Optical fiber for improved performance in S-, C- and L-bands
    3.
    发明授权
    Optical fiber for improved performance in S-, C- and L-bands 有权
    用于提高S,C和L波段性能的光纤

    公开(公告)号:US07164833B2

    公开(公告)日:2007-01-16

    申请号:US10670013

    申请日:2003-09-24

    IPC分类号: G02B6/02 H01S3/30

    摘要: An improved optical fiber design has been found to exhibit a relatively low attenuation at the wavelength of 1385 nm (the “water peak”), allowing for Raman amplification to be efficient and effective at wavelengths in the S-band range of 1460 to 1530 nm. An ultra-dry process is used to mate an inner core rod (core plus surrounding trench) with a cladding tube (ring region plus cladding layers) and provide a water peak loss on the order of 0.325 dB/km. The low water peak is combined with appropriate dispersion values and zero dispersion wavelength to form a fiber that supports transmission and Raman amplification in the S-, C- and L-bands of interest for optical transmission systems.

    摘要翻译: 已经发现改进的光纤设计在1385nm波长(“水峰”)处呈现相当低的衰减,允许拉曼放大在1460至1530nm的S波段范围内的波长下有效和有效 。 使用超干法将内芯棒(芯加周围沟槽)与包层管(环区加覆层)配合,并提供大约0.325 dB / km的水峰值损耗。 将低水峰与适当的色散值和零色散波长组合以形成支持光传输系统感兴趣的S,C和L带中的透射和拉曼放大的光纤。

    Large-effective-area inverse dispersion compensating fiber, and a transmission line incorporating the same
    4.
    发明授权
    Large-effective-area inverse dispersion compensating fiber, and a transmission line incorporating the same 有权
    大面积反向色散补偿光纤,以及包含该光纤的传输线

    公开(公告)号:US06959137B2

    公开(公告)日:2005-10-25

    申请号:US10459038

    申请日:2003-06-11

    摘要: An inverse dispersion fiber having a large effective area and a transmission system that incorporates the fiber for providing dispersion and dispersion slope compensation in a transmission fiber. The large-effective-area inverse dispersion optical fiber (IDF) has a negative dispersion and a negative dispersion slope. The effective area, Aeff, of the IDF preferably is greater than approximately 31 micrometers squared (μm2) at a transmission wavelength of approximately 1550 nm. The large-effective-area IDF is suitable for use with super-large-effective-area (SLA) transmission fiber 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 long-haul terrestrial systems. These nonlinear effects are inversely related to the effective area of the fiber (i.e., nonlinearities˜1/Aeff). 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 of the present invention has very desirable transmission properties. The present invention also provides a transmission system comprising at least one of the large-effective-area IDF optical fibers of the present invention. Furthermore, Aeff can be made large without having to increase the ratio, Ra, of the diameter of the core to the diameter of the trench region.

    摘要翻译: 具有大的有效面积的反向色散光纤和包含用于在传输光纤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)具有负色散和负色散斜率。 在大约1550nm的透射波长下,IDF的有效面积优选大于约31微米平方(mum-SUP> 2)。 大面积IDF适用于超大面积(SLA)传输光纤,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,这在跨洋和 长途陆地系统。 这些非线性效应与光纤的有效面积成反比(即,非线性〜1 / A)。 因此,光纤的有效面积的增加转化为非线性相互作用的减小,这增加了带宽能力并限制了信号衰减。 此外,本发明的大面积IDF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光纤中的至少一个的传输系统。 而且,不必增加芯的直径与沟槽区域的直径的比值,就可以使得A n eff大。

    Low loss optical fiber designs for confining optical power to low-doped regions
    6.
    发明授权
    Low loss optical fiber designs for confining optical power to low-doped regions 有权
    低损耗光纤设计用于将光功率限制在低掺杂区域

    公开(公告)号:US08073301B2

    公开(公告)日:2011-12-06

    申请号:US12381302

    申请日:2009-03-10

    IPC分类号: G02B6/036

    摘要: The specification describes an improved optical fiber produced by a hybrid VAD/MCVD process. The core of the fiber is produced using VAD and the inner cladding layer has a depressed index and is produced using MCVD. In preferred embodiments, the optical power envelope is essentially entirely contained in VAD produced core material and the MCVD produced depressed index cladding material. Optical loss is minimized by confining most of the optical power to the VAD core where OH presence is low, as well as by maximizing the optical power in the un-doped silica region. The MCVD substrate tube material is essentially devoid of optical power.

    摘要翻译: 本说明书描述了通过混合VAD / MCVD工艺生产的改进的光纤。 使用VAD制造纤维的芯,并且内包层具有凹陷指数,并且使用MCVD制造。 在优选实施例中,光功率包层基本上完全包含在VAD生产的芯材料中,并且MCVD产生凹陷的折射率包层材料。 通过将大部分光功率限制在其中OH存在低的VAD核心以及通过使未掺杂二氧化硅区域中的光功率最大化来将光损耗最小化。 MCVD衬底管材料基本上没有光学功率。

    Low loss optical fiber designs and methods for their manufacture
    7.
    发明授权
    Low loss optical fiber designs and methods for their manufacture 有权
    低损耗光纤设计及其制造方法

    公开(公告)号:US08295668B2

    公开(公告)日:2012-10-23

    申请号:US13317073

    申请日:2011-10-07

    IPC分类号: G02B6/036

    摘要: The specification describes an improved optical fiber produced by a hybrid VAD/MCVD process. The core of the fiber is produced using VAD and the inner cladding layer has a depressed index and is produced using MCVD. In preferred embodiments, the optical power envelope is essentially entirely contained in VAD produced core material and the MCVD produced depressed index cladding material. Optical loss is minimized by confining most of the optical power to the VAD core where OH presence is low, as well as by maximizing the optical power in the un-doped silica region. The MCVD substrate tube material is essentially devoid of optical power.

    摘要翻译: 本说明书描述了通过混合VAD / MCVD工艺生产的改进的光纤。 使用VAD制造纤维的芯,并且内包层具有凹陷指数,并且使用MCVD制造。 在优选实施例中,光功率包层基本上完全包含在VAD生产的芯材料中,并且MCVD产生凹陷的折射率包层材料。 通过将大部分光功率限制在其中OH存在低的VAD核心以及通过使未掺杂二氧化硅区域中的光功率最大化来将光损耗最小化。 MCVD衬底管材料基本上没有光学功率。

    Low loss optical fiber designs for confining optical power to low-doped regions
    9.
    发明授权
    Low loss optical fiber designs for confining optical power to low-doped regions 有权
    低损耗光纤设计用于将光功率限制在低掺杂区域

    公开(公告)号:US08315493B2

    公开(公告)日:2012-11-20

    申请号:US13317476

    申请日:2011-10-19

    IPC分类号: G02B6/036

    摘要: The specification describes an improved optical fiber produced by a hybrid VAD/MCVD process. The core of the fiber is produced using VAD and the inner cladding layer has a depressed index and is produced using MCVD. In preferred embodiments, the optical power envelope is essentially entirely contained in VAD produced core material and the MCVD produced depressed index cladding material. Optical loss is minimized by confining most of the optical power to the VAD core where OH presence is low, as well as by maximizing the optical power in the un-doped silica region. The MCVD substrate tube material is essentially devoid of optical power.

    摘要翻译: 本说明书描述了通过混合VAD / MCVD工艺生产的改进的光纤。 使用VAD制造纤维的芯,并且内包层具有凹陷指数,并且使用MCVD制造。 在优选实施例中,光功率包层基本上完全包含在VAD生产的芯材料中,并且MCVD产生凹陷的折射率包层材料。 通过将大部分光功率限制在其中OH存在低的VAD核心以及通过使未掺杂二氧化硅区域中的光功率最大化来将光损耗最小化。 MCVD衬底管材料基本上没有光学功率。