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    Ultrasensitive magnetic sensor with magneto-optically active material with high verdet constant
    11.
    发明授权
    Ultrasensitive magnetic sensor with magneto-optically active material with high verdet constant 有权
    超灵敏磁传感器，具有高verdet常数的磁光材料

    公开(公告)号：US08575927B2

    公开(公告)日：2013-11-05

    申请号：US12745343

    申请日：2009-01-16

    Applicant: Hitoshi Yamada ,  Kazuhiro Shintani ,  Akinobu Fujii ,  Norio Sato ,  Thierry Verbiest ,  Andre Persoons ,  Pavel Polynkin ,  Nasser Peyghambarian

    Inventor： Hitoshi Yamada ,  Kazuhiro Shintani ,  Akinobu Fujii ,  Norio Sato ,  Thierry Verbiest ,  Andre Persoons ,  Pavel Polynkin ,  Nasser Peyghambarian

    IPC: G01R33/02

    CPC classification number: G02F1/0036 ,  G01R33/032 ,  G01R33/0322

    Abstract: A high-resolution sensor of magnetic field sensor system and materials for use in such a system are described. The sensor systems measure a magnetic field using inorganic and/or organic magneto-optically active materials, e.g. polymer material and have an interferometer based on Faraday rotation. The polymer material is preferably in the form of a film. The polymer material has an optical property that is sensitive to the magnetic field, e.g. the Faraday rotation effect. The present invention also provides a sensor head structure comprising the above polymer material. The sensor head may be designed for use with an optical fiber or with mirrors. In particular the present invention provides a fiber Sagnac interferometer to measure the rotation of polarized plane of light. The present invention provides a fiber or mirror based Sagnac interferometer with passive phase bias applied to magnetic field sensing. This invention has the following three major aspects each being an embodiment of the present invention: 1. Sensing material: a conjugate polymer such as polythiophene and/or a polymer containing superparamagnetic nanoparticles that exhibits a giant Faraday rotation. 2. Magnetic field probe that incorporates the above polymer or polymer/nanoparticle composite, e.g. in the form of a film. 3. Sensor: The sensor combines an optical fiber-based Sagnac interferometer and the above magnetic field probe.

    Abstract translation: 描述了用于这种系统的磁场传感器系统和材料的高分辨率传感器。 传感器系统使用无机和/或有机磁光学材料测量磁场，例如， 并具有基于法拉第旋转的干涉仪。 聚合物材料优选为膜的形式。 聚合物材料具有对磁场敏感的光学性质，例如， 法拉第旋转效果。 本发明还提供一种包含上述聚合物材料的传感器头结构。 传感器头可以设计成与光纤一起使用或与镜子一起使用。 特别地，本发明提供一种光纤Sagnac干涉仪来测量光的偏振平面的旋转。 本发明提供了一种具有被施加到磁场感测的无源相位偏移的基于光纤或镜像的Sagnac干涉仪。 本发明具有以下三个主要方面，每个都是本发明的实施方案：1.感测材料：共轭聚合物如聚噻吩和/或含有超顺磁纳米颗粒的聚合物，其显示出巨大的法拉第旋转。 包含上述聚合物或聚合物/纳米颗粒复合材料的磁场探针，例如。 以电影的形式。 3.传感器：传感器结合了基于光纤的Sagnac干涉仪和上述磁场探头。

    ULTRASENSITIVE MAGNETIC SENSOR BASED ON GIANT FARADAY ROTATION
    12.
    发明申请
    ULTRASENSITIVE MAGNETIC SENSOR BASED ON GIANT FARADAY ROTATION 有权
    超声波传感器基于巨大的法拉第旋转

    公开(公告)号：US20120001625A1

    公开(公告)日：2012-01-05

    申请号：US12745343

    申请日：2009-01-16

    Applicant: Hitoshi Yamada ,  Kazuhiro Shintani ,  Akinobu Fujii ,  Norio Sato ,  Thierry Verbiest ,  Andre Persoons ,  Pavel Polynkin ,  Nasser Peyghambarian

    Inventor： Hitoshi Yamada ,  Kazuhiro Shintani ,  Akinobu Fujii ,  Norio Sato ,  Thierry Verbiest ,  Andre Persoons ,  Pavel Polynkin ,  Nasser Peyghambarian

    IPC: G01R33/02

    CPC classification number: G02F1/0036 ,  G01R33/032 ,  G01R33/0322

    Abstract: A high-resolution sensor of magnetic field sensor system and materials for use in such a system are described. The sensor systems measure a magnetic field using inorganic and/or organic magneto-optically active materials, e.g. polymer material and have an interferometer based on Faraday rotation. The polymer material is preferably in the form of a film. The polymer material has an optical property that is sensitive to the magnetic field, e.g. the Faraday rotation effect. The present invention also provides a sensor head structure comprising the above polymer material. The sensor head may be designed for use with an optical fiber or with mirrors. In particular the present invention provides a fiber Sagnac interferometer to measure the rotation of polarized plane of light. The present invention provides a fiber or mirror based Sagnac interferometer with passive phase bias applied to magnetic field sensing. This invention has the following three major aspects each being an embodiment of the present invention: 1. Sensing material: a conjugate polymer such as polythiophene and/or a polymer containing superparamagnetic nanoparticles that exhibits a giant Faraday rotation. 2. Magnetic field probe that incorporates the above polymer or polymer/nanoparticle composite, e.g. in the form of a film. 3. Sensor: The sensor combines an optical fiber-based Sagnac interferometer and the above magnetic field probe.

    Abstract translation: 描述了用于这种系统的磁场传感器系统和材料的高分辨率传感器。 传感器系统使用无机和/或有机磁光学材料测量磁场，例如， 并具有基于法拉第旋转的干涉仪。 聚合物材料优选为膜的形式。 聚合物材料具有对磁场敏感的光学性质，例如， 法拉第旋转效果。 本发明还提供一种包含上述聚合物材料的传感器头结构。 传感器头可以设计成与光纤一起使用或与镜子一起使用。 特别地，本发明提供一种光纤Sagnac干涉仪来测量光的偏振平面的旋转。 本发明提供了一种具有被施加到磁场感测的无源相位偏移的基于光纤或镜像的Sagnac干涉仪。 本发明具有以下三个主要方面，每个都是本发明的实施方案：1.感测材料：共轭聚合物如聚噻吩和/或含有超顺磁纳米颗粒的聚合物，其显示出巨大的法拉第旋转。 包含上述聚合物或聚合物/纳米颗粒复合材料的磁场探针，例如， 以电影的形式。 3.传感器：传感器结合了基于光纤的Sagnac干涉仪和上述磁场探头。

    Erbium and ytterbium co-doped phosphate glass optical fiber amplifiers using short active fiber length
    15.
    发明授权
    Erbium and ytterbium co-doped phosphate glass optical fiber amplifiers using short active fiber length 有权
    铒和镱共掺磷酸盐玻璃光纤放大器使用短的有源光纤长度

    公开(公告)号：US06611372B1

    公开(公告)日：2003-08-26

    申请号：US09589764

    申请日：2000-06-09

    Applicant: Nasser Peyghambarian ,  Shibin Jiang

    Inventor： Nasser Peyghambarian ,  Shibin Jiang

    IPC: H01S300

    CPC classification number: H01S3/067 ,  C03C3/17 ,  C03C3/19 ,  H01S3/06716 ,  H01S3/06754 ,  H01S3/094007 ,  H01S3/094015 ,  H01S3/094019 ,  H01S3/094069 ,  H01S3/1608 ,  H01S3/1618 ,  H01S3/175 ,  H01S3/2333

    Abstract: An optical fiber amplifier utilizing a phosphate glass optical fiber highly doped with rare-earth ions such as erbium to exhibit high gain per unit length, enabling the use of short fiber strands to achieve the needed gain in practical fiber optical communication networks. The high-gain phosphate optical glass fiber amplifiers are integrated onto substrates to form an integrated optics amplifier module. An optical pump such as a semiconductor laser of suitable wavelength is used to promote gain inversion of erbium ions and ultimately provide power amplification of a given input signal. Gain inversion is enhanced in the erbium doped phosphate glass fiber by co-doping with ytterbium. A phosphate fiber amplifier or an integrated optics amplifier module utilizing this power amplification can be combined with other components such as splitters, combiners, modulators, or arrayed waveguide gratings to form lossless or amplified components that do not suffer from insertion loss when added to an optical network. The fiber amplifier can be a single fiber or an array of fibers. Further, the phosphate glass fibers can be designed with a temperature coefficient of refractive index close to zero enabling proper mode performance as ambient temperatures or induced heating changes the temperature of the phosphate glass fiber. Large core 50-100 &mgr;m fibers can be used for fiber amplifiers. The phosphate glass composition includes erbium concentrations of at least 1.5 weight percentage, preferably further including ytterbium at 1.5 weight percentage, or greater.

    Abstract translation: 利用高掺杂铒等稀土离子的磷酸盐玻璃光纤的光纤放大器，在每单位长度上表现出高增益，能够实现短纤维束实现光纤通信网络中所需的增益。 高增益磷酸盐光学玻璃光纤放大器集成到基板上，形成集成光放大器模块。 使用诸如适当波长的半导体激光器的光泵来促进铒离子的增益反转，并最终提供给定输入信号的功率放大。 掺铒磷酸盐玻璃纤维通过与镱共掺杂增强反转。 利用该功率放大的磷酸纤维放大器或集成光学放大器模块可以与诸如分离器，组合器，调制器或阵列波导光栅的其它部件组合，以形成当添加到光学器件时不会受到插入损耗的无损或放大的部件 网络。 光纤放大器可以是单根光纤或一组光纤。 此外，磷酸盐玻璃纤维可以设计成具有接近于零的折射率的温度系数，从而能够在环境温度或诱导的加热改变磷酸盐玻璃纤维的温度时实现适当的模式性能。 大纤芯50-100mum纤维可用于光纤放大器。 磷酸盐玻璃组合物包含至少1.5重量％的铒浓度，优选进一步包括1.5重量％或更大的镱。

    Apparatus and method of generating nearly non-diffracting beams from multimode optical fibers
    18.
    发明授权
    Apparatus and method of generating nearly non-diffracting beams from multimode optical fibers 有权
    从多模光纤产生近似非衍射光束的装置和方法

    公开(公告)号：US08717669B2

    公开(公告)日：2014-05-06

    申请号：US13124582

    申请日：2009-10-14

    Applicant: Xiushan Zhu ,  Axel Schulzgen ,  Nasser Peyghambarian

    Inventor： Xiushan Zhu ,  Axel Schulzgen ,  Nasser Peyghambarian

    IPC: G02B6/28

    CPC classification number: G02B6/03611 ,  G02B6/0288 ,  G02B6/255

    Abstract: A first optical fiber (12) having a first end and a second end is connected to a multimode second optical fiber (14) at the second end. The first optical fiber (12) outputs a substantially single mode optical beam at its second end. The multimode second optical fiber (14) converts light in the optical beam of single mode from the first optical fiber to light of multiple modes, and provides an output beam that has less diffractive spreading than that of a Gaussian beam.

    Abstract translation: 具有第一端和第二端的第一光纤（12）在第二端连接到多模第二光纤（14）。 第一光纤（12）在其第二端输出基本单模光束。 多模第二光纤（14）将单模光束中的光从第一光纤转换成多模光，并提供具有比高斯光束更少的衍射扩散的输出光束。

    ALL-FIBER MODE SELECTION TECHNIQUE FOR MULTICORE FIBER LASER DEVICES
    19.
    发明申请
    ALL-FIBER MODE SELECTION TECHNIQUE FOR MULTICORE FIBER LASER DEVICES 有权
    用于多光纤激光器件的全纤模式选择技术

    公开(公告)号：US20090154503A1

    公开(公告)日：2009-06-18

    申请号：US12117532

    申请日：2008-05-08

    Applicant: Nasser Peyghambarian ,  Axel Schulzgen ,  Li Ll

    Inventor： Nasser Peyghambarian ,  Axel Schulzgen ,  Li Ll

    IPC: H01S3/30 ,  H01L21/02

    CPC classification number: H01S3/067 ,  H01S3/06708 ,  H01S3/06716 ,  H01S3/0672 ,  H01S3/06737

    Abstract: An optical device that includes 1) a gain section having a plurality of core regions including dopant species configured to absorb incident radiation at a first wavelength and emit radiation at a second wavelength, and 2) at least one passive section attached to the gain section. The gain section and the at least one passive section comprise an optical cavity which selectively promotes in-phase light emission from the optical cavity. An alternative optical device which includes a gain section having a plurality of core regions including dopant species configured to absorb incident radiation at a first wavelength and emit radiation at a second wavelength, and 2) two passive sections attached to the gain section at opposite ends. In this alternative optical device, the gain section and the two passive sections comprise an optical cavity which selectively promotes in-phase light emission from the optical cavity such that the light emission from the optical cavity, in a far field, has a singular Gaussian-like intensity distribution about a longitudinal axis extending from the optical cavity.

    Abstract translation: 一种光学装置，包括：1）具有多个核心区域的增益部分，所述多个核心区域包括被配置为吸收第一波长的入射辐射并发射第二波长的辐射的掺杂物质，以及2）附接到所述增益部分的至少一个被动部分。 增益部分和至少一个无源部分包括选择性地促进来自光腔的同相光发射的光腔。 一种备选的光学装置，其包括增益部分，该增益部分具有包括掺杂物质的多个核心区域，所述掺杂剂物质被配置为吸收第一波长的入射辐射并发射第二波长的辐射;以及2）在相对端连接到所述增益部分的两个被动部分。 在这种替代的光学装置中，增益部分和两个无源部分包括一个光腔，其选择性地促进来自光腔的同相光发射，使得在远场中来自光学腔的光发射具有单数高斯 - 关于从光腔延伸的纵向轴线的强度分布。

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