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    Temperature insensitive long-period fiber grating devices
    5.
    发明公开
    Temperature insensitive long-period fiber grating devices 失效
    Temperaturunempfindliche Fasergittervorrichtungen mit grosser Gitterperiode

    公开(公告)号：EP0767391A2

    公开(公告)日：1997-04-09

    申请号：EP96306970.3

    申请日：1996-09-25

    申请人： AT&T Corp.

    发明人： DiGiovanni, David John ,  Pedrazzani, Janet Renee ,  Judkins, Justin Boyd ,  Vengsarkar, Ashish Madhukar ,  Walker, Kenneth Lee

    IPC分类号： G02B6/16

    CPC分类号： G02B6/0219 ,  G02B6/02095 ,  H01S3/0675 ,  H01S3/10023 ,  H01S2301/04

    摘要： Applicants have determined that the temperature sensitivity of long-period grating devices is due to differential variation with temperature of the refractive indices of the core and cladding. They have further determined that the cladding profile and fiber composition can be redesigned to substantially reduce this differential variation, thereby reducing the temperature sensitivity of long-period gratings of less than 4 nm per 100°C and preferably less than 2 nm per 100°C. This design permits the use of long-period grating devices without temperature control or compensation.

    摘要翻译： 申请人已经确定长周期光栅器件的温度敏感性是由于与芯和包层的折射率的温度的差异变化。 他们进一步确定，可以重新设计包层形状和纤维组成以显着减小该差异变化，从而降低每100℃小于4nm，优选小于2nm / 100℃的长周期光栅的温度敏感性 该设计允许使用长周期光栅器件，无需温度控制或补偿。

    HIGH DENSITY FIBER OPTIC ACOUSTIC ARRAY
    6.
    发明公开
    HIGH DENSITY FIBER OPTIC ACOUSTIC ARRAY 审中-公开
    高密度声光纤阵列

    公开(公告)号：EP1958009A2

    公开(公告)日：2008-08-20

    申请号：EP06846537.6

    申请日：2006-12-08

    申请人： Sabeus, Inc.

    发明人： GOLDNER, Eric, Lee ,  LAM, Leo ,  MARTIN, Graham ,  RYU, Kevin

    IPC分类号： G02B6/00

    CPC分类号： G02B6/02123 ,  G01H9/004 ,  G02B6/02104 ,  G02B6/02171 ,  G02B6/02185 ,  G02B6/0219

    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.

    Optical waveguide grating and production method therefor
    7.
    发明公开
    Optical waveguide grating and production method therefor 失效
    Lichtwellenleitergitter und Verfahren zu dessen Herstellung

    公开(公告)号：EP1882962A2

    公开(公告)日：2008-01-30

    申请号：EP07108921.3

    申请日：1997-04-02

    申请人： FUJIKURA LTD.

    发明人： Shima, Kensuke ,  Nakai, Michihiro ,  Hidaka, Hiroshi ,  Himeno, Kuniharu ,  Okude, Satoshi ,  Wada, Akira ,  Sudoh, Masaaki ,  Sakai, Tetsuya ,  Ienaka, Takuya ,  Yamauchi, Ryozo

    IPC分类号： G02B6/00

    CPC分类号： G02B6/124 ,  G02B6/021 ,  G02B6/0218 ,  G02B6/0219

    摘要： An optical waveguide grating with radiative mode-coupling properties, with exceptional stability and reliability as an optical component, wherein the central wavelength of the rejection band has a low temperature dependence, due to the use of silica glass doped with germanium and boron for the core.
    The rejection bandwidth can be narrowed without increasing the grating length by forming the radiative mode-coupled optical waveguide grating in an optical waveguide wherein the mean relative refractive index difference of the core is greater than that of optical communication waveguides. The rejection can be increased by reducing the occurrence of cases wherein propagation modes of the core coupled to cladding modes once again couple to the core in palnar optical waveguide gratings formed by making periodic changes in the waveguide structure along the direction of propagation of light in an optical waveguide having a cladding with a lower refractive index than the core surrounding the core, by making the thickness of the cladding at least thirteen times the thickness of the core.

    摘要翻译： 具有辐射模耦合特性的光波导光栅，作为光学部件具有出色的稳定性和可靠性，其中由于使用掺杂有锗和硼的石英玻璃作为芯，因此阻带的中心波长具有低的温度依赖性 。 可以通过在光波导中形成辐射模耦合光波导光栅而不增加光栅长度来减小抑制带宽，其中芯的平均相对折射率差大于光通信波导的平均相对折射率差。 可以通过减少与包层模式耦合的芯的传播模式再次耦合到光栅波导光栅中的芯的情况的发生的情况，可以增加抑制，所述光波导光栅通过沿着光的传播方向沿波导结构的周期性变化而形成 光波导具有通过使包层的厚度至少为芯的厚度的十三倍而具有比围绕芯的芯的折射率低的包层的包层。

    Fiber apparatus having improved grating fabrication and performance characteristics
    8.
    发明公开
    Fiber apparatus having improved grating fabrication and performance characteristics 审中-公开
    光纤装置具有改进的光栅制造和性能特征

    公开(公告)号：EP1273938A2

    公开(公告)日：2003-01-08

    申请号：EP02013723.8

    申请日：2002-06-20

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

    发明人： Atkins, Robert Michael ,  Digiovanni, David John ,  Oh, Kyunghwan ,  Reed, William Alfred ,  Westbrook, Paul Stephen ,  Windeler, Robert Scott

    IPC分类号： G02B6/16

    CPC分类号： G02B6/0219 ,  C03C13/04 ,  G02B6/02085 ,  G02B6/02123

    摘要： Embodiments of the invention include a singlemode optical fiber (10) having an antimony (Sb) doped core region (12), a suitable cladding region (14) formed on the core region, and one or more gratings (16) written in the optical fiber. Optical fibers manufactured according to embodiments of the invention provide faster growth of grating strength, higher thermal stability, and longer photosensitive wavelength compared to conventional Ge doped silica optical fibers. The optical fiber is fabricated for applications such as fiber grating applications where the index of the core is modulated by UV radiation. Also, the addition of Sb in the core region of the singlemode optical fiber provides higher temperature (for example, greater than 100° C) applications of fiber gratings and a reduced degradation of the band rejection efficiency. Also, the optical fibers are more conducive to direct and non-destructive grating writing over polymer jackets with a longer photosensitive wavelength in the UV range.

    摘要翻译： 本发明的实施例包括具有锑（Sb）掺杂核心区域（12），形成在核心区域上的合适包覆区域（14）以及写入光学中的一个或多个光栅（16）的单模光纤 纤维。 与传统的Ge掺杂石英光纤相比，根据本发明实施例制造的光纤提供更快的光栅强度增长，更高的热稳定性和更长的光敏波长。 光纤被制造用于诸如光纤光栅应用的应用，其中芯部的折射率由UV辐射调制。 而且，在单模光纤的纤芯区域中添加Sb提供了光纤光栅的较高温度（例如，大于100℃）应用以及降低了带阻效率的降低。 而且，光纤更有利于在UV范围内具有较长光敏波长的聚合物护套上的直接和非破坏性光栅写入。

    Long period optical fiber grating filter
    9.
    发明公开
    Long period optical fiber grating filter 审中-公开
    Glasfasergitterfilter mit langer Periode

    公开(公告)号：EP1139124A2

    公开(公告)日：2001-10-04

    申请号：EP01100523.8

    申请日：2001-01-09

    申请人： SAMSUNG ELECTRONICS CO., LTD.

    发明人： Jang, Ju-Nyung

    IPC分类号： G02B6/16

    CPC分类号： G02B6/0219 ,  G02B6/02095 ,  G02B6/021 ,  G02B6/02209 ,  G02B6/03633 ,  G02B6/0365

    摘要： There is provided a temperature-compensated long period optical fiber grating filter using a multi-cladding structure. In an optical fiber used for the temperature-compensated long period optical fiber grating filter, a plurality of long period fiber gratings are formed periodically in a core and the core is doped with a first dopant to show a positive coupling wavelength shift as temperature increases. An inner cladding is formed around the core and has a refractive index lower than that of the core. An outer cladding is formed around the inner cladding and has a lower refractive index than that of the inner cladding, and is doped with a second dopant to show a negative coupling wavelength shift as the refractive index of the outer cladding is increased with temperature. The positive wavelength shift and the negative wavelength shift are canceled out, thereby compensating temperature.

    摘要翻译： 提供了采用多包层结构的温度补偿长周期光纤光栅滤波器。 在用于温度补偿长周期光纤光栅滤波器的光纤中，在芯中周期性地形成多个长周期光纤光栅，并且芯掺杂有第一掺杂剂以随着温度升高显示正耦合波长偏移。 在芯周围形成内包层，其折射率低于芯的折射率。 外包层形成在内包层周围并且具有比内包层更低的折射率，并且当外包层的折射率随温度升高时，掺杂有第二掺杂剂以示出负耦合波长偏移。 正波长偏移和负波长偏移被抵消，从而补偿温度。

    Optical waveguide grating and production method therefor
    10.
    发明公开
    Optical waveguide grating and production method therefor 失效
    Optische Wellenleiter-Gitter-Anordnung und deren Herstellugsmethode

    公开(公告)号：EP1061386A1

    公开(公告)日：2000-12-20

    申请号：EP00116007.6

    申请日：1997-04-02

    申请人： FUJIKURA LTD.

    发明人： Shima, Kensuke ,  Nakai, Michihiro ,  Hidaka, Hiroshi ,  Himeno, Kuniharu ,  Okude, Satoshi ,  Wada, Akira ,  Sudoh, Masaaki ,  Sakai, Tetsuya ,  Ienaka, Takuya ,  Yamauchi, Ryozo

    IPC分类号： G02B6/16

    CPC分类号： G02B6/124 ,  G02B6/021 ,  G02B6/0218 ,  G02B6/0219

    摘要： An optical waveguide grating with radiative mode-coupling properties, with exceptional stability and reliability as an optical component, wherein the central wavelength of the rejection band has a low temperature dependence. The rejection bandwidth can be narrowed without increasing the grating length by forming the radiative mode-coupled optical waveguide grating in an optical waveguide wherein the mean relative refractive index difference of the core is greater than that of optical communication waveguides.

    摘要翻译： 具有辐射模耦合特性的光波导光栅，作为光学部件具有出色的稳定性和可靠性，其中抑制带的中心波长具有低的温度依赖性。 可以通过在光波导中形成辐射模耦合光波导光栅而不增加光栅长度来减小抑制带宽，其中芯的平均相对折射率差大于光通信波导的平均相对折射率差。