Optical amplifier and gain tilt compensation method
    41.
    发明申请
    Optical amplifier and gain tilt compensation method 失效
    光放大器和增益倾斜补偿方法

    公开(公告)号:US20030039026A1

    公开(公告)日:2003-02-27

    申请号:US10103751

    申请日:2002-03-25

    申请人: FUJITSU LIMITED

    IPC分类号: H01S003/00

    摘要: The optical amplifier realizes EDFA amplification of optical signals in new bands (the Snull- and S-bands), at wavelengths of 1450 to 1530 nm. The amplifier uses multiple erbium-doped fibers to amplify optical signals at wavelengths of 1450 to 1530 nm. Each of the multiple optical filters is interposed between the individual erbium-doped fibers. The sum of the transmission characteristics of the multiple filters is identical to an inverted EDF wavelength gain characteristic at wavelengths of 1450 to 1530 nm which is then shifted to the direction that the transmission increases.

    摘要翻译: 光放大器实现1450至1530 nm波长的新波段(S +和S波段)光信号的EDFA放大。 放大器使用多个掺铒光纤放大1450至1530 nm波长的光信号。 多个滤光器中的每一个插入在各个掺铒光纤之间。 多个滤波器的传输特性的总和与在1450至1530nm的波长处的反向EDF波长增益特性相同,然后将其移动到传输增加的方向。

    Optical fiber for light amplifier
    42.
    发明授权
    Optical fiber for light amplifier 失效
    光放大器用光纤

    公开(公告)号:US06347177B1

    公开(公告)日:2002-02-12

    申请号:US09417058

    申请日:1999-10-13

    IPC分类号: G02B600

    摘要: An optical fiber used for an optical amplifier, is formed by doping glass with rare-earth ions. Both praseodymium ions (Pr+3) and erbium ions (Er+3) are used as the rare-earth ions, and the glass is a fluoride glass or a sulfide glass. The optical fiber can be used at wavelengths of both 1.3 &mgr;m and 1.55 &mgr;m. The light amplification efficiency of an optical amplifier made of the optical fiber can be improved compared to that of an optical amplifier formed of only Pr+3 or only Er+3.

    摘要翻译: 用于光放大器的光纤通过用稀土离子掺杂玻璃形成。 使用镨离子(Pr + 3)和铒离子(Er + 3)作为稀土离子,玻璃是氟化物玻璃或硫化物玻璃。 光纤可以在1.3μm和1.55μm的波长下使用。 与仅由Pr + 3或仅Er + 3形成的光放大器相比,可以提高由光纤制成的光放大器的光放大效率。

    Fluorotellurite, amplifier glasses
    43.
    发明授权
    Fluorotellurite, amplifier glasses 失效
    荧光粉,放大镜

    公开(公告)号:US06344425B1

    公开(公告)日:2002-02-05

    申请号:US09443903

    申请日:1999-11-19

    申请人: Bruce G. Aitken

    发明人: Bruce G. Aitken

    IPC分类号: C03C315

    摘要: A family of fluorotellurite glasses, the composition of which consist essentially of, as calculated in mole percent, 30-75% TeO2, 15-60% ZnF2 and 0.005-10% of an oxide of erbium, thulium or holmium, and amplifying optical components produced from these glasses.

    摘要翻译: 一种含氟碲化物玻璃的组合物,其组成基本上由摩尔百分比计算为30-75%TeO 2,15-60%ZnF 2和0.005-10%铒,ium或钬氧化物,以及放大光学组分 从这些眼镜生产。

    Fiber-based continuous wave blue laser source
    44.
    发明授权
    Fiber-based continuous wave blue laser source 失效
    光纤连续波蓝光激光源

    公开(公告)号:US6014389A

    公开(公告)日:2000-01-11

    申请号:US823099

    申请日:1997-03-24

    申请人: Todd E. Wiest

    发明人: Todd E. Wiest

    摘要: A compact, continuous-wave blue laser is developed from a fiber made from heavy metal fluorides ("ZBLAN") doped with a rare-earth ion. The footprint required to create blue laser light is reduced because the fiber can be wound into spools of radius

    摘要翻译: 由掺杂有稀土离子的重金属氟化物(“ZBLAN”)制成的纤维开发出紧凑的连续波蓝色激光。 产生蓝色激光所需的占地面积减少,因为纤维可以卷绕成半径<25mm的卷轴,并且彼此堆叠而不会发生交互。 红外二极管(λDIFFERENCE 790 nm和λDIFFERENCE 1050 nm)以常规方式从纤维尾纤到二氧化硅纤维。 来自IR二极管的光通过具有二氧化硅输入和ZBLAN输出的2×1光纤耦合器耦合到单个光纤。 IR光在ZBLAN光纤主机中光学激发稀土离子的电子。 这种激发使得电子在480nm(在可见光谱的蓝色区域)中发光,因为它们放松到基态。 电介质反射镜反馈发射的光。 高反射器,高发射器(“HRHT”)是泵浦光的输入耦合器; 部分反射器,输出耦合器。 在发射的激光束从其输出的输出耦合器的末端附接分级折射率(“GRIN”)透镜,以提高发射光束的质量。

    Rare earth doped oxyhalide laser glass
    45.
    发明授权
    Rare earth doped oxyhalide laser glass 失效
    稀土掺杂卤氧化物激光玻璃

    公开(公告)号:US5798306A

    公开(公告)日:1998-08-25

    申请号:US835899

    申请日:1997-04-14

    摘要: The oxyhalide rare earth doped laser glass of the present invention comprises the substitution of fluorine for oxygen in glasses having the general molar batch composition of 50% SiO.sub.2, 25% CaO, 25% Al.sub.2 O.sub.3 to improve the distribution of rare earth dopants in the glass. The general molar batch composition of the invention ranges from approximately 45-70% SiO.sub.2, 15-35% CaO, 10-25% Al.sub.2 O.sub.3, 4-15% Al.sub.2 F.sub.6, and 0.001-2% Er.sub.2 O.sub.3. This substitution of fluorine into the 2SiO.sub.2. Al.sub.2 O.sub.3. CaO glass system provides erbium doped laser glasses having a Er.sub.2 O.sub.3 batch content of 0.01 mole % Er.sub.2 O.sub.3 to 1.2 mole % Er.sub.2 O.sub.3 (500 ppm Er.sub.2 O.sub.3 to 5.68 wt. % Er.sub.2 O.sub.3) which show little to no concentration quenching and exhibit useful fluorescence lifetimes of approximately 6 milliseconds (ms) or greater.

    摘要翻译: 本发明的卤氧化物稀土掺杂激光玻璃包括在具有一般摩尔批次组成为50%SiO 2,25%CaO,25%Al 2 O 3的玻璃中用氟代替氧,以改善玻璃中稀土掺杂剂的分布。 本发明的一般摩尔批次组合物的范围为约45-70%的SiO 2,15-35%的CaO,10-25%的Al 2 O 3,4-15%的Al 2 F 6和0.001-2%的Er 2 O 3。 氟取代为2SiO2。 Al2O3。 CaO玻璃系统提供具有Er2O3批次含量为0.01摩尔%Er 2 O 3至1.2摩尔%Er 2 O 3(500ppm Er 2 O 3至5.68重量%Er 2 O 3)的掺铒激光玻璃,其显示出很少至无浓度猝灭并且显示出约6毫秒的有用荧光寿命 (ms)以上。

    Solid state laser apparatus
    46.
    发明授权
    Solid state laser apparatus 失效
    固态激光装置

    公开(公告)号:US5581569A

    公开(公告)日:1996-12-03

    申请号:US420500

    申请日:1995-04-12

    申请人: Ryohei Tanuma

    发明人: Ryohei Tanuma

    摘要: A solid state laser apparatus includes a laser medium of a uniaxial crystal, such as a fluoride crystal, having a negative temperature variation ratio of refractive index, laser diodes for optically pumping the laser medium, a set of mirrors positioned at two longitudinal ends of the laser medium for oscillating the light in the laser medium and outputting a beam, and a system for cooling the laser medium. The thermal lens effect is suppressed by causing a thermal gradient to exist along only one chosen axis of the laser medium and eliminating the thermal lens diopter along the chosen axis by optimizing a ratio L/D of length L and diameter D of the laser medium.

    摘要翻译: 固体激光装置包括具有负温度变化率的折射率的单晶晶体的激光介质,例如氟化物晶体的激光介质,用于光学泵浦激光介质的激光二极管,位于所述激光介质的两个纵向端的一组反射镜 用于在激光介质中振荡光并输出光束的激光介质,以及用于冷却激光介质的系统。 通过使激光介质沿着选定的一个轴线存在热梯度来抑制热透镜效应,并且通过优化激光介质的长度L和直径D的比率L / D来消除所选择的轴上的热透镜屈光度。

    Rare earth ion doped CW cascade fiber laser
    47.
    发明授权
    Rare earth ion doped CW cascade fiber laser 失效
    稀土离子掺杂CW级联光纤激光器

    公开(公告)号:US5313477A

    公开(公告)日:1994-05-17

    申请号:US968890

    申请日:1992-10-30

    摘要: A continuous wave(CW) activator ion doped fiber laser is presented which lases at a normally self-terminating laser transition at a slope efficiency greater than that achieved by a self-terminating fiber laser. Two laser transitions, one corresponding to a self-terminating laser transition and the other to a transition out of the lower level of the self-terminating transition, are simultaneously stimulated in the activator ion doped fiber. Through simultaneous lasing of the two wavelengths corresponding to these transitions, the lower level of the self-terminating transition is sufficiently depopulated so that CW operation is achieved.

    摘要翻译: 提出了一种连续波(CW)激光器离子掺杂光纤激光器,其在通常自终止激光器转变处的斜率效率大于通过自终止光纤激光器实现的斜率效率。 在激活离子掺杂光纤中同时刺激两个激光转变,一个对应于自终止激光转换,另一个激发转变到自终止跃迁的较低水平。 通过与这些转变相对应的两个波长的同时激光,自终止转变的较低电平被充分地减少,从而实现CW操作。