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133 条记录 (耗时 0.03 秒)

    Large mode area fibers by using conversion to higher order modes
    2.
    发明公开
    Large mode area fibers by using conversion to higher order modes 有权
    具有大的点面积的纤维，通过使用转化为高阶模

    公开(公告)号：EP1858128A1

    公开(公告)日：2007-11-21

    申请号：EP06010258.9

    申请日：2006-05-18

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

    发明人： Di Giovanni, David J. ,  Ramachandran, Siddharth

    IPC分类号： H01S3/067 ,  H01S3/094 ,  G02B6/036

    CPC分类号： G02B6/03666 ,  G02B6/02019 ,  G02B6/02023 ,  G02B6/03611 ,  G02B6/0365 ,  H01S3/06729 ,  H01S3/094007 ,  H01S3/094053

    摘要： The specification describes an optical fiber device wherein a lower order mode (LOM) i.e. LP 01 is converted to a higher order mode (HOM) i.e. LP 02 prior to entering the gain section. The gain section is a few mode fiber that supports the HOM. The output from the gain section, i.e. the HOM, may be utilized as is, or converted back to the LOM. With suitable design of the few mode fiber in the gain section of the device, the effective area, Aeff, may be greater than 1600 μm 2 The large mode separation in the gain section reduces mode coupling, allowing greater design freedom and reducing the bend sensitivity of the optical fiber. The fiber designs suitable for the gain section of the devices comprise a core, inner cladding and a trench (down doped region). The inner cladding and the trench regions govern the properties of the higher order mode (LP 02 ).

    摘要翻译： 说明书描述到光纤设备worin低阶模式（LOM），即 LP 01被转换为高阶模（HOM），即 LP 02在进入增益部分。 增益部分是几个模光纤支持HOM一样。 从增益部分，即输出 的HOM中，可以按原样使用，或者转换回LOM。 与在该装置的增益区段的少数时尚纤维的合适的设计中，有效面积而且，Aeff，可以大于1600¼m2中的增益部分中的大模分离减少模式耦合，从而允许更大的设计自由度和降低弯曲敏感性 的光纤。 适合于设备的增益区段的光纤设计包括芯，内包层和一个沟槽（向下掺杂区域）。 内包层和沟槽区管理高阶模（LP 02）的性质。

    Optical fiber filter for suppression of amplified spontaneous emission
    5.
    发明公开
    Optical fiber filter for suppression of amplified spontaneous emission 审中-公开
    用于抑制放大自发辐射的光纤滤波器

    公开(公告)号：EP1722256A3

    公开(公告)日：2006-12-13

    申请号：EP06009572.6

    申请日：2006-05-09

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

    发明人： Bise, Ryan Tyler ,  Fini, John Michael ,  Yan, Man Fei

    IPC分类号： G02B6/02 ,  G02B6/26

    CPC分类号： G02B6/0238 ,  G02B6/02042 ,  G02B6/02347 ,  G02B6/02366 ,  G02B6/03611 ,  G02B6/03644 ,  G02B6/03688 ,  G02B6/105 ,  G02B6/29332

    摘要： An in-line, distributed optical fiber filter comprises a core region (12) with a raised refractive index (with respect to the surrounding cladding material) so as to allow for total internal reflection (TIR) of the desired transmission wavelength(s). One or more raised index features (16) are formed within the cladding region (14) and are configured so as to result in mode mixing between the cladding mode and core mode at determined wavelength(s) to be removed by filtering. The parameters associated with determining the proper core specifications and cladding specifications can be separately determined to provide for enhanced performance in terms of both filtering unwanted signals and propagation of desired communication signals.

    摘要翻译： 在线分布式光纤滤波器包括具有提高的折射率（相对于周围的包层材料）的核心区域（12），以允许期望的传输波长（s）的全内反射（TIR）。 在包层区域（14）内形成一个或多个凸起的折射率特征（16），并且被配置为在通过滤波去除的确定的波长处导致包层模和纤芯模之间的模混合。 可以单独确定与确定适当的核心规格和包层规格相关联的参数，以在过滤不想要的信号和期望的通信信号的传播方面提供增强的性能。

    Optical fiber cable connector system
    6.
    发明公开
    Optical fiber cable connector system 有权
    Verbinderanordnungfürfaseroptische Kabel mit Zugentlastung

    公开(公告)号：EP1491925A1

    公开(公告)日：2004-12-29

    申请号：EP03028287.5

    申请日：2003-12-10

    申请人： FITEL USA CORPORATION (a Delaware Corporation)

    发明人： Miller, Jeffrey ,  Warych, Edward

    IPC分类号： G02B6/38

    CPC分类号： G02B6/3869 ,  G02B6/3887

    摘要： A connector system for terminating an optical fiber cable having a protective outer jacket. The system includes a connector plug and a crimp insert having an axial bore. A distal end of the insert is formed to be joined to a proximal end of the connector plug. A first portion of the insert bore has a diameter corresponding to an outside diameter of the cable jacket. A second portion of the insert bore has a diameter corresponding to an outer diameter of an unjacketed end of the cable. The insert deforms when crimped at axially spaced positions on its periphery, corresponding to the first and the second portions of the insert bore. Thus, both the outer jacket and the unjacketed end of the cable are restrained from axial movement with respect to the joined insert and connector plug.

    摘要翻译： 该系统具有连接器插头（50）和具有轴向孔的压接插入件（30）。 孔的一部分具有相对于电缆护套外径的直径。 孔的另一部分具有相对于电缆的未覆盖端的外径的直径。 当插入件在轴向间隔开的位置处被压接时，插件变形以限制护套和未覆盖端部的轴向移动。

    Large-effective-area inverse dispersion compensating fiber, and transmission line incorporating the same
    7.
    发明公开
    Large-effective-area inverse dispersion compensating fiber, and transmission line incorporating the same 有权
    Kompensations-Glasfaser mitterverser Dispersion und hoher effektiverFläche

    公开(公告)号：EP1486805A1

    公开(公告)日：2004-12-15

    申请号：EP04003795.4

    申请日：2004-02-19

    申请人： FITEL USA CORPORATION (a Delaware Corporation)

    发明人： Kalish, David ,  Peckham, David W. ,  Lingle, Robert Jr. ,  Sun, Yi

    IPC分类号： G02B6/16 ,  G02B6/22

    CPC分类号： G02B6/02009 ,  G02B6/02261 ,  G02B6/03611 ,  G02B6/03688

    摘要： An inverse dispersion fiber (10) having a large effective area and a transmission system that incorporates the fiber for providing dispersion and dispersion slope compensation in a transmission fiber (3). The large-effective-area inverse dispersion optical fiber (IDF) (10) has a negative dispersion and a negative dispersion slope. The effective area, A eff , of the IDF (10) preferably is greater than approximately 31 micrometers squared (µm 2 ) at a transmission wavelength of approximately 1550 nm. The large-effective-area IDF (10) is suitable for use with super-large-effective-area (SLA) transmission fiber (3) for compensating dispersion in the SLA transmission fiber while reducing nonlinear effects between wavelength channels and cabling loss, which is especially advantageous in transoceanic and longhaul terrestrial systems. These nonlinear effects are inversely related to the effective area of the fiber (i.e., nonlinearities ~ 1/A eff ). Thus, an increase in the effective area of the fiber translates into a decrease in nonlinear interactions, which increases bandwidth capabilities and limits signal degradation. Furthermore, the large-effective-area IDF (10) of the present invention has very desirable transmission properties. The present invention also provides a transmission system (1) comprising at least one of the large-effective-area IDF optical fibers (10) of the present invention. Furthermore, A eff can be made large without having to increase the ratio, R a , of the diameter of the core to the diameter of the trench region (52).

    摘要翻译： 具有大的有效面积的反向色散光纤（10）和包含用于在传输光纤（3）中提供色散和色散斜率补偿的光纤的传输系统。 大面积反向色散光纤（IDF）（10）具有负色散和负色散斜率。 在约1550nm的透射波长下，IDF（10）的有效面积Aeff优选大于约31微米平方（μm2）。 大面积IDF（10）适用于超大面积（SLA）传输光纤（3），用于补偿SLA传输光纤中的色散，同时减少波长信道之间的非线性效应和布线损耗， 在跨洋和长途陆地系统中特别有利。 这些非线性效应与光纤的有效面积（即，非线性＆lt; 1 / Aeff）成反比。 因此，纤维的有效面积的增加转化为非线性相互作用的降低，这增加了带宽能力并限制了信号衰减。 此外，本发明的大型有效区域IDF（10）具有非常理想的传输特性。 本发明还提供了包括本发明的大面积有效区域IDF光纤（10）中的至少一个的传输系统（1）。 此外，可以使Aeff变大，而不必增加芯的直径与沟槽区域（52）的直径的比Ra。

    Multiple order PMD compensator for optical fiber transmission system
    8.
    发明公开
    Multiple order PMD compensator for optical fiber transmission system 审中-公开
    Polarisationsmodendispersionkompensator mit verschiedener OrdnungenfürFaseroptischeÜbertragungssystem

    公开(公告)号：EP1480361A2

    公开(公告)日：2004-11-24

    申请号：EP04010953.0

    申请日：2004-05-07

    申请人： FITEL USA CORPORATION (a Delaware Corporation)

    发明人： Nelson, Lynn E.

    IPC分类号： H04B10/18

    CPC分类号： H04B10/2569 ,  G02B6/272 ,  G02B6/278 ,  H04B2210/003

    摘要： In accordance with the invention, an optical fiber transmission system is provided with multiple order PMD compensation to provide enhanced compensation at high bit rates and across a range of frequencies. Specifically, PMD is compensated by a concatenated series of components, each component configured to compensate for the effects of a successively higher order term of a PMD Taylor series approximation. Advantageously, each component comprises a polarization controller and a differential dispersion element of specified order. In an exemplary embodiment, the first order differential dispersion element can be a standard differential group delay (DGD) element. The element of second order can be a differential group-velocity dispersion element, and the third order element can be a differential dispersion slope element. These differential dispersion elements of various orders can be fixed or tunable elements in different embodiments.

    摘要翻译： 根据本发明，光纤传输系统具有多阶PMD补偿，以在高比特率和频率范围内提供增强的补偿。 具体地，PMD由连接的一系列组件补偿，每个组件被配置为补偿PMD泰勒级数逼近的连续更高阶项的影响。 有利地，每个组件包括具有指定顺序的偏振控制器和差分色散元件。 在示例性实施例中，一阶差分色散元素可以是标准差分群延迟（DGD）元素。 第二级元件可以是差分组 - 速度色散元件，并且第三级元件可以是差分色散斜率元件。 在不同实施例中，各种顺序的这些差分色散元件可以是固定的或可调元件。