anne de Montmorillon ,  Pascale Nouchi ,  Lionel Expert

发明人： Ludovic Fleury ,  Pierre Sillard ,  Alain Bertaina ,  Florent Beaumont ,  Maxine Gorlier ,  Louis-Anne de Montmorillon ,  Pascale Nouchi ,  Lionel Expert

IPC分类号： G02B6/42 ,  H04J14/02

CPC分类号： G02B6/03644 ,  G02B6/02223 ,  G02B6/02261 ,  G02B6/29377 ,  H04B10/2525

摘要： The invention relates to methods of producing and improving an optical transmission line comprising the combination of a line optical fiber and an original or modified module for compensating the chromatic dispersion of said line optical fiber. The modified compensation module is a module for compensating chromatic dispersion of a line optical fiber (1) in a plurality of contiguous and non-overlapping spectral bands each covering at least 30 nanometers, the module including a structure (9) carrying a plurality of submodules (4, 8) at least one of which is separable from the structure (9), which are disposed in series, which are interconnected by one or more connections (6) identifiable to the naked eye without optical measurement and accessible from the exterior without damaging the module, and each of which includes a support to which is fixed at least one optical fiber (2, 7) for compensating chromatic dispersion, at least one optical fiber (2) of said plurality of compensation optical fibers (2, 7) having a compensation ratio from 0.9 to 1.1 for the center wavelength of one of said spectral bands, and at least two submodules (4, 8) having compensation optical fibers (2, 7) of different kinds.

摘要翻译： 本发明涉及生产和改进光传输线路的方法，该光传输线路包括线光纤和用于补偿所述线光纤的色散的原始或修改的模块的组合。 修改的补偿模块是用于补偿多个邻近和非重叠的光谱带中的线光纤（1）的色散的模块，每个光谱带覆盖至少30纳米，该模块包括承载多个子模块的结构（9） （4,8），其中的至少一个与结构（9）分离，所述结构（9）被串联布置，所述结构（9）通过一个或多个可识别为肉眼的连接（6）互连，而不进行光学测量并且可从外部访问而没有 模块，其中每个支撑件固定有用于补偿色散的至少一个光纤（2,7），所述多个补偿光纤（2,7）中的至少一个光纤（2） 对于所述光谱带之一的中心波长具有0.9至1.1的补偿比，以及具有不同种类的补偿光纤（2,7）的至少两个子模块（4,8）。

公开(公告)号：US06904216B2

公开(公告)日：2005-06-07

申请号：US10340689

申请日：2003-01-13

申请人： Florent Beaumont ,  Maxime Gorlier ,  Pierre Sillard ,  Ludovic Fleury ,  Louis-Anne de Montmorillon ,  Pascale Nouchi

发明人： Florent Beaumont ,  Maxime Gorlier ,  Pierre Sillard ,  Ludovic Fleury ,  Louis-Anne de Montmorillon ,  Pascale Nouchi

IPC分类号： G02B6/036 ,  H04J14/00 ,  G02B6/22

CPC分类号： G02B6/02019 ,  G02B6/02009 ,  G02B6/02223 ,  G02B6/02242 ,  G02B6/02271 ,  G02B6/0228 ,  G02B6/03611 ,  G02B6/03688

摘要： The invention proposes an optical fiber presenting a reference index profile having more than six steps. At a wavelength of 1550 nm it presents chromatic dispersion that is positive, and a ratio of the square of effective area over chromatic dispersion slope that is greater than 100,000 μm4.nm2.km/ps. The invention makes it possible to improve the propagation characteristics of prior art fibers by optimizing index profile. It can be implemented using conventional techniques for building up preforms by VAD or by MCVD.

摘要翻译： 本发明提出了一种具有超过六个步骤的参考折射率分布的光纤。 在1550nm的波长处，其呈现为正的色散，并且有效面积相对于色散斜率的平方比大于100,000μm2nm / > .km / ps。 本发明可以通过优化折射率分布来改善现有技术光纤的传播特性。 它可以使用常规技术来实现，用于通过VAD或MCVD来建立预制件。

公开(公告)号：US06904213B2

公开(公告)日：2005-06-07

申请号：US10136297

申请日：2002-05-02

申请人： Ludovic Fleury ,  Louis-Anne de Montmorillon ,  Florent Beaumont ,  Pierre Sillard ,  Maxime Gorlier ,  Pascale Nouchi ,  Jean-Florent Campion ,  Christine Labatut

发明人： Ludovic Fleury ,  Louis-Anne de Montmorillon ,  Florent Beaumont ,  Pierre Sillard ,  Maxime Gorlier ,  Pascale Nouchi ,  Jean-Florent Campion ,  Christine Labatut

IPC分类号： C03B37/012 ,  C03B37/018 ,  G02B6/02 ,  G02B6/036

CPC分类号： C03B37/01892 ,  C03B37/01205 ,  C03B2201/12 ,  G02B6/02 ,  G02B6/02019 ,  G02B6/02242 ,  G02B6/02266 ,  G02B6/023 ,  G02B6/03688 ,  G02B6/03694

摘要： The invention provides a step index optical fiber which presents cladding having an index lower than the index of silica and a core with an index higher than the index of silica. The fiber is obtained by drawing a preform made by chemical vapor deposition using a deposition tube of index lower than the index of silica. Inner cladding of index substantially equal to the index of the deposition tube, and then a core of index higher than the index of the inner cladding are deposited in succession therein. The invention makes it possible to obtain a fiber having a large effective area, reduced attenuation, and suitable for being fabricated at low cost by chemical vapor deposition.

摘要翻译： 本发明提供了一种步进折射率光纤，其具有指数低于二氧化硅指数的包层和指数高于二氧化硅指数的芯。 通过使用指数低于二氧化硅指数的沉积管拉伸由化学气相沉积制成的预制件来获得纤维。 内包层的折射率基本上等于沉积管的折射率，然后连续地沉积高于内包层的折射率的折射率的芯。 本发明可以获得具有大的有效面积，减小的衰减并且适于通过化学气相沉积以低成本制造的纤维。

公开(公告)号：US06628873B1

公开(公告)日：2003-09-30

申请号：US09722059

申请日：2000-11-27

申请人： Pierre Sillard ,  Louis-Anne de Montmorillon ,  Ludovic Fleury ,  Pascale Nouchi

发明人： Pierre Sillard ,  Louis-Anne de Montmorillon ,  Ludovic Fleury ,  Pascale Nouchi

IPC分类号： G02B602

CPC分类号： G02B6/02014 ,  G02B6/02271 ,  G02B6/0228 ,  G02B6/03644

摘要： The present invention relates to an in-cable monomode optical fiber comprising an optical core surrounded by optical cladding, said optical core presenting an index profile constituted by a stepped central part, surrounded by an intermediate zone of refractive index less than that of said central part, itself surrounded by an annular zone having refractive index less than that of said central part and greater than that of said intermediate zone, said fiber having, for a wavelength of 1550 nm, a chromatic dispersion slope in the range 0 to 0.1 ps/nm2·km, said fiber being characterized in that it further presents the following features for a wavelength of 1550 nm: an effective surface area greater than or equal to 60 &mgr;m2, a chromatic dispersion in the range 3 ps/(nm·km) to 14 ps/(nm·km), and a ratio between the effective surface area and the chromatic dispersion slope greater than 900 &mgr;m2·nm2·km/ps.

摘要翻译： 本发明涉及一种包含由光学包层围绕的光学核心的光纤内单模光纤，所述光纤芯呈现由阶梯状中心部分构成的折射率分布，由折射率小于所述中心部分的折射率中间区域包围 本身被折射率小于所述中心部分的折射率的环形区域包围，并且大于所述中间区域的环形区域，所述光纤对于波长为1550nm具有在0至0.1ps / nm范围内的色散斜率 所述光纤的特征在于其进一步具有1550nm波长的以下特征：有效表面积大于或等于60μm2，色散在3ps /（ nm.km）至14ps /（nm.km），并且有效表面积与色散斜率之比大于900mum.2nm .2nm / km。

公开(公告)号：US06574407B2

公开(公告)日：2003-06-03

申请号：US09975959

申请日：2001-10-15

申请人： Pierre Sillard ,  Maxime Gorlier ,  Louis-Anne de Montmorillon ,  Ludovic Fleury ,  Florent Beaumont ,  Pascale Nouchi

发明人： Pierre Sillard ,  Maxime Gorlier ,  Louis-Anne de Montmorillon ,  Ludovic Fleury ,  Florent Beaumont ,  Pascale Nouchi

IPC分类号： G02B602

CPC分类号： H04B10/2525 ,  G02B6/02261 ,  G02B6/0228 ,  G02B6/0281 ,  G02B6/03644 ,  G02B6/29377

摘要： The invention proposes providing an optical fiber transmission system with a dispersion compensating fiber 12l to 12n to compensate the chromatic dispersion and chromatic dispersion slope of the line fiber 6l to 6n; the dispersion compensating fiber satisfies the following criteria: C g C g ′ × 1 1 + C cum / ( L g · C g ′ · Δ ⁢   ⁢ λ ) ≤ C C ′ ≤ C g C g ′ × 1 1 - C cum / ( L g · C g ′ · Δ ⁢   ⁢ λ ) ( 1 ) &LeftBracketingBar; C ′ C ′′ &RightBracketingBar; ≥ Max ⁡ ( Δ ⁢   ⁢ λ 2 × ( C · C g ′ C ′ · C g × ( 1 ± C cum L g · C g ′ · Δ ⁢   ⁢ λ ) - 1 ) - 1 ) ( 2 ) where C, C′ et C″ are the chromatic dispersion, the chromatic dispersion slope and the first derivative of the chromatic dispersion slope of the dispersion compensating fiber, Cg and C′g are the chromatic dispersion and the chromatic dispersion slope of the line fiber, Ccum is the upper limit of the modulus of the cumulative chromatic dispersion in the transmission system, Lg is the length of a line fiber section, and &Dgr;&lgr; is half the bandwidth of the transmission system. The invention also proposes optical fibers verifying the above criteria and suitable for compensating the chromatic dispersion of step index or dispersion shifted line fiber. The proposed criteria compensate chromatic dispersion and chromatic dispersion slope in wideband transmission systems, e.g. in C band and L band transmission systems, for wavelengths from 1530 to 1620 nm.

摘要翻译： 本发明提供一种具有色散补偿光纤12l至12n的光纤传输系统，以补偿线路光纤161至6n的色散和色散斜率; 色散补偿光纤满足以下标准：其中C，C'和C“是色散，色散补偿光纤的色散斜率和色散斜率的一阶导数Cg和C'g是色度 色散和色散斜率，Ccum是传输系统中累积色散的模数的上限，Lg是线光纤部分的长度，DELTAlambd是传输系统带宽的一半。 本发明还提出了验证上述标准并适用于补偿阶跃折射率或色散位移线光纤的色散的光纤。所提出的准则补偿宽带传输系统中的色散和色散斜率，例如 在C波段和L波段传输系统中，对于1530至1620nm的波长。

公开(公告)号：US06668120B2

公开(公告)日：2003-12-23

申请号：US09976012

申请日：2001-10-15

申请人： Pierre Sillard ,  Maxime Gorlier ,  Louis-Anne de Montmorillon ,  Ludovic Fleury ,  Florent Beaumont ,  Pascale Nouchi

发明人： Pierre Sillard ,  Maxime Gorlier ,  Louis-Anne de Montmorillon ,  Ludovic Fleury ,  Florent Beaumont ,  Pascale Nouchi

IPC分类号： G02B602

CPC分类号： G02B6/02261 ,  G02B6/0281 ,  G02B6/03644 ,  G02B6/29377 ,  H04B10/2525

摘要： A chromatic dispersion-compensating fiber adapted to compensate the chromatic dispersion of an SMF or an NZ-DSF having positive chromatic dispersion presents chromatic dispersion which is negative and greater than or equal to −150 ps/(nm.km) at a wavelength of 1550 nm, and a theoretical cutoff wavelength longer than 1800 nm. At 1550 nm, the fiber presents a ratio of chromatic dispersion over chromatic dispersion slope lying in the range 30 nm to 500 nm. The fiber can present a rectangle or a trapezium profile together with a buried trench and a ring. It can be used in a line or in a module to compensate the chromatic dispersion and the chromatic dispersion slope in transmission systems in which the line fiber is an SMF or an NZ-DSF having positive chromatic dispersion.

公开(公告)号：US06643438B1

公开(公告)日：2003-11-04

申请号：US09649095

申请日：2000-08-28

申请人： Pierre Sillard ,  Louis-Anne de Montmorillon ,  Ludovic Fleury ,  Pascale Nouchi

发明人： Pierre Sillard ,  Louis-Anne de Montmorillon ,  Ludovic Fleury ,  Pascale Nouchi

IPC分类号： G02B626

CPC分类号： G02B6/02009 ,  G02B6/02261 ,  G02B6/03644

摘要： An optical fiber is disclosed for compensating the chromatic dispersion of on optical fiber with positive chromatic dispersion advantageously has, at a wavelength of 1 550 nm, a chromatic dispersion less than −40 ps/(nm.km), or even less than −50 ps/(nm.km), a ratio between the chromatic dispersion and the chromatic dispersion slope from 50 nm to 230 nm, an effective surfaced area greater than 12 &mgr;m2 and curvature losses less than or equal to 0.05 dB. It is used for in-line compensation of cumulative chromatic dispersion in a line fiber with positive chromatic dispersion. Also disclosed is a fiber optic transmission system using a fiber of the above kind to compensate cumulative chromatic dispersion in the line fiber.

摘要翻译： 公开了一种用于补偿具有正色散的光纤上的色散的光纤，有利地在波长为1 550nm处的色散小于-40ps /（nm.km），或甚至小于-50 ps /（nm.km），色散和色散斜率之间的比例为50nm至230nm，有效表面积大于12mum 2，曲率损耗小于或等于0.05dB。 用于具有正色散的线光纤中的累积色散的在线补偿。 还公开了使用上述光纤的光纤传输系统来补偿线路光纤中的累积色散。