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    • 21. 发明申请
    • Faraday Rotator and Isolator
    • 法拉第旋转器和隔离器
    • US20130129272A1
    • 2013-05-23
    • US13708787
    • 2012-12-07
    • AdValue Photonics, Inc.
    • Shibin JiangJihong GengZhuo JiangTao Luo
    • G02F1/095
    • G02F1/095C03C13/046G02B6/2746G02F1/0955
    • An all-fiber optic Faraday rotator and isolator is presented. The device has a multicomponent glass optical fiber having a core having a first doping concentration of 55%-85% (wt./wt.) of a first rare-earth oxide and a cladding having a section doping concentration of 55%-85% (wt./wt.) of a second rare-earth oxide, where the first rare-earth oxide and the second rare earth oxide are one or more of Pr2O3, Nd2O3, Pm2O3, Sm2O3, Eu2O3, Gd2O3, Tb2O3, Dy2O3, Ho2O3, Er2O3, Tm2O3, Yb2O3, La2O3, Ga2O3, Ce2O3, and Lu2O3, and where the refractive index of the cladding is lower than a refractive index of the core. The fiber optic device further includes multiple magnetic cells each formed to include a bore extending there through, where the fiber is disposed in the bore of one of the magnetic cells.
    • 提出了全光纤法拉第转子和隔离器。 该器件具有多组分玻璃光纤,其具有第一掺杂浓度为第一稀土氧化物的55%-85%(重量/重量)的芯和具有55%-85%的截面掺杂浓度的包层的芯, 其中第一稀土氧化物和第二稀土氧化物是Pr 2 O 3,Nd 2 O 3,Pm 2 O 3,Sm 2 O 3,Eu 2 O 3,Gd 2 O 3,Tb 2 O 3,Dy 2 O 3,Ho 2 O 3中的一种或多种的第二稀土类氧化物(重量/重量) ,Er2O3,Tm2O3,Yb2O3,La2O3,Ga2O3,Ce2O3和Lu2O3,并且其中包层的折射率低于芯的折射率。 光纤设备还包括多个磁性单元,每个磁单元形成为包括在其中延伸的孔,其中光纤设置在磁性单元之一的孔中。
    • 23. 发明申请
    • NONRECIPROCAL OPTICAL ELEMENT WITH INDEPENDENT CONTROL OF TRANSMISSION OPPOSITE DIRECTIONS
    • 具有独立控制传输方向的非光学光学元件
    • US20050207009A1
    • 2005-09-22
    • US10806717
    • 2004-03-22
    • Oleg EfimovAlexander Betin
    • Oleg EfimovAlexander Betin
    • G02B6/26G02F1/09G02F1/095H04B10/18G02B27/28
    • G02F1/093G02B6/2746Y10S359/90
    • A nonreciprocal optical element and method for operating it to effect separate control of intensity and phase (or optical path length) of counter propagating beams over a very wide range. The nonreciprocal optical element includes a circulator for routing a first signal from a first port to a second port and a second signal from the second port to a third port, a third signal from the third port to a fourth port and a fourth signal from the fourth port to the first port; a first mirror for reflecting a signal output by the second port back into the second port; and second mirror for reflecting a signal output by the fourth port back into the fourth port. Polarization rotation elements such as quarter-wave plates are disposed between the mirrors and the second and fourth ports to preserve the polarization of the input beams. Filters are disposed between these ports and mirrors to adjust the transmittance of the input and output signals. An arrangement is included for translating the positions of the mirrors relative to the ports to adjust the phase of the output signals. Independent spectral control is effected by providing a Bragg grating, interference filter or other spectral filter between the second or fourth ports and the mirror associated therewith.
    • 一种不可逆光学元件和方法,用于对非常宽的范围内的反向传播光束的强度和相位(或光程长度)进行单独的控制。 不可逆光学元件包括用于将第一信号从第一端口路由到第二端口的循环器和从第二端口到第三端口的第二信号,从第三端口到第四端口的第三信号和来自第二端口的第四信号 第一口港口; 用于将由第二端口输出的信号反射回第二端口的第一反射镜; 以及用于将由第四端口输出的信号反射回第四端口的第二反射镜。 诸如四分之一波片的偏振旋转元件设置在反射镜和第二和第四端口之间以保持输入光束的偏振。 过滤器设置在这些端口和反射镜之间,以调节输入和输出信号的透射率。 包括用于平移反射镜相对于端口的位置以调整输出信号的相位的布置。 独立的光谱控制通过在第二或第四端口和与之相关联的反射镜之间提供布拉格光栅,干涉滤光片或其他光谱滤光片来实现。
    • 25. 发明授权
    • Magneto-optic modulator and optical communication system using the same
    • 磁光调制器和光通信系统使用相同
    • US06912080B2
    • 2005-06-28
    • US10391793
    • 2003-03-20
    • Hisashi Minemoto
    • Hisashi Minemoto
    • G02F1/09G02F1/095
    • G02F1/095G02F1/09
    • The magneto-optic modulator rotates a polarization of a light incident to a magneto-optic device which causes Faraday effect under such a magnetic field arrangement that the RF magnetic field has a component perpendicular to a light propagation direction and the RF magnetic field is directed to more than ±30° from the bias magnetic field direction. The bias magnetic field generator may be a permanent magnet, while the RF magnetic field generator may be a strip line running along a waveguide for the incident light. The strip line is fed by an RF electric current signal. The light beam is modulated at a frequency as high as about 10 GHz. The modulation depth can be further improved by using an impedance transformer and magnetic core.
    • 磁光调制器旋转入射到磁光器件的光的偏振,这在这样的磁场布置下引起法拉第效应,使得RF磁场具有垂直于光传播方向的分量,并且RF磁场被引导到 超过偏心磁场方向±30°。 偏置磁场发生器可以是永磁体,而RF磁场发生器可以是沿着用于入射光的波导延伸的带状线。 带状线由RF电流信号馈送。 光束以高达约10GHz的频率被调制。 通过使用阻抗变压器和磁芯可以进一步提高调制深度。
    • 26. 发明申请
    • Integrated optical isolator using multi-mode interference structure
    • 集成光隔离器采用多模干涉结构
    • US20050094923A1
    • 2005-05-05
    • US10955980
    • 2004-09-30
    • Young-Il KimTae-Hoon YoonSeok LeeDeok-Ha WooSun-Ho KimHi-Jung KimGwan-Su LeeSung-Kyu KimMin-Chul ParkChang-Wan Son
    • Young-Il KimTae-Hoon YoonSeok LeeDeok-Ha WooSun-Ho KimHi-Jung KimGwan-Su LeeSung-Kyu KimMin-Chul ParkChang-Wan Son
    • G02B6/12G02B6/28G02B27/28G02F1/095
    • G02F1/0955G02B6/2813G02F2001/212G02F2001/217
    • The invention relates to a fabrication of an integrated optical isolator using a Multi-Mode Interference (MMI) structure and a cladding layer comprising magneto-optical material, which remove needless reflection generated in the course of light propagation and make short length integration possible. Thus, the invention uses nonreciprocal phase shift effect that optical characteristics are altered according to the direction of light propagation. In order to fabricate a light waveguide optical isolator, an input light should be separated into two light waveguides having the same power. That is, for the purpose of reducing the length of optical isolator device, the waveguide length needed to separate an input light into two light waveguides should be shortened. Since the light waveguide length of MMI structure is much shorter than the length of Mach-Zehnder light waveguide for separating an input light into two waveguides, the length of optical isolator device using MMI structure can be reduced. Moreover, since MMI structure exhibits big permissible error in fabrication, the invention has the advantage that it is simple to fabricate the device.
    • 本发明涉及使用多模干涉(MMI)结构的集成光隔离器的制造和包括磁光材料的覆层,其消除了在光传播过程中产生的不必要的反射并且使短长度集成成为可能。 因此,本发明使用不可逆相移效应,光学特性根据光传播的方向而改变。 为了制造光波导光隔离器,输入光应该分成具有相同功率的两个光波导。 也就是说,为了减小光隔离器的长度,应该缩短将输入光分成两个光波导所需的波导长度。 由于MMI结构的光波导长度比用于将输入光分离为两个波导的马赫 - 曾德尔光波导的长度短得多,所以可以减少使用MMI结构的光隔离器装置的长度。 此外,由于MMI结构在制造中表现出大的允许误差,所以本发明的优点在于制造器件是简单的。