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19 条记录 (耗时 0.029 秒)

    Cladding-pumped 3-level fiber laser/amplifier
    2.
    发明授权
    Cladding-pumped 3-level fiber laser/amplifier 失效
    包层泵浦3级光纤激光器/放大器

    公开(公告)号：US06836607B2

    公开(公告)日：2004-12-28

    申请号：US09808270

    申请日：2001-03-14

    申请人： Matthew J. Dejneka ,  Adam J. Ellison ,  Dmitri V. Kuksenkov ,  John D. Minelly ,  Carlton M. Truesdale ,  Luis A. Zenteno

    发明人： Matthew J. Dejneka ,  Adam J. Ellison ,  Dmitri V. Kuksenkov ,  John D. Minelly ,  Carlton M. Truesdale ,  Luis A. Zenteno

    IPC分类号： G02B602

    CPC分类号： H01S3/06716 ,  H01S3/0672 ,  H01S3/06729 ,  H01S3/094003 ,  H01S3/094019 ,  H01S3/09415

    摘要： An optically active fiber (30) is disclosed for making a fiber laser (18) or an amplifier (16). This double-clad structured active fiber (30) has a core (34), doped with an optically excitable ion having a three-level transition. The core (34) has a core refractive index and a core cross-sectional area. An inner cladding (32) surrounds the core (34). The inner cladding (32) has an inner cladding refractive index less than the core refractive index, an inner cladding cross-sectional area between 2 and 25 times greater than that of the core cross-sectional area, and an aspect ratio greater than 1.5:1. An outer cladding (36) surrounds the inner cladding (32) and has an outer cladding refractive index less than the inner cladding refractive index.

    摘要翻译： 公开了用于制造光纤激光器（18）或放大器（16）的光学活性光纤（30）。 这种双包层结构的有源光纤（30）具有掺杂有具有三电平转变的光学可激发离子的芯（34）。 芯（34）具有芯折射率和芯横截面积。 内包层（32）围绕芯部（34）。 内包层（32）的内包层折射率小于纤芯折射率，内包层横截面积比芯横截面积大2至25倍，纵横比大于1.5： 1。 外包层（36）围绕内包层（32）并且具有小于内包层折射率的外包层折射率。

    Achromatic fiber optic coupler
    4.
    发明授权
    Achromatic fiber optic coupler 失效
    消色差光纤耦合器

    公开(公告)号：US5011251A

    公开(公告)日：1991-04-30

    申请号：US447808

    申请日：1989-12-08

    申请人： William J. Miller ,  Carlton M. Truesdale ,  David L. Weidman ,  Donald R. Young, Jr.

    发明人： William J. Miller ,  Carlton M. Truesdale ,  David L. Weidman ,  Donald R. Young, Jr.

    IPC分类号： G02B6/28 ,  G02B6/287

    CPC分类号： G02B6/2835 ,  G02B6/2856

    摘要： An achromatic fiber optic coupler of the type wherein first and second single-mode optical fibers, each having a core and a cladding, are fused together along a portion of the lengths thereof to form a coupling region. A matrix glass of lower index than the fiber claddings surrounds the coupling region. The fiber diameters are smaller in the coupling region than in the remainder of the fibers. The refractive index n.sub.2 of the cladding of the first fiber is different from the refractive index n.sub.2 ' of the cladding of the second fiber, the difference between the refractive indices n.sub.2 and n.sub.2 ' being such that the coupler exhibits very little change in coupling ratio with wavelength over a band of wavelengths.

    Three-level air-clad rare-earth doped fiber laser/amplifier
    5.
    发明授权
    Three-level air-clad rare-earth doped fiber laser/amplifier 失效
    三层包覆稀土掺杂光纤激光器/放大器

    公开(公告)号：US06987783B2

    公开(公告)日：2006-01-17

    申请号：US10741211

    申请日：2003-12-19

    申请人： James C. Fajardo ,  Michael T. Gallagher ,  Anping Liu ,  (Ying) Lisa Peng ,  Carlton M. Truesdale ,  Luis A. Zenteno

    发明人： James C. Fajardo ,  Michael T. Gallagher ,  Anping Liu ,  (Ying) Lisa Peng ,  Carlton M. Truesdale ,  Luis A. Zenteno

    IPC分类号： H01S3/30

    CPC分类号： H01S3/063 ,  H01S3/06729 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/094042 ,  H01S3/094069 ,  H01S3/09415 ,  H01S3/2308

    摘要： An optically-active air-clad fiber (30) includes a core (34, 84) that facilitates doping with an ion optically excitable and having a three-level optical transition when pumped at a first end (28) of an optical cavity (46) by a multimode pump source (72) at a pump wavelength (64) for lasing at a signal wavelength (66) different than the pump wavelength (64) at a second end (29) of the optical cavity (46), the core (34, 84) having a refractive index, wherein the core (34, 84) is transformed from the first end to proximate the second end (29) thereof such that the optically-active fiber (30) is multimode at the pump wavelength proximate to the first end (28), and is single-mode at the signal wavelength proximate to the second end (29). An air-clad (36, 86) surrounds at least one portion of the core (34, 84) and has a lower effective refractive index than the refractive index of the core (34, 84).

    摘要翻译： 光学活性的空气包层光纤（30）包括：芯（34,84），其有助于掺杂有可激发的离子，并且当在光腔（46）的第一端（28）处泵浦时具有三电平的光学跃迁 ）通过泵浦波长（64）处的多模泵浦源（72），以在光腔（46）的第二端（29）处以不同于泵浦波长（64）的信号波长（66）激发，芯 （34,84），其具有折射率，其中所述芯（34,84）从所述第一端变换到其第二端（29）附近，使得所述光学有源光纤（30）在泵浦波长附近为多模 到第一端（28），并且在靠近第二端（29）的信号波长处是单模。 包层（36,86）围绕芯（34,84）的至少一部分并且具有比芯（34,84）的折射率更低的有效折射率。

    Increasing the retention of Ge0.sub.2 during production of glass articles
    8.
    发明授权
    Increasing the retention of Ge0.sub.2 during production of glass articles 失效
    在玻璃制品生产过程中增加GeO 2的保留

    公开(公告)号：US5641333A

    公开(公告)日：1997-06-24

    申请号：US566354

    申请日：1995-12-01

    申请人： Gerald E. Burke ,  Carlton M. Truesdale

    发明人： Gerald E. Burke ,  Carlton M. Truesdale

    IPC分类号： C03B8/04 ,  C03B19/14 ,  C03C1/02 ,  C03C3/06 ,  C03B19/01

    CPC分类号： C03C3/06 ,  C03B19/1415 ,  C03C1/028 ,  C03B2201/31 ,  C03B2207/87 ,  C03C2201/30 ,  C03C2201/31 ,  C03C2203/40

    摘要： A method for forming a GeO.sub.2 -doped SiO.sub.2 glass article by depositing glass particles to form a porous preform and then drying and sintering the porous preform. A precursor of SnO.sub.2 is also present in the reactant stream used to form the particles, whereby the reaction produces particles of glass that contain GeO.sub.2, SiO.sub.2 and SnO.sub.2. The presence of SnO.sub.2 in the particles reduces the reaction of GeO.sub.2 with chlorine to form GeCl.sub.4 during the drying step. The GeCl.sub.4 that would have formed would have either escaped from the porous preform or caused GeO.sub.2 to be re-deposited in an undesirable portion of the preform. The retention of GeO.sub.2 in the article is therefore enhanced.

    摘要翻译： 一种用于通过沉积玻璃颗粒以形成多孔预型体然后干燥和烧结多孔预型体来形成掺杂了GeO 2的SiO 2玻璃制品的方法。 用于形成颗粒的反应物流中也存在SnO 2的前体，由此反应产生含有GeO 2，SiO 2和SnO 2的玻璃颗粒。 在干燥步骤中，SnO 2在颗粒中的存在减少了GeO 2与氯反应形成GeCl4。 将形成的GeCl 4将从多孔预制件中逸出，或者使GeO 2重新沉积在预成型件的不期望的部分中。 因此，提高了GeO2在制品中的保留性。

    Controlled dispersion optical waveguide
    9.
    发明授权
    Controlled dispersion optical waveguide 失效
    受控分散光波导

    公开(公告)号：US5553185A

    公开(公告)日：1996-09-03

    申请号：US364797

    申请日：1994-12-27

    申请人： A. Joseph Antos ,  Evelyn M. DeLiso ,  Yanming Liu ,  Mark A. Newhouse ,  David K. Smith ,  Carlton M. Truesdale

    发明人： A. Joseph Antos ,  Evelyn M. DeLiso ,  Yanming Liu ,  Mark A. Newhouse ,  David K. Smith ,  Carlton M. Truesdale

    IPC分类号： G02B6/028 ,  G02B6/036 ,  G02B6/22

    CPC分类号： G02B6/03688 ,  G02B6/02242 ,  G02B6/0286 ,  G02B6/03644 ,  G02B6/03666 ,  G02B6/02004

    摘要： A single mode optical waveguide fiber having low, non-zero dispersion over a pre-selected wavelength range is disclosed. The refractive index profile of the core is characterized in that the core includes a plurality of distinct regions, each having an index profile, and a radius or width. By adjusting the index profile sizes and shapes of the plurality of core regions, a waveguide fiber may be made having a set of properties tailored for a high performance telecommunication system. In particular, dispersion slope can be maintained less than 0.05 ps/nm.sup.2 -km and absolute magnitude of total dispersion maintained in the range of 0.5 to 3.5 ps/nm-km over a pre-selected wavelength range. The zero dispersion wavelength is outside the pre-selected wavelength range and the cut off wavelength and mode field diameter are controlled to target values.

    摘要翻译： 公开了一种在预选波长范围内具有低，非零色散的单模光波导光纤。 芯的折射率分布的特征在于，芯包括多个不同的区域，每个区域具有折射率分布，以及半径或宽度。 通过调整多个芯区域的折射率分布尺寸和形状，可以制成具有为高性能电信系统定制的一组特性的波导光纤。 特别地，可以将色散斜率保持在小于0.05ps / nm 2-km，并且在预选波长范围内，总色散的绝对幅度保持在0.5至3.5ps / nm-km的范围内。 零色散波长在预选的波长范围之外，截止波长和模场直径被控制为目标值。

    Connector employing mode field modification
    10.
    发明授权
    Connector employing mode field modification 失效
    连接器采用模式字段修改

    公开(公告)号：US4763976A

    公开(公告)日：1988-08-16

    申请号：US52281

    申请日：1987-05-21

    申请人： Daniel A. Nolan ,  Carlton M. Truesdale

    发明人： Daniel A. Nolan ,  Carlton M. Truesdale

    IPC分类号： G02B6/26 ,  G02B6/36 ,  G02B6/38 ,  G02B6/42

    CPC分类号： G02B6/3859 ,  G02B6/262 ,  G02B6/3855 ,  G02B6/4202

    摘要： Disclosed is a mode field modifier for use with an optical fiber having a core and a cladding of outside diameter d. The modifier comprises a modifier core having a refractive index n.sub.1. Surrounding the modifier core is first cladding layer having a refractive index n.sub.2 that is less n.sub.1. On the surface of the first cladding layer is a second cladding layer having a refractive index n.sub.3 which is less than n.sub.2. The modifier is tapered intermediate its ends whereby it has a large diameter end and a small diameter end. The diameters of at least the core and first cladding layer at the large diameter end are greater than the corresponding diameters at the small end. The diameter D.sub.1 of the first cladding layer at the large diameter end is greater than d. An axially disposed hole in the large diameter end receives a fiber which is held in such alignment with the mode field modifier that it is in light coupling relationship with the modifier core. The mode field of a signal coupled from the fiber to the mode field modifier expands as it propagates though the tapered portion of the modifier to the small diameter end. An in-line coupler between two optical fibers is effected by connecting together in axial alignment two such mode field modifiers with their small diameter ends adjacent one another.