MULTICORE OPTICAL FIBER (VARIANTS)
    1.
    发明申请
    MULTICORE OPTICAL FIBER (VARIANTS) 有权
    多光纤(变种)

    公开(公告)号:US20130294737A1

    公开(公告)日:2013-11-07

    申请号:US13980536

    申请日:2011-12-23

    IPC分类号: G02B6/02

    摘要: The invention relates to optical fiber communications. A multicore optical fiber comprises at least two light-guiding cores made of doped fused silica with refractive indices nc1, nc2, nck, each light-guiding core of the at least two light-guiding cores being surrounded by a respective arbitrarily shaped inner reflecting cladding made of fused silica or doped fused silica with refractive indices nc11, nc12, nclk, which are less than the refractive indices nc1, nc2, nck of respective light-guiding cores; a continuous or intermittent barrier region made of fused silica and having an arbitrary cross-sectional shape, the barrier region being formed in the space between the inner reflecting claddings and an outer cladding of fused silica with refractive index n0, the barrier region having refractive index nb, which is less than the refractive index of each of the inner reflecting claddings; and an external protective coating. In another embodiment the barrier region can be formed of through holes in fused silica or doped fused silica.

    摘要翻译: 本发明涉及光纤通信。 多芯光纤包括由折射率为nc1,nc2,nck的掺杂熔融石英制成的至少两个导光芯,所述至少两个导光芯的每个导光芯被相应的任意形状的内反射包层包围 由折射率为nc11,nc12,nclk的熔融二氧化硅或掺杂熔融二氧化硅制成,它们小于各个导光芯的折射率nc1,nc2,nck; 由熔融石英制成并具有任意横截面形状的连续或间歇阻挡区域,所述阻挡区域形成在折射率为n0的内反射包层和熔融二氧化硅的外包层之间的空间中,所述阻挡区域具有折射率 nb,其小于每个内反射包层的折射率; 和外部保护涂层。 在另一个实施方案中,阻挡区可以由熔融二氧化硅或掺杂的熔融二氧化硅中的通孔形成。

    Raman fibre laser, bragg fibre-optical grating and method for changing
the refraction index in germanium silicate glass
    2.
    发明授权
    Raman fibre laser, bragg fibre-optical grating and method for changing the refraction index in germanium silicate glass 失效
    拉曼光纤激光器,布拉格光纤光栅和改变锗硅酸盐玻璃的折射率的方法

    公开(公告)号:US5838700A

    公开(公告)日:1998-11-17

    申请号:US776933

    申请日:1997-02-11

    摘要: The inventions relate to the sphere of the laser technology, the fibre and integrated optics, and are industrially applicable in elements of the fibre and waveguide optics made of germanium silicate glass, particularly in fibre-optical Bragg gratings and long-spacing gratings, scattering compensators, integrated optical waveguides, etc. The objective of simplification of Raman fibre lasers emitting in the wavelengths of 1.24 mc and 1.48 mc and enhancement of the radiation conversion efficiency in Raman scattering is attained. A laser emitting in the wavelength of 1.24 mc comprises a pumping source (1), a fibre light guide (2) containing P205 in the amount from 1 to 30 mole %, portions of a fibre light guide that contain GeO2 in the amount from 11 to 39 mole % and are Bragg fibre-optical gratings (3) and (4), grating (3) forming a blank distributed reflector of an optical resonator for first Stokes component, and grating (4)--the output distributed reflector for the same resonator. First Stokes component is derived at the output. In a Raman fibre laser emitting in the wavelength of 1.48 mc second Stokes component is derived. A change in the refraction index in a portion of a fibre light guide (11) is achieved by directing to it a laser radiation (12) having a wavelength from 270 to 390 nm that passes through a protection polymer cladding of a fibre light guide (11). 3 independent claims, 23 dependent claims, 7 figures.

    摘要翻译: PCT No.PCT / RU96 / 00182 Sec。 371日期1997年2月11日 102(e)日期1997年2月11日PCT提交1996年5月7日PCT公布。 第WO97 / 05511号公报 日期1997年2月13日本发明涉及激光技术,光纤和集成光学领域,并且在工业上适用于由硅酸锗玻璃制成的光纤和波导光学元件,特别是在光纤布拉格光栅和长距离光纤中, 间隔光栅,散射补偿器,集成光波导等。实现了在1.24mc和1.48mc的波长下发射的拉曼光纤激光器的简化和提高拉曼散射的辐射转换效率的目的。 发射波长为1.24mc的激光器包括泵送源(1),含有1至30摩尔%的P205的纤维光导(2),纤维光导的部分含有量为11的GeO2 为39摩尔%,并且布拉格光纤光栅(3)和(4),形成用于第一斯托克斯分量的光学谐振器的空白分布反射器的光栅(3)和光栅(4) - 用于相同的输出分布反射器 谐振器。 在输出端派生第一个斯托克斯分量。 在以1.48mc的波长发射的拉曼光纤激光器中,推导出第二斯托克斯分量。 纤维光导(11)的一部分中的折射率的变化是通过将具有270至390nm的波长的激光辐射(12)引导到穿过纤维光导的保护性聚合物包层 11)。 3个独立的索赔,23个从属权利要求,7个数字。

    Mode field diameter conversion fiber, method for locally changing a
refractive index of optical waveguides and method for fabricating
optical waveguide preforms
    3.
    发明授权
    Mode field diameter conversion fiber, method for locally changing a refractive index of optical waveguides and method for fabricating optical waveguide preforms 失效
    模场直径转换光纤,局部改变光波导的折射率的方法和制造光波导预制棒的方法

    公开(公告)号:US6125225A

    公开(公告)日:2000-09-26

    申请号:US101425

    申请日:1998-07-09

    摘要: The invention relates to fiber optics and can be employed in fiber radiation collimators, optical waveguide couplers, spectral filters, optical isolators, long-period gratings, dispersion compensators, cascade mode field diameter conversion fibers on simulated Raman effect, physical value sensors, radiation suppression units for predetermined wavelengths, and for smoothing the gain spectrum in erbium fiber amplifiers. The invention facilitates fabrication of optical waveguides and apparatuses based on them. To produce preforms for optical waveguides (1) by a plasma chemical vapor deposition method, molecular gaseous agents, fed to a substrate tube (24), are mixed so that less than five atoms of oxygen fall on every atom of silicon and more than one atom of nitrogen falls on every 1000 atoms of oxygen. The refractive index is locally changed by heating a length of an optical waveguide (1). This causes a local thermal diffusion of elements contained in a core (3) into a cladding (2), or vice versa. The length of the optical waveguide (1) is heated by current of an electric arc (10) or by radiation (16) of an infrared laser (15). The core (3) is doped with nitrogen at concentration from 0.01 at. % to 5 at. %. In the mode field diameter conversion fiber, a diameter of the core (3) changes along the length of the optical waveguide (1), increasing towards its end (4).

    摘要翻译: PCT No.PCT / RU97 / 00278 Sec。 371日期:1998年7月9日 102(e)日期1998年7月9日PCT 1997年9月3日PCT公布。 公开号WO98 / 28643 日期1998年7月2日本发明涉及光纤,可用于模拟拉曼效应的光纤辐射准直仪,光波导耦合器,光谱滤波器,光隔离器,长周期光栅,色散补偿器,级联模场场直径转换光纤,物理 值传感器,用于预定波长的辐射抑制单元,以及用于平滑铒光纤放大器中的增益谱。 本发明有助于基于它们制造光波导和装置。 为了通过等离子体化学气相沉积法制造光波导(1)的预成型件,将馈入基底管(24)的分子气体试剂混合,使得少于5个氧原子落在硅原子上,并且多于一个 氮原子落在每1000个氧原子上。 通过加热光波导(1)的长度来局部地改变折射率。 这导致包含在芯(3)中的元件的局部热扩散进入包层(2),反之亦然。 光波导(1)的长度由电弧(10)的电流或红外激光(15)的辐射(16)加热。 核(3)掺杂浓度为0.01at。 %至5 at。 %。 在模场直径转换光纤中,芯(3)的直径沿着光波导(1)的长度改变,朝向其端部(4)增加。

    Amplifying Optical Fiber Operating At A Wavelength In The Range Of 1000-1700 nm, Methods of Fabricating The Same, And Fiber Laser
    4.
    发明申请
    Amplifying Optical Fiber Operating At A Wavelength In The Range Of 1000-1700 nm, Methods of Fabricating The Same, And Fiber Laser 有权
    在1000-1700nm波长范围内放大光纤工作,其制造方法和光纤激光器

    公开(公告)号:US20090116809A1

    公开(公告)日:2009-05-07

    申请号:US12067698

    申请日:2006-09-08

    IPC分类号: G02B6/02 H01S3/30

    摘要: The invention relates to lasers and fiber optics. An amplifying optical fiber operating at a wavelength in the range of 1000-1700 nm comprises an oxide glass core to provide amplification and at least one oxide glass cladding. According to the invention the core contains oxides of elements selected from the group consisting of silicon, germanium, phosphorus, bismuth, aluminum, gallium at concentration of bismuth oxide of 10-4-5 mol %, concentration of silicon and germanium oxides, taken together or separately, of 70-99.8999 mol %, concentration of aluminum and gallium oxides, taken together or separately, of 0.1-20 mol % concentration of phosphorus oxide from 0 to 10 mol %, and provides a maximum optical gain at least 10 times greater than the nonresonant loss factor in the optical fiber. An outside oxide glass cladding comprises fused silica. The optical fiber core has an absorption band in the 1000 nm region, pumping to which region provides an increased efficiency of power conversion of pump light into luminescence light in the 1000-1700 nm range as compared to pumping to another absorption bands in which pumping brings about luminescence in the 1000-1700 nm range. The optical fiber emits luminescence in the range of 1000-1700 nm when excited by light with wavelengths in the range of 750-12000 nm and a half-height width of the luminescence band of more than 120 nm, and luminescence band boundaries defined as points in which the luminescence intensity drops twice relative to the intensity in the luminescence band maximum lie within the 1000-1700 nm spectral range.

    摘要翻译: 本发明涉及激光器和光纤。 在1000-1700nm波长范围内工作的放大光纤包括一个氧化物玻璃芯,以提供放大和至少一个氧化物玻璃包层。 根据本发明,芯包含选自硅,锗,磷,铋,铝,镓的氧化物,氧化铋的浓度为10-4-5mol%,硅和锗的浓度,一起 或分别为70-99.8999摩尔%的铝和镓氧化物的浓度,一起或分开,0.1-20摩尔%的氧化磷浓度为0至10摩尔%,并且提供至少10倍的最大光学增益 比光纤中的非谐振损耗因子。 外部氧化物玻璃包层包括熔融石英。 光纤芯在1000nm区域中具有吸收带,与泵送到另一吸收带相比,在泵送到该区域时泵送到该区域的泵浦光的功率转换效率提高到1000-1700nm范围内的发光中 关于1000-1700nm范围内的发光。 光发射在1000-1700nm范围内,当波长为750-12000nm,发光带的半高宽度大于120nm时,光线发射,发光带边界定义为点 其中发光强度相对于发光带最大值的强度下降两倍在1000-1700nm光谱范围内。

    Fiber-optic pressure sensor, variants and method for producing a resilient membrane
    5.
    发明授权
    Fiber-optic pressure sensor, variants and method for producing a resilient membrane 失效
    光纤压力传感器,用于生产弹性膜的变型和方法

    公开(公告)号:US06539136B1

    公开(公告)日:2003-03-25

    申请号:US09719834

    申请日:2000-12-18

    IPC分类号: G02B600

    CPC分类号: G01L9/0079

    摘要: The inventions relate to measurements of a hydrostatic and/or fast-changing pressure by optical means, and are suitable for aerodynamic investigations of aircraft and small spacecraft, in robotics, including small force micro-clamps, in remote pressure monitoring (in wells, vessels, cylinders), in medicine and medical and biological investigations, hydroacoustics, security systems. The object is to improve the sensitivity and enhance the temperature and vibration stability of a pressure sensor. The pressure sensor is a low Q-factor Fabry-Perot cavity/interferometer 6 at the end of a single-mode optical fiber 1 with the 4% Fresnel reflection from the silica glass/air interface. Another movable mirror of the cavity is formed by an end face 10 of a short (1-3 mm) optical fiber length 9 having a small inertial mass and inserted into the center of a flexible membrane 9 of 500-700 &mgr;m in diameter, tightly sealing a small air volume of about 1-3 mm3 inside a second capillary 3 with the external diameter of 0.5 to 0.9 mm. End faces 7 and 10 of the optical fibers 1 and 9 forming the Fabry-Perot cavity 6 with a gap of about 50 &mgr;m are placed inside the capillary 2 with the internal diameter of about 145 &mgr;m. The temperature stability of the sensor is &Dgr;P/&Dgr;T≈0.001 atm/° C.

    摘要翻译: 本发明涉及通过光学装置测量流体静力学和/或快速变化的压力,并且适用于飞行器和小型航天器在机器人技术中的空气动力学研究,包括小型力量微型夹具,在远程压力监测(井,容器 ,气瓶),在医学和医学和生物学调查,水声学,安全系统。 目的是提高灵敏度,提高压力传感器的温度和振动稳定性。 压力传感器是在单模光纤1的末端具有来自石英玻璃/空气界面的4%菲涅耳反射的低Q因子法布里 - 珀罗腔/干涉仪6。 空腔的另一可移动镜由具有小惯性质量的短(1-3mm)光纤长度9的端面10形成,并且直接插入到直径为500-700μm的柔性膜9的中心 在外径为0.5至0.9mm的第二毛细管3内密封约1-3mm 3的小空气体积。 形成具有约50μm间隙的法布里 - 珀罗腔6的光纤1和9的端面7和10被放置在毛细管2的内部,内径约为145μm。 传感器的温度稳定度为DELTAP /DELTAT≈0.001atm /°C.

    Multicore optical fiber (variants)
    6.
    发明授权
    Multicore optical fiber (variants) 有权
    多核光纤(变体)

    公开(公告)号:US09052433B2

    公开(公告)日:2015-06-09

    申请号:US13980536

    申请日:2011-12-23

    IPC分类号: G02B6/02 G02B6/036

    摘要: The invention relates to optical fiber communications. A multicore optical fiber comprises at least two light-guiding cores made of doped fused silica with refractive indices nc1, nc2, nck, each light-guiding core of the at least two light-guiding cores being surrounded by a respective arbitrarily shaped inner reflecting cladding made of fused silica or doped fused silica with refractive indices nc11, nc12, nclk, which are less than the refractive indices nc1, nc2, nck of respective light-guiding cores; a continuous or intermittent barrier region made of fused silica and having an arbitrary cross-sectional shape, the barrier region being formed in the space between the inner reflecting claddings and an outer cladding of fused silica with refractive index n0, the barrier region having refractive index nb, which is less than the refractive index of each of the inner reflecting claddings; and an external protective coating. In another embodiment the barrier region can be formed of through holes in fused silica or doped fused silica.

    摘要翻译: 本发明涉及光纤通信。 多芯光纤包括由折射率为nc1,nc2,nck的掺杂熔融石英制成的至少两个导光芯,所述至少两个导光芯的每个导光芯被相应的任意形状的内反射包层包围 由折射率为nc11,nc12,nclk的熔融二氧化硅或掺杂熔融二氧化硅制成,它们小于各个导光芯的折射率nc1,nc2,nck; 由熔融石英制成并具有任意横截面形状的连续或间歇阻挡区域,所述阻挡区域形成在折射率为n0的内反射包层和熔融二氧化硅的外包层之间的空间中,所述阻挡区域具有折射率 nb,其小于每个内反射包层的折射率; 和外部保护涂层。 在另一个实施方案中,阻挡区可以由熔融二氧化硅或掺杂的熔融二氧化硅中的通孔形成。

    Raman fiber laser
    8.
    发明授权
    Raman fiber laser 失效
    拉曼光纤激光器

    公开(公告)号:US06625180B2

    公开(公告)日:2003-09-23

    申请号:US09776296

    申请日:2001-02-02

    IPC分类号: H01S330

    摘要: The invention relates to the field of laser engineering and fiber optics and is industrially used to pump optical amplifiers used in wide band fiber-optical communication systems. The subject matter of the invention is a Raman fiber laser based on a phosphosilicate fiber, comprising a pumping radiation source 1, a length 2 of a phosphosilicate fiber, at least two pairs of Bragg gratings as reflectors 3 and 4, wherein each pair of Bragg gratings forms an optical resonator, wherein the transmission of energy between the resonators is effected due to stimulated Raman scattering, both at relatively high frequency intramolecular oscillations, related to the presence of phosphorus oxide in the fiber (the frequency difference of such resonators being selected from the range of 1305-1355 cm−1), and at relatively low frequency oscillations related to a silicate matrix of the fiber, the shift of frequencies between such resonators being selected from the range of 50-560 cm−1.

    摘要翻译: 本发明涉及激光工程和光纤领域,并且在工业上用于泵浦在宽带光纤通信系统中使用的光放大器。 本发明的主题是基于磷硅酸盐纤维的拉曼光纤激光器,其包括泵浦辐射源1,磷硅酸盐纤维的长度2,作为反射器3和4的至少两对布拉格光栅,其中每对布拉格 光栅形成光学谐振器,其中谐振器之间的能量传输是由于受到相对高频分子内振荡的拉曼散射的影响,与光纤中存在磷氧化物有关(这种谐振器的频率差选自 1305-1355cm -1的范围),并且在与纤维的硅酸盐基质相关的相对低的频率振荡下,这些谐振器之间的频率偏移选自50-560cm -1的范围。