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    Variable polarization plane rotator and optical device using same
    31.
    发明授权
    Variable polarization plane rotator and optical device using same 失效
    可变偏振平面旋转器和使用其的光学装置

    公开(公告)号：US06931165B2

    公开(公告)日：2005-08-16

    申请号：US10974780

    申请日：2004-10-28

    Applicant: Hiroshi Nagaeda ,  Nobuaki Mitamura ,  Kazuaki Akimoto

    Inventor： Hiroshi Nagaeda ,  Nobuaki Mitamura ,  Kazuaki Akimoto

    IPC: G02B6/32 ,  G02B5/30 ,  G02B6/26 ,  G02B6/34 ,  G02B27/28 ,  G02F1/01 ,  G02F1/03 ,  G02F1/061 ,  G02F1/13 ,  G02F1/31 ,  G02B6/00

    CPC classification number: G02B6/29302 ,  G02B6/266 ,  G02B6/272 ,  G02B6/2766 ,  G02B27/286 ,  G02F1/0136 ,  G02F2201/17 ,  G02F2203/48

    Abstract: An optical device includes a small and low-cost variable polarization plane rotator that can control a rotation angle of the polarization plane easily. A variable polarization plane rotator is provided with a λ/4 phase plate having an optical axis in the same direction as, or at a 90 degree angle relative to, a polarization direction of an input light beam. A phase difference variable element has an optical axis at a ±45 degree angle relative to the optical axis of the λ/4 phase plate, to apply a variable phase difference between the polarization components parallel to and perpendicular to the optical axis thereof. A phase difference adjustment section adjusts the variable phase difference of the phase difference variable element, wherein the input light beam after being transmitted through the phase difference variable element to form elliptically polarized light or circularly polarized light, is transmitted through the λ/4 phase plate to form linearly polarized light. The polarization plane of the input light beam is rotated by an angle corresponding to the phase difference applied by the phase difference variable element.

    Abstract translation: 光学装置包括可以容易地控制偏振面的旋转角度的小而低成本的可变偏振面旋转器。 可变偏振面旋转体设置有λ/ 4相位板，其具有与输入光束的偏振方向相同的方向或相对于输入光束的偏振方向成90度角的光轴。 相位差可变元件相对于λ/ 4相位板的光轴具有±45度角的光轴，以在平行于其并垂直于其光轴的偏振分量之间施加可变相位差。 相位差调整部分调节相位差可变元件的可变相位差，其中通过相位差可变元件传输以形成椭圆偏振光或圆偏振光的输入光束透射通过λ/ 4相位板 以形成线偏振光。 输入光束的偏振平面旋转与由相位差可变元件施加的相位差对应的角度。

    Magneto-optical devices
    32.
    发明申请
    Magneto-optical devices 失效
    磁光器件

    公开(公告)号：US20050146769A1

    公开(公告)日：2005-07-07

    申请号：US10923873

    申请日：2004-08-24

    Applicant: Shinji Iwatsuka

    Inventor： Shinji Iwatsuka

    IPC: G02F1/01 ,  G02F1/09

    CPC classification number: G02F1/092 ,  G02F2201/17 ,  G02F2201/34

    Abstract: The invention provides small-sized, power-saving and easily-producible magneto-optical devices. The magneto-optical device comprises a Faraday rotator having nearly parallel surfaces and a Z-direction magnetic easy axis; a total reflection film formed partly on one surface of the Faraday rotator; another total reflection film formed partly on the other surface thereof; a light input region through which light enters the Faraday rotator; a light output region through which the light having alternately reflected on the total reflection films goes out of the Faraday rotator; a permanent magnet that forms a predetermined magnetic domain structure in the Faraday rotator and applies a magnetic field component in the Z-direction to the Faraday rotator so that the magnetization direction could be the same both in the light input region and the light output region; and an electromagnet that varies the position at which the magnetic field component applied to the Faraday rotator is 0 (zero).

    Abstract translation: 本发明提供小型，省电和易于生产的磁光器件。 磁光装置包括具有几乎平行的表面和Z方向的易磁化轴的法拉第旋转器; 全反射膜部分地形成在法拉第旋转器的一个表面上; 另一个全反射膜部分形成在其另一个表面上; 光进入法拉第旋转器的光输入区域; 在全反射膜上交替反射的光从法拉第旋转器出来的光输出区域; 在法拉第旋转器中形成预定的磁畴结构的永磁体，并向Z方向施加磁场分量到法拉第旋转器，使得光输入区域和光输出区域的磁化方向可以相同; 以及改变施加到法拉第旋转器的磁场分量为0（零）的位置的电磁体。

    High speed fiber-optic attenuation modules
    33.
    发明授权
    High speed fiber-optic attenuation modules 失效
    高速光纤衰减模块

    公开(公告)号：US06885807B2

    公开(公告)日：2005-04-26

    申请号：US10094255

    申请日：2002-03-14

    Applicant: Nabeel Agha Riza

    Inventor： Nabeel Agha Riza

    IPC: G02F1/11 ,  H04B10/18 ,  H04J14/02 ,  G02B6/00 ,  G02B6/26 ,  G02B6/42

    CPC classification number: H04B10/25073 ,  G02F1/11 ,  G02F2201/16 ,  G02F2201/17 ,  G02F2203/48 ,  H04J14/02 ,  H04J14/0221

    Abstract: Unique multi-diffraction structures using electronically controlled Bragg diffraction devices such as acousto-optic (AO) devices to accomplish optical beam attenuation control functions. These variable optical attenuator (VOA) modules can be fully inertialess as they can use electronically programmable sub-microsecond speed AO devices to implement optical gain controls. These VOAs deliver desirable capabilities in one optically reversible unit, making high dynamic range, low loss, high power handling, ultra-fast, high optical isolation, broadband operation, self-aligning robust modules. These VOAs can be made essentially independent of the optical polarization of the incident light by the use of a unique fixed waveplate compensation technique within the VOA configuration that suppresses polarization dependent loss. Broadband gain control operation over several wavelengths can be achieved by controlling the frequency and electrical drive power of the chosen frequencies feeding the acousto-optic devices. Interleaver devices can be cascaded with the acousto-optic modules to improve wavelength selectivity of the overall VOA modules. Alternative embodiments can use electrically programmable Bragg gratings in polymer dispersed liquid crystal and acousto-optic tunable filter devices as Bragg grating devices. Embodiments are proposed using independently controlled Bragg diffractions using multiple drive signals connected to multiple device transducers. Drive signal formats can be digital, analog, or a combination for simultaneously driving the VOA modules. Dual-mode VOA module designs are also described using mirror positioning.

    Abstract translation: 使用诸如声光（AO）装置的电子控制布拉格衍射装置的独特的多衍射结构来实现光束衰减控制功能。 这些可变光衰减器（VOA）模块可以是完全惯性的，因为它们可以使用电子可编程亚微秒速度的AO器件实现光增益控制。 这些VOAs在一个光学可逆单元中提供了期望的功能，实现了高动态范围，低损耗，高功率处理，超快速，高光隔离，宽带操作，自调整鲁棒模块。 这些VOA可以基本上独立于入射光的光学偏振，通过使用VOA配置中的独特的固定波片补偿技术来抑制偏振相关损耗。 可以通过控制馈送声光器件的选定频率的频率和电驱动功率来实现几种波长的宽带增益控制操作。 交错器件可以与声光模块级联，以提高整个VOA模块的波长选择性。 替代实施例可以在聚合物分散液晶和声光可调谐滤波器装置中使用电可编程布拉格光栅作为布拉格光栅装置。 使用连接到多个器件换能器的多个驱动信号使用独立控制的布拉格衍射来提出实施例。 驱动信号格式可以是数字，模拟或组合，用于同时驱动VOA模块。 双模VOA模块设计也使用镜像定位来描述。

    Spectroscopic apparatus
    34.
    发明申请
    Spectroscopic apparatus 失效
    光谱仪

    公开(公告)号：US20050046837A1

    公开(公告)日：2005-03-03

    申请号：US10792747

    申请日：2004-03-05

    Applicant: Hirotomo Izumi ,  Hiroshi Nagaeda ,  Nobuaki Mitamura

    Inventor： Hirotomo Izumi ,  Hiroshi Nagaeda ,  Nobuaki Mitamura

    IPC: G01J3/12 ,  G01J3/18 ,  G01J3/26 ,  G01J3/28 ,  G02B6/34 ,  G02B26/00 ,  G02B27/00 ,  G02B27/14 ,  G02F1/01 ,  G02F1/03

    CPC classification number: G02B6/4246 ,  G01J3/0208 ,  G01J3/0286 ,  G01J3/18 ,  G01J3/26 ,  G01J3/2803 ,  G01J2003/1247 ,  G02B6/29311 ,  G02B6/29358 ,  G02B6/29373 ,  G02B6/29395 ,  G02B27/0087 ,  G02B27/1086 ,  G02B27/144 ,  G02F1/0147 ,  G02F1/03 ,  G02F2201/17 ,  G02F2203/055

    Abstract: A spectroscopic apparatus which is compact in size and performs high-precision light-splitting with a large angular dispersion. An optical input-processing section outputs a filtered transmitted light, using a bandpass filter that transmits only wavelength bands at one period of an input light, and collects the filtered transmitted light to generate a collected beam. An optic includes a first reflection surface and a second reflection surface which are high but asymmetric in reflectivity, and causes the collected beam incident thereon to undergo multiple reflections within an inner region between the first reflection surface and the second reflection surface, to thereby cause split beams to be emitted via the second reflection surface. A received light-processing section performs received light processing of the beams emitted from the optic. A control section variably controls at least one of a filter characteristic of the bandpass filter and an optical length through the optic.

    Abstract translation: 一种尺寸紧凑并且具有大角度色散的高精度光分裂的分光装置。 光输入处理部分使用在输入光的一个周期仅发送波长带的带通滤波器来输出经滤波的透射光，并且收集被滤波的透射光以产生收集的光束。 光学元件包括反射率高但不对称的第一反射表面和第二反射表面，并且使入射到其上的收集的光束在第一反射表面和第二反射表面之间的内部区域内经历多次反射，从而导致分裂 经由第二反射面发射的光束。 接收到的光处理部分执行从光学元件发射的光束的接收光处理。 控制部分可变地控制带通滤波器的滤波器特性和通过光学器件的光学长度中的至少一个。

    Low-loss compact reflective turns in optical waveguides
    35.
    发明授权
    Low-loss compact reflective turns in optical waveguides 失效
    光波导中的低损耗紧凑反射匝数

    公开(公告)号：US06862387B2

    公开(公告)日：2005-03-01

    申请号：US10165940

    申请日：2002-06-11

    Applicant: Marta M. Howerton ,  Roger Krahenbuhl ,  Robert P. Moeller

    Inventor： Marta M. Howerton ,  Roger Krahenbuhl ,  Robert P. Moeller

    IPC: G02B6/12 ,  G02B6/122 ,  G02B6/125 ,  G02B6/134 ,  G02F1/225 ,  G02B6/42 ,  G02B6/26

    CPC classification number: G02B6/12002 ,  G02B6/122 ,  G02B6/125 ,  G02B6/1342 ,  G02B2006/12104 ,  G02B2006/12142 ,  G02F1/225 ,  G02F2201/17

    Abstract: This invention pertains to a device and method for making same. The device includes a substrate suitable for supporting pathways for optical signals; separate pathways disposed on the substrate suitable for propagating optical signals, the pathways including an input and an output optical pathway; and a reflective surface in operative contact with the input and output pathways for receiving an optical signal from the input pathway and reflecting the optical signal into the output pathway. The method for making the device includes the steps of providing two separate optical pathways on a single substrate, one being an input pathway and the other being an output pathway; providing a reflective surface in operative contact with the pathways whereby an input optical signal is passed through the input pathway, reflected by the reflective surface into the output pathway, and passed out of the output pathway, whereby the device can be made on a lithium niobate substrate with titanium-diffused pathways with a loss of about 1.0 dB or less, in a space that is at least ⅕ the space required by the same or similar prior art device.

    Abstract translation: 本发明涉及一种用于制造其的装置和方法。 该装置包括适于支持光信号路径的基板; 设置在衬底上的适于传播光信号的分离路径，路径包括输入和输出光路; 以及与输入和输出路径操作接触的反射表面，用于从输入路径接收光信号并将光信号反射到输出路径中。 制造该器件的方法包括以下步骤：在单个衬底上提供两个单独的光学路径，一个是输入路径，另一个是输出路径; 提供与路径操作性接触的反射表面，由此输入光信号通过输入路径，由反射表面反射到输出路径中，并从输出路径中流出，由此该装置可制成铌酸锂 在相同或相似的现有技术装置所需的空间的至少1/5的空间内具有约1.0dB或更小损耗的钛扩散路径的衬底。

    Double pass polarization independent mixer and method using single nonlinear mixer media and off-axis focusing
    38.
    发明授权
    Double pass polarization independent mixer and method using single nonlinear mixer media and off-axis focusing 失效
    双路偏振独立混频器和使用单非线性混频器介质和离轴对焦的方法

    公开(公告)号：US06829097B2

    公开(公告)日：2004-12-07

    申请号：US10410186

    申请日：2003-04-10

    Applicant: Gregory S. Lee

    Inventor： Gregory S. Lee

    IPC: G02B2710

    CPC classification number: G02F1/3501 ,  G02F1/3534 ,  G02F2001/3503 ,  G02F2201/17 ,  G02F2203/06

    Abstract: An apparatus includes a mixer, a combiner and first and second reflectors. The mixer has first and second inputs and has first and second outputs. The combiner includes first and second parts where the first output provides a mixed signal to the first part and the second part provides a combined signal to the second input. The first reflector receives a remaining signal from the first part and provides a reflected composite signal to the second part. The second reflector receives a split off pump signal from the first part and provides a reflected pump signal to the second part.

    Abstract translation: 一种装置包括混合器，组合器以及第一和第二反射器。 混合器具有第​​一和第二输入，并具有第一和第二输出。 组合器包括第一和第二部分，其中第一输出向第一部分提供混合信号，而第二部分向第二输入提供组合信号。 第一反射器从第一部分接收剩余信号，并向第二部分提供反射的复合信号。 第二反射器从第一部分接收分离泵信号，并向第二部分提供反射的泵浦信号。

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