Method for preparing an optical fibre, optical fibre and use of such
    3.
    发明授权
    Method for preparing an optical fibre, optical fibre and use of such 有权
    制备光纤,光纤的方法及其用途

    公开(公告)号:US07171093B2

    公开(公告)日:2007-01-30

    申请号:US10480374

    申请日:2002-06-11

    IPC分类号: G02B6/02 G02B6/34 G02B6/36

    摘要: Methods for coating an optical fiber with optical fiber Bragg grating (FBG) with a hermetic coating, particularly a coating of carbon, are employed to avoid ingress of gases, vapors or fluids in the ambient environment. This ingress can be from water or hydrogen, which can diffuse in the fiber glass and cause deviation/drift in the measured Bragg measurements. Bragg gratings that maintain the grating strength at temperatures in excess of 1000° C. are used and can be formed by heating the fiber above 1000° C. in a chamber with a reactive gas that produces deposition of carbon.

    摘要翻译: 使用具有光纤布拉格光栅(FBG)的封装涂层,特别是碳涂层的光纤的方法用于避免在周围环境中进入气体,蒸汽或流体。 这种入口可以来自水或氢,它们可以在玻璃纤维中扩散,并在测量的布拉格测量中引起偏差/漂移。 使用在超过1000℃的温度下保持光栅强度的布拉格光栅,并且可以通过在具有产生碳沉积的反应性气体的室中将高于1000℃的纤维加热而形成。

    Fiber bragg grating fabrication method
    4.
    发明授权
    Fiber bragg grating fabrication method 失效
    光纤布拉格光栅制作方法

    公开(公告)号:US06832025B2

    公开(公告)日:2004-12-14

    申请号:US10183681

    申请日:2002-06-28

    IPC分类号: G02B6124

    摘要: In an optical waveguide fabricated to provide spectral filtering by a periodic mode coupling between the core and cladding the spectral profile may be shifted in wavelength if the core or cladding is photosensitive. This is especially useful in the case of long period gratings used as gain flattening filters, as a relatively low dose of radiation, compared with that typically required to fabricate a Reflection Bragg Grating in the same fiber, provides a sufficient shift for filter tuning purposes. Subsequent thermal exposure can stabilize the filter performance over the expected temperature range, while exposure to higher temperature reverses the radiation induced shift.

    摘要翻译: 在制造为通过芯和包层之间的周期性模式耦合提供频谱滤波的光波导中,如果芯或包层是光敏的,则光谱轮廓可以在波长上移位。 与在相同光纤中制造反射布拉格光栅通常需要的相比,作为相对低的辐射剂量的长周期光栅用作增益平坦化滤光器的情况尤其有用,为滤光器调谐目的提供了足够的偏移。 随后的热暴露可以将过滤器性能稳定在预期的温度范围内,而暴露于较高温度则会反转辐射诱发的位移。

    Sensitized optical fiber method and article
    5.
    发明申请
    Sensitized optical fiber method and article 失效
    敏化光纤方法和文章

    公开(公告)号:US20040120643A1

    公开(公告)日:2004-06-24

    申请号:US10325582

    申请日:2002-12-19

    IPC分类号: G02B006/34

    摘要: A refractive index grating comprising an optical fiber having at least one radiation-sensitized portion, in a longitudinal section of the optical fiber, containing a periodic variation of refractive index. The refractive index grating has an initial magnitude that changes no more than two percent after conditioning at a temperature of 300null C. for a time of ten minutes.

    摘要翻译: 折射率光栅,包括在光纤的纵向截面中具有至少一个辐射敏化部分的光纤,其包含折射率的周期性变化。 折射率光栅的初始幅度在300℃的温度下调节10分钟之后变化不超过2%。

    Apparatus and method for filament tensioning
    6.
    发明申请
    Apparatus and method for filament tensioning 失效
    灯丝张力的装置和方法

    公开(公告)号:US20020176680A1

    公开(公告)日:2002-11-28

    申请号:US09804766

    申请日:2001-03-13

    IPC分类号: G02B006/00

    摘要: A method and article for applying tension to a filament using a filament tensioning apparatus comprising a tensioning holder including at least one support bar. A first carriage is mounted at a first location on a support bar. The first carriage has a first clamp and a voice coil mounted thereon for movement relative to a support bar. A second carriage mounted at a second location on a support bar provides a separation between the first location and the second location. The second carriage has a second clamp and a load cell mounted thereon for movement relative to a support bar. A guide bar extends from the voice coil for contact with the load cell to adjust the separation of the first location from the second location to apply tension to a filament held between the first clamp and the second clamp.

    摘要翻译: 一种用于使用包括至少一个支撑杆的张紧保持器的细丝张紧装置向长丝施加张力的方法和制品。 第一滑架安装在支撑杆上的第一位置。 第一滑架具有安装在其上的第一夹具和音圈,用于相对于支撑杆运动。 安装在支撑杆上的第二位置的第二台架提供了第一位置和第二位置之间的间隔。 第二滑架具有安装在其上的第二夹具和负载单元,用于相对于支撑杆运动。 引导杆从音圈延伸以与测力传感器接触以调节第一位置与第二位置的分离,以将张力施加到保持在第一夹具和第二夹具之间的细丝。

    Method for manufacturing optical fiber grating, optical fiber grating, and fiber laser
    9.
    发明授权
    Method for manufacturing optical fiber grating, optical fiber grating, and fiber laser 有权
    制造光纤光栅,光纤光栅和光纤激光的方法

    公开(公告)号:US08509271B2

    公开(公告)日:2013-08-13

    申请号:US13628942

    申请日:2012-09-27

    申请人: Fujikura Ltd.

    IPC分类号: H01S3/30 H01S3/08 G02B6/34

    摘要: A method for manufacturing an optical fiber grating that includes first and second gratings that configure an optical resonator, the method including: forming the first grating by radiating ultraviolet light to an optical fiber so that a irradiation intensity Z satisfies the following Equation 1: Z≦(ΔλS/x+0.04556Y2+1.2225Y)/(0.05625Y2+1.6125Y) . . . Equation 1, where, Z represents an irradiation intensity (mJ/mm2) of the ultraviolet light, ΔλS represents the maximum shift amount of a reflection center wavelength of the first grating that is allowed as long as reflection wavelengths of the first grating and second grating overlap each other, x represents a shift amount of the reflection center wavelength per temperature change of 1° C. (nm/° C.) in the first grating, and Y represents an intensity (W) of the wave-guided light.

    摘要翻译: 一种制造光纤光栅的方法,该光纤光栅包括配置光学谐振器的第一和第二光栅,该方法包括:通过向光纤辐射紫外光形成第一光栅,使得照射强度Z满足下列等式1:Z @ (DeltalambdaS / x + 0.04556Y2 + 1.2225Y)/(0.05625Y2 + 1.6125Y)。 的。 的。 等式1,其中,Z表示紫外线的照射强度(mJ / mm2),Deltal表示只要第一光栅和第二光栅的反射波长允许的第一光栅的反射中心波长的最大偏移量 重叠,x表示第一光栅中每1℃温度变化(nm /℃)的反射中心波长的偏移量,Y表示波导光的强度(W)。

    HIGH DENSITY FIBER OPTIC ACOUSTIC ARRAY
    10.
    发明申请
    HIGH DENSITY FIBER OPTIC ACOUSTIC ARRAY 审中-公开
    高密度纤维光学声学阵列

    公开(公告)号:US20090092351A1

    公开(公告)日:2009-04-09

    申请号:US12096010

    申请日:2006-12-08

    IPC分类号: G02B6/02 G02B6/00

    摘要: A method for optimizing the architecture of a linear sensor array using WDM-TDM technology and stabilizing the reflectivity spectral profile of the fiber Bragg gratings of the sensors against the influence of environmental factors such as pressure and temperature is provided. The method includes stripping a portion of the foamed coating on the exterior of an optical fiber in the region of the fiber Bragg grating to thin the coating in the region of the grating. After the coating is stripped and the optical fiber cleaned, the area of stripped fiber is recoated with an unvoided plastic.

    摘要翻译: 提供了使用WDM-TDM技术来优化线性传感器阵列的架构并且稳定传感器的光纤布拉格光栅的反射光谱曲线的方法,以抵抗环境因素如压力和温度的影响。 该方法包括在光纤布拉格光栅的区域中剥离光纤外部的一部分泡沫涂层,以使光栅区域中的涂层变薄。 在剥离涂层并清洁光纤后,剥离的纤维的面积用未形成的塑料重新涂覆。