Polarization preserving optical fiber and method of manufacturing
    1.
    发明授权
    Polarization preserving optical fiber and method of manufacturing 失效
    极化保护光纤及其制造方法

    公开(公告)号:US4824455A

    公开(公告)日:1989-04-25

    申请号:US43565

    申请日:1987-04-28

    Abstract: An improved polarization preserving birefringent fiber optic member is provided having cross-sectional circular cladding and core members of soft glasses. A metallic coating of an approximately circular configuration, that is offset from the axis of the core and cladding members, is provided with sufficient thickness to provide an anisotropic variation in compressional strain on the core member to create the anisotropy of the refracted index of the core member for preserving polarization characteristics. The optical fiber can be formed by heating a mechanical composite of a core rod and cladding tube, drawing the core and cladding to form a fused fiber and transporting the drawn fiber through a coating bath to provide the variation in thickness.

    Abstract translation: 提供了一种改进的偏振保留双折射光纤构件,其具有横截面圆形包层和软玻璃的核心构件。 具有大致圆形构造的金属涂层,其从芯部和包层部件的轴线偏移,具有足够的厚度以提供芯部件上的压缩应变的各向异性变化,以产生芯的折射率的各向异性 保持极化特性的成员。 光纤可以通过加热芯棒和包覆管的机械复合材料,拉伸芯和包层以形成熔融纤维并将拉伸的纤维传送通过涂层浴以形成厚度变化来形成。

    Polarization preserving optical fiber and method of manufacturing
    2.
    发明授权
    Polarization preserving optical fiber and method of manufacturing 失效
    极化保护光纤及其制造方法

    公开(公告)号:US4904052A

    公开(公告)日:1990-02-27

    申请号:US300386

    申请日:1989-01-23

    Abstract: An improved polarization preserving birefringent fiber optic member is provided having cross-sectional circular cladding and core members of soft glasses. A metallic coating of an approximately circular configuration, that is offset from the axis of the core and cladding members, is provided with sufficient thickness to provide an anisotropic variation in compressional strain on the core member to create the anisotropy of the refracted index of the core member for preserving polarization characteristics. The optical fiber can be formed by heating a mechanical composite of a core rod and cladding tube, drawing the core and cladding to form a fused fiber and transporting the drawn fiber through a coating bath to provide the variation in thickness.

    Abstract translation: 提供了一种改进的偏振保留双折射光纤构件,其具有横截面圆形包层和软玻璃的核心构件。 具有大致圆形构造的金属涂层,其从芯部和包层部件的轴线偏移,具有足够的厚度以提供芯部件上的压缩应变的各向异性变化,以产生芯的折射率的各向异性 保持极化特性的成员。 光纤可以通过加热芯棒和包覆管的机械复合材料,拉伸芯和包层以形成熔融纤维并将拉伸的纤维传送通过涂层浴以形成厚度变化来形成。

    Method and apparatus for testing optical fibers
    3.
    发明授权
    Method and apparatus for testing optical fibers 失效
    光纤测试方法和设备

    公开(公告)号:US5207106A

    公开(公告)日:1993-05-04

    申请号:US787173

    申请日:1991-11-04

    Abstract: An optical fiber (22) is tested for payout properties by supporting it on a payout support (24 ), preferably in the form of a hollow frustum of a cone, and attaching an unsupported end (26 ) of the optical fiber (22) to a projectile (42) that is thereafter propelled rapidly by expanding gas. The expanding gas is preferably generated explosively or by pressurizing the rearward end of the stationary projectile (42) and then releasing the projectile (42). A pneumatic gun (40) suitable for such testing has a barrel (44) sufficiently large to receive the projectile (42), a latching mechanism (60) that releasably engages the projectile (42), a closure (50) at the rearward end of the barrel (44) with a bore (58) therethrough concentric with the axis of the barrel (44) through which the optical fiber (22) passes and is drawn. The pneumatic gun (40) further includes a gas reservoir (48) that supplies a pressurized gas to the back side of the projectile (42). In operation of the pneumatic gun (40), the gas pressure is raised to a desired level with the projectile (42) latched, and then the latching mechanism (60) is released to permit the projectile (42), and attached optical fiber (22), to move rapidly forward as the gas expands.

    Abstract translation: 通过将光纤(22)支撑在支撑支撑件(24)上,优选地以圆锥形的中空截头锥体的形式,并且将光纤(22)的未支撑的端部(26)附接到 然后通过膨胀气体迅速地推进射弹(42)。 膨胀气体优选爆炸生成或通过对固定射弹(42)的后端加压,然后释放射弹(42)。 适合于这种测试的气动枪(40)具有足够大以容纳射弹(42)的枪管(44),可释放地接合射弹(42)的闩锁机构(60),在后端的封闭件 所述筒体(44)具有与所述筒体(44)的轴线同心的孔(58),所述光纤(22)穿过并被拉出。 气动枪(40)还包括一个气体储存器(48),其向喷射器(42)的后侧提供加压气体。 在气动枪(40)的操作中,随着弹丸(42)的锁定,气压升高至所需的水平,然后释放闩锁机构(60)以允许弹丸(42)和附接的光纤 22),随着气体膨胀而迅速向前移动。

    Fabrication of rods of uniform high density from powders of refractory
materials
    4.
    发明授权
    Fabrication of rods of uniform high density from powders of refractory materials 失效
    从耐火材料粉末制造均匀高密度的棒材

    公开(公告)号:US4857249A

    公开(公告)日:1989-08-15

    申请号:US233920

    申请日:1988-08-16

    CPC classification number: C04B35/5611 C04B35/645 C30B13/00 C30B29/36

    Abstract: Cylindrical rods of titanium carbide or other refractory material with uniform, high density are prepared by hot pressing plates from powders of the material, with a uniaxial pressing pressure applied to the broad faces of the plate. Bars of square cross section are then cut from the plate and machined to cylindrical rods. The process is particularly suited to the preparation of refractory material preforms to be used in single crystal growth by the float zone method. Titanium carbide rods having a highly uniform density of about 96% that of the theoretical maximum can be readily prepared and then grown into titanium carbide crystals.

    Abstract translation: 通过从材料的粉末热压板制备具有均匀,高密度的碳化钛或其他耐火材料的圆柱棒,其中单轴压力施加到板的宽面上。 然后从板上切割方形横截面的棒,并加工成圆柱形棒。 该方法特别适用于通过浮法法制备用于单晶生长的耐火材料预制件。 可以容易地制备具有理论最大值的约96%的高度均匀密度的碳化钛棒,然后生长成碳化钛晶体。

    Optical fiber laser fusion splicer

    公开(公告)号:US5339380A

    公开(公告)日:1994-08-16

    申请号:US155609

    申请日:1993-11-19

    CPC classification number: G02B6/2555 G02B6/2551 G02B6/2558 G02B6/3862

    Abstract: An optical fiber fusion splicer apparatus (20) comprises a laser power source that produces a laser beam (32) having a laser beam axis (26). The laser power source includes a laser (22), a shutter (28) that controllably blocks and passes the laser beam, and an optical system (30) that expands the diameter of the laser beam. A parabolic mirror (34) has its axis coincident with the laser beam axis (26) and a bore (48) therethrough coincident with the laser beam axis (26). Optical fiber clamps (42, 46) hold the two optical fibers (40, 44) with their axes coincident with the laser beam axis (26) and their ends (62, 64) at the focal point (38) of the parabolic mirror (34). A sensor (82) measures the power reaching the optical fiber ends (62, 64) at the focal point (38) of the parabolic mirror (34), and a controller (72) controls the power level of the laser (22) responsive to the power measured by the sensor. The alignment of the optical fibers (40, 44) is sensed, preferably by a reflective device (74) that measures their internal reflectance or a video camera (68) that images their peripheries, and the optical fiber ends (62, 64) are aligned responsively.

    Orientation control of float-zone grown TiC crystals
    6.
    发明授权
    Orientation control of float-zone grown TiC crystals 失效
    浮选生长TiC晶体的取向控制

    公开(公告)号:US5069743A

    公开(公告)日:1991-12-03

    申请号:US508137

    申请日:1990-04-11

    CPC classification number: C30B13/00 C30B29/36

    Abstract: A process is provided for the controlled growth of titanium carbide. Essentially, relatively fast, or low temperature growth, favors growth of single crystals having (100) orientation, while relatively slow, or high temperature growth, favors single crystals having (111) orientation. The process obviates the need for any seed crystals and permits growth of rods having diameters exceeding 1 cm.

    Abstract translation: 提供了用于碳化钛的受控生长的方法。 基本上相对较快或低温生长有利于具有(100)取向的单晶的生长,同时相对较慢或高温生长,有利于具有(111)取向的单晶。 该方法消除了任何晶种的需要,并允许直径超过1cm的棒的生长。

    Airborne towed aerobody employing an expendable towing/deployment
mechanism
    7.
    发明授权
    Airborne towed aerobody employing an expendable towing/deployment mechanism 失效
    机载牵引航空器采用消耗性牵引/部署机制

    公开(公告)号:US5603470A

    公开(公告)日:1997-02-18

    申请号:US371259

    申请日:1995-01-11

    CPC classification number: B64D3/02 B63B21/60 B64F1/04

    Abstract: A launching and regulation system that incorporates an expendable towing and deployment mechanism for use with a towed aerobody that provides for launching and controlled tow line payout between the towed aerobody and a towing vehicle. The system comprises a housing, a nonrotating spool disposed in the housing, and a tow line wound around the spool that is coupled between the aerobody and the vehicle. The tow line preferably comprises a photonic, fiber optic, link. The launching mechanism comprises a plurality of impulse cartridges for deploying the aerobody and severing the tow line at a predetermined time. A spring piston is disposed inside a wedge-shaped tube that confines expanding gasses within the tube that are generated by an impulse cartridge and moves the spring piston to launch the aerobody. The regulation mechanism may comprise a mechanical system or adhesive resin system. The mechanical system comprises a rotatable wedge-shaped tube, and the tow line is wrapped around it. A rotatable mechanical regulator is slidably coupled to the wedge-shaped tube. The regulator rotates with the tube and move transversely along the length of the tube as the tow line unwinds. A brake mechanism and a brake drum are provided to control payout of the tow line. The adhesive resin system comprises an adhesive resin coating disposed on the tow line that has an adhesion coefficient that permits it to peel off of the spool at a predetermined rate. Either regulation system provides the ability to control the rate at which the tow line comes off of the spool such that tow line tension is regulated during deployment. A severing mechanism is provided for severing the tow line using an impulse cartridge.

    Abstract translation: 一个发射和调节系统,其中包含一个可拖动的牵引和部署机构,用于牵引的航空器,用于在被牵引的航空器和牵引车之间发射和控制牵引线。 该系统包括壳体,设置在壳体中的非旋转线轴以及缠绕在线轴上的牵引线,该绳索联接在航空器和车辆之间。 拖线优选地包括光子,光纤,链路。 发射机构包括用于部署航空器并在预定时间切断拖绳的多个冲击筒。 弹簧活塞设置在楔形管内部,其将由脉冲盒产生的膨胀气体限制在管内,并移动弹簧活塞以发射航空器。 调节机构可以包括机械系统或粘合剂树脂系统。 机械系统包括可旋转的楔形管,并且牵引线缠绕在其周围。 可旋转的机械调节器可滑动地联接到楔形管。 调节器随着管道的旋转,并沿着管线展开而沿管的长度横向移动。 提供制动机构和制动鼓以控制牵引线的支付。 粘合树脂系统包括设置在牵引线上的粘合树脂涂层,其具有允许以预定速率从卷轴剥离的粘附系数。 调节系统提供了控制拖绳从卷轴脱离的速率的能力,使得在展开期间调节牵引线张力。 提供了一种切断机构,用于使用脉冲盒来切断拖绳。

    Multiply coated metallic clad fiber optical waveguide
    8.
    发明授权
    Multiply coated metallic clad fiber optical waveguide 失效
    多层涂层金属包层光纤光波导

    公开(公告)号:US4418984A

    公开(公告)日:1983-12-06

    申请号:US203762

    申请日:1980-11-03

    CPC classification number: G02B6/4402 C03C25/107 C03C25/108

    Abstract: There is disclosed a metallic clad glass fiber optical waveguide suitable for use as a high-strength optical transmission line, e.g., for high capacity communications systems and for sensors operating at high temperature. At least two metallic claddings or coatings are formed on the glass waveguide structure, which comprises a core and glass cladding, by coating the glass fiber with at least one of the metallic coatings as it emerges from the furnace with a metal or alloy. The first metal or alloy employed is one that is substantially chemically inert with respect to the material comprising the glass fiber at the deposition temperature during coating of the metal or alloy onto the glass fiber. The second metallic coating may be of the same composition as the first, in order to repair pinholes or to increase the thickness. Alternatively, the second metallic coating may be of a different composition than the first in order to provide the waveguide with mechanical properties that are different than either layer alone could provide. Specific electrical and magnetic properties may also be provided. The metallic coatings prevent chemical or mechanical damage to the glass surface. A plastic coating is optionally provided for additional protection of the metallic surface.

    Abstract translation: 公开了一种适合用作高强度光传输线的金属包层玻璃纤维光波导,例如用于大容量通信系统和用于在高温下运行的传感器。 在玻璃波导结构上形成至少两个金属包层或涂层,玻璃波导结构包括芯和玻璃包层,当玻璃纤维与金属或合金从炉中出来时,用至少一个金属涂层涂覆玻璃纤维。 所用的第一种金属或合金是在将金属或合金涂覆在玻璃纤维上时在沉积温度下相对于包含玻璃纤维的材料基本上化学惰性的金属或合金。 第二金属涂层可以具有与第一金属涂层相同的组成,以便修复针孔或增加厚度。 或者,第二金属涂层可以具有与第一金属涂层不同的组成,以便为波导提供与单独的层不同的机械特性。 也可以提供特定的电磁特性。 金属涂层防止玻璃表面的化学或机械损伤。 任选地提供塑料涂层用于金属表面的额外保护。

    Alloys for liquid metal ion sources
    9.
    发明授权
    Alloys for liquid metal ion sources 失效
    液态金属离子源合金

    公开(公告)号:US4367429A

    公开(公告)日:1983-01-04

    申请号:US203294

    申请日:1980-11-03

    CPC classification number: H01J27/26 H01J37/08 H01J2237/0805

    Abstract: Alloys suitable for use in liquid metal field ionization ion sources are provided. Such sources include an anode electrode for supporting an ion emitter comprising an alloy in the liquid state. The source further comprises means for generating an ionizing electric field and a reservoir for the liquid metal, ions of which are to be emitted by the source.The alloys are selected from the group consisting of (a) metal-metalloid alloys comprising about 10 to 30 atom percent of at least one metalloid element, the balance at least one transition metal element, (b) early transition-late transition alloys comprising about 30 to 85 atom percent of at least one early transition metal, the balance at least one late transition metal, and (c) Group II alloys comprising about 35 to 80 atom percent of at least one Group II element, the balance at least one metal element.Ions generated in liquid metal ion sources form a high brightness ion beam, which permits focusing a beam of emitted ions to a submicrometer spot. The ions may be used to alter material properties by ion implantation such as to dope semiconductors, to form ohmic contacts, to improve wear and corrosion resistance in metal surfaces and by sputter etching thin films such as metals, dielectrics and semiconductors.

    Abstract translation: 提供了适用于液态金属场离子源的合金。 这种源包括用于支撑包含处于液态的合金的离子发射体的阳极。 该源还包括用于产生电离电场的装置和用于液体金属的储存器,其离子将由源发射。 合金选自(a)包含约10至30原子%的至少一种准金属元素的金属 - 类金属合金,余量至少一种过渡金属元素,(b)早期过渡 - 后转变合金,其包含约 30至85原子%的至少一种早期过渡金属,余量至少一种后过渡金属,和(c)包含约35至80原子%的至少一种II族元素的II族合金,余量至少一种金属 元件。 在液态金属离子源中产生的离子形成高亮度离子束,其允许将发射的离子束聚焦到亚微米点。 离子可用于通过离子注入来改变材料性质,例如掺杂半导体,以形成欧姆接触,以改善金属表面的耐磨性和耐腐蚀性,并通过溅射蚀刻诸如金属,电介质和半导体的薄膜。

    Mechanical tow line regulation system for an airborne towed aerobody
    10.
    发明授权
    Mechanical tow line regulation system for an airborne towed aerobody 失效
    空中牵引航空器的机械牵引线调节系统

    公开(公告)号:US5605306A

    公开(公告)日:1997-02-25

    申请号:US371308

    申请日:1995-01-11

    CPC classification number: B64D3/02 B63B21/60 B64F1/08

    Abstract: A mechanical regulation system for controlling tow line payout between the aerobody and a towing vehicle. The system comprises a housing, a nonrotating spool, and a tow line wound around the spool that is coupled between the aerobody and the vehicle. The regulation portion of the present system comprises a rotatable wedge-shaped tube, having the tow line wrapped around it. A rotatable mechanical regulator is slidably coupled to the wedge-shaped tube. The regulator is adapted to rotate with the tube and move transversely along the length of the tube as the tow line is removed from the spool. A brake mechanism is provided as part of the regulator, and a brake drum is disposed adjacent the periphery of the regulator that is contacted by the brake mechanism.

    Abstract translation: 用于控制航空器和牵引车之间的牵引线支架的机械调节系统。 该系统包括壳体,非旋转滑阀以及围绕线轴缠绕的牵引线,所述牵引线联接在所述航空器和所述车辆之间。 本系统的调节部分包括可旋转的楔形管,其上缠绕有丝线。 可旋转的机械调节器可滑动地联接到楔形管。 调节器适于与管旋转并沿着管的长度沿着管的长度沿着管线从卷轴移除。 提供制动机构作为调节器的一部分,并且制动鼓设置成与制动机构接触的调节器的周边相邻。

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