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    OPTICAL FIBER FOR METROPOLITAN AND ACCESS NETWORK SYSTEMS
    3.
    发明公开
    OPTICAL FIBER FOR METROPOLITAN AND ACCESS NETWORK SYSTEMS 有权
    光纤，用于INNERSTÄDTISCHE-与接入网系统

    公开(公告)号：EP1141754A1

    公开(公告)日：2001-10-10

    申请号：EP99967943.4

    申请日：1999-12-15

    申请人： PIRELLI CAVI E SISTEMI S.p.A.

    发明人： SARCHI, Davide ,  ROBA, Giacomo, Stefano

    IPC分类号： G02B6/16

    CPC分类号： G02B6/02014 ,  G02B6/02223 ,  G02B6/02238 ,  G02B6/02271 ,  G02B6/0285 ,  G02B6/03605 ,  G02B6/03611 ,  G02B6/03622 ,  G02B6/03644 ,  G02B6/29377

    摘要： An optical transmission fiber for use in a metropolitan or access network is disclosed. The transmission line includes a fiber being single mode at a first operating wavelength of around 1310 nm and a second operating wavelength of around 1550 nm. The dispersion of the fiber is negative at one of the first and second operating wavelengths and positive at the other of the first and second operating wavelengths, with an absolute value of between about 5 ps/nm/km and 15 ps/nm/km. The fiber also has a zero dispersion wavelength that is located between the first and second operating wavelengths, and an effective area at a wavelength around 1550 nm greater than about 60 νm2. The cabled fiber has a cutoff wavelength less than about 1300 nm. The fiber allows wavelength division multiplexing (WDM) operation in both the bands (1310 nm and 1550 nm) by reducing nonlinear effects such as four-wave mixing (FWM).

    FIBER OPTICS
    6.
    发明公开
    FIBER OPTICS 审中-公开
    光纤

    公开(公告)号：EP1672396A4

    公开(公告)日：2007-05-09

    申请号：EP04771203

    申请日：2004-08-04

    申请人： SUMITOMO ELECTRIC INDUSTRIES

    发明人： SASAOKA E ,  YAMAMOTO Y

    IPC分类号： G02B6/26 ,  G02B6/02

    CPC分类号： G02B6/02 ,  C03B37/01248 ,  C03C3/06 ,  C03C13/04 ,  G02B6/02004 ,  G02B6/02223 ,  G02B6/02242 ,  G02B6/02266 ,  G02B6/02285 ,  G02B6/26

    摘要： Fiber optics applicable to optical communication in not only 1.3 mum wavelength band but 1.55 mum wavelength band as a transmission medium in a WDM optical communication system capable of transmitting a multi-channel signal light to enable a signal transmission in a broader band. The fiber optics mainly consist of quartz glass and are provided with a core area along a specified axis and a clad area surrounding the core area. The fiber optics with such a structure have, as typical optical characteristics, a cable cutoff wavelength of up to 1260 nm, a transmission loss of up to 0.32 dB/km at a wavelength of 1310 nm, and an OH group-caused loss increase amount of up to 0.3 dB/km at a wavelength of 1380 nm.

    OPTICAL FIBER WITH VERY HIGH NEGATIVE DISPERSION SLOPE
    7.
    发明公开
    OPTICAL FIBER WITH VERY HIGH NEGATIVE DISPERSION SLOPE 审中-公开
    具有非常高的负色散斜率光纤

    公开(公告)号：EP1368682A2

    公开(公告)日：2003-12-10

    申请号：EP01988244.8

    申请日：2001-10-31

    申请人： CORNING INCORPORATED

    发明人： SRIKANT, V

    IPC分类号： G02B6/16 ,  H04B10/18

    CPC分类号： G02B6/02009 ,  G02B6/02223 ,  G02B6/02261 ,  G02B6/0228 ,  G02B6/0286 ,  G02B6/03644 ,  H04B10/25253

    摘要： A dispersion slope compensating optical waveguide, such as a fiber, having a high negative dispersion slope (i.e. a dispersion slope in the range of -2 ps/nm2-km to -40ps/nm2- km) is provided. The optical ps/waveguide comprises a core region and a clad layer. The core region further comprises a first region and a second region surrounding the first region. The width of the second region is sufficient to confine electromagnetic radiation within a selected wavelength range to substantially only the core region. Thus, bending loss in the waveguide is substantially reduced. The negative dispersion slope of the dispersion slope compensating optical waveguide can be used in conjunction with a dispersion compensating optical waveguide as a dual optical waveguide to compensate both the dispersion and dispersion slope of a transmission waveguide. An optical span and an optical transmission system incorporating the dual optical waveguide is also provided.

    OPTICAL FIBER AND OPTICAL TRANSMISSION SYSTEM INCLUDING THE SAME
    9.
    发明公开
    OPTICAL FIBER AND OPTICAL TRANSMISSION SYSTEM INCLUDING THE SAME 审中-公开
    OPTISCHE FASER UND OPTISCHESÜBERTRAGUNGSSYSTEMMIT DIESER FASER

    公开(公告)号：EP1146358A1

    公开(公告)日：2001-10-17

    申请号：EP99972744.9

    申请日：1999-11-26

    申请人： Sumitomo Electric Industries, Ltd.

    发明人： Kato, Takatoshi, Yokohama Works ,  Sasaoka, Eisuke, Yokohama Works ,  Tanaka, Shigeru, Yokohama Works

    IPC分类号： G02B6/16

    CPC分类号： G02B6/036 ,  G02B6/02019 ,  G02B6/02223 ,  G02B6/02242 ,  G02B6/02271 ,  G02B6/0281 ,  G02B6/03611 ,  G02B6/03627 ,  G02B6/03633 ,  G02B6/03644 ,  G02B6/0365 ,  G02B6/03666

    摘要： The present invention relates to an optical fiber which enables favorable optical communications in 1.3- µ m and 1.55- µ m wavelength bands, and an optical transmission system including the same. The optical fiber according to the present invention has only one zero-dispersion wavelength within a wavelength range of 1.20 µ m to 1.60 µ m, the zero-dispersion wavelength existing within a wavelength range of 1.37 µ m to 1.50 µ m, and has a positive dispersion slope at the zero-dispersion wavelength, thereby enabling favorable optical communications utilizing each signal light in the 1.3- µ m and 1.55- µ m wavelength bands sandwiching the zero-dispersion wavelength.

    摘要翻译： 本发明涉及能够在1.3μm和1.55μm波长带中实现良好的光通信的光纤，以及包括该光纤的光传输系统。 根据本发明的光纤在1.20μm至1.60μm的波长范围内仅具有一个零色散波长，零色散波长存在于1.37μm至1.50μm的波长范围内，并且具有 在零色散波长处具有正色散斜率，从而使得利用夹着零色散波长的1.3μm和1.55μm波长带中的每个信号光进行良好的光通信。

    Large effective area single mode optical waveguide
    10.
    发明公开
    Large effective area single mode optical waveguide 失效
    Monomode-Lichtwellenleiter mit grosser effektiverQuerschnittsfläche

    公开(公告)号：EP0779524A3

    公开(公告)日：1998-04-29

    申请号：EP96119852.0

    申请日：1996-12-11

    申请人： CORNING INCORPORATED

    发明人： Liu, Yanming, Corning Incorporated

    IPC分类号： G02B6/16 ,  G02B6/22

    CPC分类号： G02B6/03611 ,  G02B6/02 ,  G02B6/02019 ,  G02B6/02223 ,  G02B6/0281 ,  G02B6/03633

    摘要： Disclosed is a single mode optical waveguide fiber which limits nonlinear effects at both the 1300 nm window and the 1550 nm window of operations as a result of its large effective area. Examples of core region refractive index profiles which yield the required properties are a modified step index profile and profiles which have a maximum Δ % which is spaced apart from the centerline of the waveguide fiber.

    摘要翻译： 公开了在1300nm窗口和1550nm操作窗口处限制非线性效应的单模光纤光纤。 产生所需性质的芯区折射率分布的实例是修改的阶跃折射率分布和具有与波导纤维的中心线间隔开的最大DELTA％的轮廓。 根据本发明，改进的阶跃折射率分布导致两个波长处的非线性有效面积增加。