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    OPTICAL FIBER FOR AMPLIFICATION, AND LASER DEVICE
    1.
    发明公开
    OPTICAL FIBER FOR AMPLIFICATION, AND LASER DEVICE 审中-公开
    用于放大的光纤，以及激光装置

    公开(公告)号：EP3306759A1

    公开(公告)日：2018-04-11

    申请号：EP17817645.9

    申请日：2017-03-06

    申请人： Fujikura Ltd.

    发明人： KITAHARA Rintaro

    IPC分类号： H01S3/067 ,  G02B6/02 ,  G02B6/036 ,  H01S3/10

    CPC分类号： G02B6/03616 ,  G02B6/02 ,  G02B6/036 ,  G02B6/03605 ,  G02B6/03694 ,  H01S3/067 ,  H01S3/10 ,  H01S3/10007

    摘要： An amplification optical fiber 10 according to the present invention includes: a core 11 doped with an active element, through which multi-mode light can propagate; inner cladding 12 surrounding the core 11 and having a refractive index lower than that of the core 11; and outer cladding 13 surrounding the inner cladding 12 and having a refractive index lower than that of the inner cladding 12, wherein the inner cladding 12 has a polygonal outline in a cross section perpendicular to the longitudinal direction, and the inner cladding 12 has a permanent twist applied by turning around the central axis of the core 11.

    摘要翻译： 根据本发明的放大光纤10包括：掺杂有有源元件的芯11，多模光可以通过该有源元件传播; 围绕芯11并具有比芯11的折射率低的折射率的内包层12; 以及围绕内包层12并具有比内包层12的折射率低的折射率的外包层13，其中内包层12在垂直于纵向的横截面中具有多边形轮廓，并且内包层12具有永久的 通过绕芯11的中心轴线转动而施加扭转。

    AMPLIFYING OPTICAL FIBER AND OPTICAL FIBER AMPLIFIER USING SAME
    3.
    发明公开
    AMPLIFYING OPTICAL FIBER AND OPTICAL FIBER AMPLIFIER USING SAME 审中-公开
    GLASFASERVERSTÄRKUNGUNDGLASFASERVERSTÄRKERDAMIT

    公开(公告)号：EP2503654A1

    公开(公告)日：2012-09-26

    申请号：EP11744805.0

    申请日：2011-02-21

    申请人： FUJIKURA LTD.

    发明人： TAKANASHI Tomohiro

    IPC分类号： H01S3/06 ,  G02B6/02 ,  G02B6/036

    CPC分类号： H01S3/094007 ,  G02B6/03605 ,  G02B6/0365 ,  H01S3/06704 ,  H01S3/06729

    摘要： To be provided is an amplifying optical fiber allowing for efficient absorption of pumping light by an active element therein, and an optical fiber amplifier using the amplifying optical fiber.
    An amplifying optical fiber (20) includes a core (21) doped with an active element, a cladding (22) covering the core (21), and an outer cladding (23) covering the cladding (22). The cladding (22) meets a relationship of 0.92 ≤ r/R ≤ 0.97 where the cladding (22) has a polygonal outer shape in cross section, and the outer shape has an inscribed circle of a diameter r and a circumscribed circle of a diameter R.

    摘要翻译： 提供一种放大光纤，其能够有效地吸收泵浦光中的有源元件，以及使用放大光纤的光纤放大器。 放大光纤（20）包括掺杂有有源元件的芯（21），覆盖芯（21）的包层（22）和覆盖包层（22）的外包层（23）。 包层（22）满足0.92‰¤r/ R‰‰0.97的关系，其中包层（22）的横截面为多边形外形，外形为内径为r的内切圆和外接圆 直径R.

    TRANSVERSE CLOSED-LOOP RESONATOR
    5.
    发明公开
    TRANSVERSE CLOSED-LOOP RESONATOR 审中-公开
    闭环CROSS RUNNING谐振器

    公开(公告)号：EP1797468A1

    公开(公告)日：2007-06-20

    申请号：EP05807617.5

    申请日：2005-10-04

    申请人： Corning Incorporated

    发明人： GARNER, Sean M ,  SUTHERLAND, James S ,  BHAGAVATULA, Venkata A

    IPC分类号： G02B6/12 ,  G02B6/122 ,  G02B6/26

    CPC分类号： G02B6/29332 ,  G02B6/03605 ,  G02B6/12007 ,  G02B6/29319 ,  G02B6/29334 ,  G02B6/29335 ,  G02B6/29341 ,  G02B6/29356

    摘要： A transverse closed-loop fiber resonator (10) includes an inner cladding (102) having a surface (300) peripherally forming a closed-loop shape for confining light to the surface (300). The inner cladding has a first diameter thickness (104) and a first index of refraction profile in a cross-sectional portion of the transverse closed-loop fiber resonator (10). A ringed-core (120) corresponding to the closed-loop shape is disposed on the corresponding surface of the inner cladding (102). The ringed-core (120) has a second thickness (124) of material thinner than the first diameter thickness (104), and a second index of refraction profile greater than the first index of the inner cladding by an index delta in the cross-sectional portion of the transverse closed-loop fiber resonator such that the ringed-core can guide light within the ringed-core traversely around the closed-loop shape.

    APPARATUS AND METHOD FOR THERMALLY TUNING AN OPTICAL AMPLIFIER
    6.
    发明公开
    APPARATUS AND METHOD FOR THERMALLY TUNING AN OPTICAL AMPLIFIER 审中-公开
    用于热调谐光学放大器的装置和方法

    公开(公告)号：EP1436651A1

    公开(公告)日：2004-07-14

    申请号：EP02744864.6

    申请日：2002-07-11

    申请人： CORNING INCORPORATED

    发明人： DEJNEKA, Matthew J. ,  SAMSON, Bryce N.

    IPC分类号： G02B6/02 ,  H04B10/12

    CPC分类号： H01S3/06754 ,  G02B6/03605 ,  G02B6/03694 ,  H01S3/042 ,  H01S3/06704 ,  H01S3/10007 ,  H01S3/1301 ,  H01S3/1616 ,  H01S2301/04

    摘要： An apparatus (60) and method for thermally tuning an optical amplifier comprises an optical waveguide (63) doped with a fluorescent material, a thermal device (65) for either heating or cooling the optical waveguide, and a pump light (61) for exciting the fluorescent material. The apparatus shapes, shifts, and/or flattens the gain curves of the doped optical amplifier. Thulium doped fiber is cooled to shift the gain curve into the C-band. Erbium doped fiber is heated to flatten the gain curve in the C-band and is cooled to shift the gain curve above the L-band. The apparatus similarly shapes the gain curves of other fluorescent materials. The thermal device comprises three types of optical cooling devices. The apparatus is a component in communications systems, lasers, medical lasers and the like. The method comprises either heating or cooling optical waveguides doped with fluorescent materials to achieve the desired shaping, shifting, and flattening of the gain curves.

    摘要翻译： 一种用于对光学放大器进行热调谐的装置（60）和方法，包括掺杂有荧光材料的光波导（63），用于加热或冷却光波导的热装置（65）以及用于激励 荧光材料。 该设备对掺杂光放大器的增益曲线进行整形，移位和/或平坦化。 Th掺杂的光纤被冷却以将增益曲线转换为C带。 铒掺杂光纤被加热以使C带中的增益曲线变平并且被冷却以将增益曲线移到L带之上。 该设备类似地形成其他荧光材料的增益曲线。 热敏装置包括三种类型的光学冷却装置。 该设备是通信系统，激光器，医疗激光器等中的组件。 该方法包括加热或冷却掺杂有荧光材料的光波导，以实现增益曲线的所需成形，移动和平坦化。

    OPTICAL FIBER FOR METROPOLITAN AND ACCESS NETWORK SYSTEMS
    7.
    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).

    Partially detached core optical waveguide
    9.
    发明公开
    Partially detached core optical waveguide 失效
    已经剥落光波导的核心。

    公开(公告)号：EP0622648A3

    公开(公告)日：1995-08-23

    申请号：EP94105675.6

    申请日：1994-04-13

    申请人： Corning Incorporated

    发明人： Berkey, George Edward

    IPC分类号： G02B6/16 ,  G02B6/22 ,  C03B37/00 ,  G02B6/10 ,  C03B37/012 ,  C03B37/027

    CPC分类号： G02B6/03638 ,  C03B37/01211 ,  C03B37/01217 ,  C03B37/027 ,  C03B37/02709 ,  C03B2203/10 ,  C03B2203/14 ,  C03B2203/30 ,  C03B2203/32 ,  C03B2205/10 ,  G02B6/02 ,  G02B6/03605 ,  G02B6/03622 ,  G02B6/105

    摘要： Purpose : An optical waveguide fiber which is made substantially bend resistant. Constitution : A core having a central region with a higher index of refraction than an integral surrounding region is joined for a segment of its periphery to a clad member, so as to leave a gap between core and cladding. Bend resistance improvement begins when a relatively small fraction, for example, about half, of the core member periphery is detached. A detachment percentage between about 50% and 99.9% of the core member periphery should be achieved, with the preferred range between about 95% and 99.9%. Waveguides include single mode, multimode and polarization maintaining waveguides. Additional core isolation from external forces is provided by an additional semi-detached cladding layer. Only a segment of the periphery of core member (6) is fused to clad (8) along the length of waveguide (5). Also, only a segment of the periphery of clad (8) is fused to clad (10) along the length of waveguide (5). The gaps (7) and (9), which are present along the length of waveguide (5), serve to provide a double isolation of core member (6) from external forces. That is, the stress fields set up in clad layer (10) are only partially transmitted to clad (8), because of the limited contact between the two clads. Likewise, stress fields experienced by clad (8) cannot be fully transmitted to core member (6) due to the limited area of contact between these two waveguide parts. The area of attachment between core member (6) and clad (8) may occur at any part of the inside surface of clad (8). Also, the orientation of the area of attachment between clad (8) and clad (10) may occur at any part of the inside surface of clad (10). In general, the area of attachment of clad (8) to clad (10) and the area of attachment of core member (6) and clad (8) do not influence one another.