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公开(公告)号：US5166940A
公开(公告)日：1992-11-24
申请号：US710766
申请日：1991-06-04
IPC分类号： H01S3/067
CPC分类号： H01S3/0675
摘要： A fiber optic laser includes a fiber optic element, and a Bragg grating means in the fiber optic element and defined by a periodic variation in the index of refraction of the element to enhance the narrow band response of the laser and/or increase the loss of unwanted frequencies. A method of making the fiber laser is also disclosed.
摘要翻译： 光纤激光器包括光纤元件和光纤元件中的布拉格光栅装置，并且由元件的折射率的周期性变化定义，以增强激光器的窄带响应和/或增加损耗 不想要的频率。 还公开了制造光纤激光器的方法。
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公开(公告)号：US5042896A
公开(公告)日：1991-08-27
申请号：US575318
申请日：1990-08-30
申请人： Robert P. Dahlgren
发明人： Robert P. Dahlgren
CPC分类号： G02B6/274 , G02B6/2773 , G02B6/283 , G02B6/2843
摘要： An optical element includes a polarization maintaining fiber, and an Indium film on a lapped region of the fiber that selectively couples light of one polarization out of the fiber. The film bonds to a coupling half block or cover plate, providing an hermetic seal about the fiber coupling region. Polarizers, polarizing couplers, polarization beamsplitters, and single mode resonant fiber ring constructions are described.
摘要翻译： 光学元件包括偏振保持光纤，并且在光纤的重叠区域上的铟膜选择性地将一个极化的光从纤维中耦合出来。 该膜粘合到耦合半块或盖板上，围绕光纤耦合区域提供气密密封。 描述偏振器，偏振耦合器，偏振分束器和单模共振光纤环结构。
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公开(公告)号：US4883337A
公开(公告)日：1989-11-28
申请号：US237779
申请日：1988-08-29
申请人： Robert P. Dahlgren
发明人： Robert P. Dahlgren
CPC分类号： G02B6/04 , G02B6/4457
摘要： An optical fiber coil is formed by winding successive loops of a fiber in a toroidal helix to form a self-supporting ring. No coilform or adhesives are necessary, resulting in relaxed boundary conditions at the outside of the fiber jacket, and in an overall reduction of thermally-induced strain, as compared to existing coil constructions. One low-stress mounting includes a trellis or spoke-like frame structure which frictionally supports the coil about its circumference. Another mounting includes a bouyant bead support structure. In a third mounting, a filament suspends the coil from a frame. The coil may be suspended within an isothermal enclosure to further reduce thermal effects.
摘要翻译： 通过将纤维的连续环缠绕在环形螺旋中以形成自支撑环形成光纤线圈。 不需要线圈形或粘合剂，与现有的线圈结构相比，在纤维套管的外侧产生松弛的边界条件，并且与热诱导应变的总体减少相关。 一个低应力安装包括格子或辐条状的框架结构，其围绕其圆周摩擦地支撑线圈。 另一个安装件包括一个布袋支撑结构。 在第三安装中，灯丝将线圈从框架中悬挂下来。 线圈可以悬挂在等温外壳内以进一步减少热效应。
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公开(公告)号：US5170450A
公开(公告)日：1992-12-08
申请号：US679798
申请日：1991-04-03
申请人： Robert P. Dahlgren
发明人： Robert P. Dahlgren
CPC分类号： G01D5/35303 , G02B6/2551 , G02B6/2835 , G02B2006/2839
摘要： A fiber optic coupler and method of manufacture of same in which a single core optical fiber is twisted about a dual core optical fiber and is heated to softening while drawing the melted junction out to form a biconical taper for providing a controlled splitting ratio for light from the single optical fiber into the dual core fiber. In another embodiment two single core fibers are fused to form a dual core fiber without coupling between the cores.
摘要翻译： 一种光纤耦合器及其制造方法，其中单芯光纤围绕双芯光纤扭绞并被加热至软化，同时拉出熔融结以形成双锥形锥形，以提供受控的分光比， 将单根光纤插入双芯光纤。 在另一个实施例中，两个单芯纤维被熔合以形成双芯光纤，而不在芯之间耦合。
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公开(公告)号：US5022735A
公开(公告)日：1991-06-11
申请号：US432980
申请日：1989-11-07
申请人： Robert P. Dahlgren
发明人： Robert P. Dahlgren
CPC分类号： G02B6/2558 , B29C45/0053 , B29C45/14549 , B29C45/1671 , B29C70/74 , G02B6/2835 , B29C2045/0075 , B29C2045/14557 , B29C2045/2671 , B29C45/00
摘要： A spliced fiber is recoated by injection molding a jacket segment over the bare splice region. The dimensions of the recoated fiber approximate those of an undisturbed fiber, and the coating material may be selected to match the physical and mechanical properties of the original fiber jacket. A fixture is shown for performing the recoating.
摘要翻译： 通过在裸露接合区域上注射成型护套段来重新接合拼接的纤维。 重涂纤维的尺寸近似于未受干扰的纤维的尺寸，并且可以选择涂层材料以匹配原始纤维护套的物理和机械性能。 显示用于执行重涂的夹具。
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公开(公告)号：US09115993B1
公开(公告)日：2015-08-25
申请号：US07575319
申请日：1990-08-30
申请人： Robert P. Dahlgren
发明人： Robert P. Dahlgren
IPC分类号： G01C19/72
CPC分类号： G01C19/72 , G01C19/721
摘要： A resonant fiber optic gyro has a tapered polarizer in the ring to produce a single resonant polarization mode. A fused coupler closes the ring and provides inlet and outlet paths, with the entire device fabricated from a single PM fiber, thereby eliminating sources of backscatter and drift. In a preferred embodiment MSR fiber is used, and preferably the fused coupler is fabricated to achieve high finesse and modulation depth with its splitting ratio approximately equal to ring transmission coefficients. Apparatus and methods for forming the polarizer and the coupler are described.
摘要翻译： 谐振光纤陀螺在环中具有渐变偏振器以产生单个谐振偏振模式。 熔断的耦合器闭合环并提供入口和出口路径，整个器件由单个PM光纤制成，从而消除反向散射和漂移的来源。 在优选实施例中，使用MSR光纤，并且优选地，制造熔接耦合器以实现高精细度和调制深度，其分裂比近似等于环传输系数。 描述了用于形成偏振器和耦合器的装置和方法。
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公开(公告)号：US5078465A
公开(公告)日：1992-01-07
申请号：US460637
申请日：1990-01-03
申请人： Robert P. Dahlgren
发明人： Robert P. Dahlgren
CPC分类号： G02B6/2843 , G02B6/2826 , G02B6/2835
摘要： A fiber is mounted with a bare portion extending between two blocks. Four blocks securing a pair of fibers in this manner are mutually aligned by one or more external sleeves, and the fibers are fused and drawn to form a coupler of defined coupling ratio. One sleeve then slides over all four blocks and is bonded to constitute a rigid housing surrounding the fusion region. A preferred coupling block is a grooved D-rod, and different geometries are shown to provide effective PZ and PM fusion couplings, with fiber stress axes aligned with respect to a flat surface of the rod. Portions of the rod provide fiber support and alignment during fusion, and break away from the assembled coupler when complete.
摘要翻译： 纤维安装有在两个块之间延伸的裸露部分。 以这种方式固定一对纤维的四个块通过一个或多个外部套筒相互对准，并且纤维被熔化和拉伸以形成具有限定的耦合比的耦合器。 然后，一个套筒在所有四个块上滑动并且被结合以构成围绕熔融区域的刚性壳体。 优选的联接块是带槽的D型杆，并且示出了不同的几何形状以提供有效的PZ和PM熔融接头，其中纤维应力轴相对于杆的平坦表面对准。 杆的部分在熔化期间提供纤维支撑和对准，并且在完成时从组装的联接器脱离。
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公开(公告)号：US4991922A
公开(公告)日：1991-02-12
申请号：US237778
申请日：1988-08-29
申请人： Robert P. Dahlgren
发明人： Robert P. Dahlgren
CPC分类号： G02B6/3636 , B24B19/226 , G02B6/2826 , G02B6/2843 , G02B6/3684
摘要： In an optical fiber coupling method and coupling assembly, an optical fiber is secured in a support block which is thermally matched to the fiber material. The fibers are coupled within a homogeneous glass medium, resulting in extreme resistance to ambient chemicals, radiation, temperature and forces. A region of the block is optically worked to form a coupling surface surrounding an exposed central portion of the fiber cladding. First and second such blocks are then positioned with their coupling surfaces aligned, and are placed in optical contact with their opposing counterparts. This produces an optical splice of the fibers within a boundary-free thermally matched medium. The optically-contacted assembly, once aligned, is substantially self-securing, and, due to its homogeneity, does not introduce stresses to the fiber as the temperature of the assembly varies. Preferred forms of fiber mounting and methods of enhancing the formation and quality of optical contact are disclosed.
摘要翻译： 在光纤耦合方法和耦合组件中，光纤固定在与纤维材料热匹配的支撑块中。 纤维在均匀的玻璃介质中耦合，导致对环境化学品，辐射，温度和力的极度抵抗。 光学加工块的区域以形成围绕光纤包层的暴露中心部分的耦合表面。 然后将第一和第二这样的块定位成其联接表面对准，并且与其相对的对应物放置成光学接触。 这在无边界的热匹配介质中产生光纤的光纤接头。 光学接触的组件一旦对准，就基本上是自固定的，并且由于其均匀性，随着组件的温度变化，不会对纤维施加应力。 公开了优选的纤维安装形式和增强光学接触的形成和质量的方法。
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公开(公告)号：US4624564A
公开(公告)日：1986-11-25
申请号：US718311
申请日：1985-04-01
申请人： Robert P. Dahlgren
发明人： Robert P. Dahlgren
CPC分类号： G11B5/6005
摘要： A calibration standard simulates predetermined flying characteristics of a magnetic head for calibrating flying height testers. The standard comprises a substrate having a reflective layer supported thereon. A transparent layer is disposed over the reflective layer so that the reflective layer is disposed at a predetermined angle to a surface of the transparent layer, the predetermined angle representative of a predetermined flying angle of a head over a disk, the transparent layer having a thickness representative of a predetermined flying height of a head over a disk. A process for manufacturing and calibrating the calibration standard is also described.
摘要翻译： 校准标准模拟用于校准飞行高度测试仪的磁头的预定飞行特性。 标准包括其上支撑有反射层的基板。 透明层设置在反射层之上，使得反射层以与透明层的表面成预定角度设置，该预定角度表示磁头在盘上的预定飞行角度，透明层具有厚度 代表在磁盘上的磁头的预定飞行高度的代表。 还描述了用于制造和校准校准标准的过程。
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