Optical channel monitor
    2.
    发明授权
    Optical channel monitor 有权
    光通道监视器

    公开(公告)号:US09031404B2

    公开(公告)日:2015-05-12

    申请号:US12545591

    申请日:2009-08-21

    摘要: A method of monitoring a WDM optical signal is provided. The method includes: receiving a WDM optical signal having a plurality of channels; detecting the optical signal after filtering the WDM optical signal with a tunable filter; and reconfiguring at least the center wavelength and bandwidth of the tunable filter optical transfer function to determine a signal performance parameter of the WDM optical signal.

    摘要翻译: 提供了一种监测WDM光信号的方法。 该方法包括:接收具有多个信道的WDM光信号; 在用可调谐滤波器滤波WDM光信号后检测光信号; 以及至少重新配置可调滤波器光传递函数的中心波长和带宽,以确定WDM光信号的信号性能参数。

    Optical processing device employing a digital micromirror device (DMD) and having reduced wavelength dependent loss
    3.
    发明授权
    Optical processing device employing a digital micromirror device (DMD) and having reduced wavelength dependent loss 有权
    采用数字微镜器件(DMD)并具有降低的波长相关损耗的光学处理器件

    公开(公告)号:US08681422B2

    公开(公告)日:2014-03-25

    申请号:US13325555

    申请日:2011-12-14

    IPC分类号: G02B5/18

    摘要: An optical arrangement includes an actuatable optical element and a compensating optical element. The actuatable optical element is provided to receive an optical beam having a plurality of spatially separated wavelength components and diffract the plurality of wavelength components in a wavelength dependent manner. The compensating optical element directs the optical beam to the actuatable optical element. The compensating optical element compensates for the wavelength dependent manner in which the wavelength components are diffracted by the actuatable optical element.

    摘要翻译: 光学装置包括可致动的光学元件和补偿光学元件。 提供可致动光学元件以接收具有多个空间分离的波长分量的光束,并以波长依赖的方式衍射多个波长分量。 补偿光学元件将光束引导到可致动的光学元件。 补偿光学元件补偿波长分量被可致动光学元件衍射的波长相关方式。

    SPATIAL LIGHT MODULATOR (SLM)-BASED OPTICAL ATTENUATOR
    4.
    发明申请
    SPATIAL LIGHT MODULATOR (SLM)-BASED OPTICAL ATTENUATOR 有权
    空间光调制器(SLM) - 光学衰减器

    公开(公告)号:US20100039694A1

    公开(公告)日:2010-02-18

    申请号:US12192952

    申请日:2008-08-15

    IPC分类号: G02B26/00

    摘要: A method and apparatus are provided for attenuating an optical beam. The method includes selecting a level of attenuation to be applied to the optical beam. A pattern of on-state and off-state pixels in a two dimensional spatial light modulator (SLM) is selected such that the pattern will modulate the optical beam to provide the selected level of attenuation. Finally, the optical beam is directed onto the SLM while tile pixels are arranged in the selected pattern. The pattern is periodic along a first axis and symmetric along a second axis along which an intensity distribution of die optical beam extends.

    摘要翻译: 提供一种用于衰减光束的方法和装置。 该方法包括选择要施加到光束的衰减水平。 选择二维空间光调制器(SLM)中的导通状态和截止状态像素的图案,使得图案将调制光束以提供所选择的衰减水平。 最后,光束被引导到SLM上,而瓦片像素以选定的图案排列。 该图案沿着第一轴线是周期性的,并且沿着第二轴对称,模具光束的强度分布沿该第二轴延伸。

    Tunable optical routing systems
    5.
    发明授权
    Tunable optical routing systems 有权
    可调光路由系统

    公开(公告)号:US07257288B1

    公开(公告)日:2007-08-14

    申请号:US11113822

    申请日:2005-04-25

    IPC分类号: G02B6/28

    摘要: An optical wavelength routing device utilizes a free space optical beam propagating therethrough is provided. The device includes at least one optical fiber input, at least one optical fiber output, an optical element having an actuator with at least one tilt axis and a diffraction element having a surface thereon. The device also includes an optical beam-splitting element having spatially varying optical properties. An optical beam transfer arrangement is positioned between the optical element and the diffraction element such that tilt actuation of the optical element elicits a proportional change in an angle of incidence of the optical beam onto the diffraction element, wherein the center of rotation for the angular change is the surface of the diffraction element. Optical routing between the fiber input and the fiber output can be configured by the positioning of the optical element.

    摘要翻译: 提供了利用通过其传播的自由空间光束的光波长路由设备。 该装置包括至少一个光纤输入,至少一个光纤输出,具有至少一个倾斜轴的致动器的光学元件和在其上具有表面的衍射元件。 该装置还包括具有空间变化的光学特性的光束分离元件。 光束传递装置位于光学元件和衍射元件之间,使得光学元件的倾斜致动引起光束到衍射元件的入射角的成比例的变化,其中角度变化的旋转中心 是衍射元件的表面。 光纤输入和光纤输出之间的光路由光学元件的定位可以配置。

    Flicker reduction in an LCoS array

    公开(公告)号:US09881567B2

    公开(公告)日:2018-01-30

    申请号:US14686163

    申请日:2015-04-14

    申请人: NISTICA, INC.

    IPC分类号: G09G3/36 G09G3/20

    摘要: A method is provided for reducing flicker arising in pixels along an axis of a liquid-crystal based array such as a LCoS array. The pixels along the axis exhibit a common gray scale level. In accordance with the method, a plurality of digital data command sequences are selected that each drive a pixel at the common gray scale level. A first of the plurality of digital data command sequences is applied to a first pixel along the axis. A second of the plurality of digital data command sequences is applied to a second pixel along the axis. The second pixel is adjacent to the first pixel. The first and second digital command sequences give rise to voltages being applied to the two pixels which have frequency components that are opposite in phase and equal in magnitude.

    Large scale optical switch using asymmetric 1×2 elements

    公开(公告)号:US09778421B2

    公开(公告)日:2017-10-03

    申请号:US14883051

    申请日:2015-10-14

    申请人: NISTICA, INC.

    IPC分类号: G02B6/35 G02B6/032

    摘要: An optical switching arrangement includes a plurality of input and output waveguides. Each of the input waveguides has a first plurality of 1×2 optical switches associated therewith and extending therealong. Each of the output waveguides has a second plurality of 1×2 optical switches associated therewith and extending therealong. Each of the first and second plurality of optical switches is selectively switchable between a through-state and a cross-state. The input and output waveguides are arranged such that optical losses arising for any wavelength of light only depend on a length of segments of the input and output waveguides located between adjacent ones of the 1×2 optical switches. Each of the first plurality of optical switches associated with each of the input waveguides is optically coupled to one of the second plurality of optical switches in a different one of the output waveguides when both optical switches are in the cross-state.

    Crosstalk suppression in a multi-photodetector optical channel monitor

    公开(公告)号:US09755738B2

    公开(公告)日:2017-09-05

    申请号:US14540608

    申请日:2014-11-13

    申请人: Nistica, Inc.

    摘要: An optical device includes an optical port array having first and second optical inputs for receiving optical beams and a first plurality of optical outputs associated with switching functionality and a second plurality of optical outputs associated with channel monitoring functionality. A dispersion element receives the optical beam from an input and spatially separates the beam into a plurality of wavelength components. The focusing element focuses the wavelength components. The optical path conversion system receives the plurality of wavelength components and selectively directs each one to a prescribed one of the optical ports. The photodetectors are each associated with one of the optical outputs in the second plurality of optical outputs and receive a wavelength component therefrom. The controller causes the optical path conversion system to simultaneously direct each of the wavelength components to a different one of the optical outputs of the second plurality of optical outputs.

    Optical processing device
    9.
    发明授权
    Optical processing device 有权
    光学处理装置

    公开(公告)号:US08693818B2

    公开(公告)日:2014-04-08

    申请号:US13234089

    申请日:2011-09-15

    IPC分类号: G02B6/26 G02B15/00

    摘要: Provided is an optical processing device including: a beam emission portion which comprises a plurality of optical fibers; a plurality of collimating lenses to which a beam emitted from the optical fibers are incident; a dispersion element which disperses the beam emitted from one optical fiber among the plurality of optical fibers; and an optical path conversion optical system which converts an optical path of the beam passing through the dispersion element and allows the beam to be incident to another optical fiber among the plurality of optical fibers, wherein the plurality of collimating lenses is installed in series in the optical path direction of the beam emitted from the optical fiber, and wherein a distance between at least two collimating lenses are adjustable in the optical path direction.

    摘要翻译: 提供了一种光学处理装置,包括:光束发射部分,其包括多个光纤; 从光纤发射的光束入射的多个准直透镜; 分散从多个光纤中的一根光纤发出的光束的色散元件; 以及光路转换光学系统,其转换通过色散元件的光束的光路,并允许光束入射到多个光纤中的另一光纤,其中多个准直透镜被串联安装在 从光纤发射的光束的光路方向,并且其中至少两个准直透镜之间的距离在光路方向上是可调节的。

    Optical processing device
    10.
    发明授权
    Optical processing device 有权
    光学处理装置

    公开(公告)号:US08531756B2

    公开(公告)日:2013-09-10

    申请号:US13234085

    申请日:2011-09-15

    IPC分类号: G02B26/00

    摘要: A method and apparatus is provided for processing an optical beam. The method includes spatially dispersing an optical beam received from an optical port into a plurality of wavelength components. The wavelength components are focused and at least one of the components is selectively directed to one of the optical ports by reflecting the focused wavelength component at least twice from a DMD before being directed to a selected one of the optical ports. A resolution of the focused wavelength component is optimized when it is reflected from the DMD a first or second time at the expense of the other time when it is reflected.

    摘要翻译: 提供了一种用于处理光束的方法和装置。 该方法包括将从光端口接收的光束空间分散成多个波长分量。 波长分量被聚焦,并且通过在被引导到所选择的一个光学端口之前将聚焦波长分量从DMD反射至少两次,从而有选择地将部件中的至少一个指向一个光学端口。 聚焦波长分量的分辨率在DMD第一次或第二次反射时以牺牲反射的其他时间为代价进行了优化。