Coherent optical mixer and a method of coherent detection of light
    3.
    发明授权
    Coherent optical mixer and a method of coherent detection of light 有权
    相干光学混合器和光的相干检测方法

    公开(公告)号:US08213752B2

    公开(公告)日:2012-07-03

    申请号:US12480956

    申请日:2009-06-09

    IPC分类号: G02B6/26

    摘要: A coherent planar lightwave circuit (PLC) optical mixer chip is described comprising a matched pair of symmetrical four-coupler interferometers for in-phase and in-quadrature detection of two polarization components of light using a polarization diversity arrangement. The waveguide structure of the chip is symmetrical about two orthogonal central axes of the chip, whereby the effect of temperature gradients on the mixer is reduced. A light traveling from an input to an output of any of the two interferometers is cross-coupled by one of the two couplers it passes through, and is bar-coupled by the other of the two couplers, so as to compensate for polarization, wavelength, and manufacturing process dependence of bar-coupling with that of cross-coupling.

    摘要翻译: 描述了一种相干平面光波电路(PLC)光混合器芯片,其包括一对对称的四耦合干涉仪,用于使用偏振分集装置同时和正交检测光的两个偏振分量。 芯片的波导结构对称于芯片的两个正交中心轴,从而降低了混频器温度梯度的影响。 从两个干涉仪中的任一个的输入到输出的光线交叉耦合,它们通过两个耦合器中的一个耦合,并且被两个耦合器中的另一个耦合器进行棒耦合,以补偿偏振波长 ,并且制造工艺与棒耦合的依赖性与交叉耦合的相关性。

    Asymmetric Mach-Zehnder interferometer having a reduced drive voltage coupled to a compact low-loss arrayed waveguide grating
    4.
    发明授权
    Asymmetric Mach-Zehnder interferometer having a reduced drive voltage coupled to a compact low-loss arrayed waveguide grating 有权
    具有降低的驱动电压的非对称Mach-Zehnder干涉仪耦合到紧凑型低损耗阵列波导光栅

    公开(公告)号:US07715671B2

    公开(公告)日:2010-05-11

    申请号:US11748036

    申请日:2007-05-14

    IPC分类号: G02B6/34 G02B6/26

    摘要: The invention relates to an asymmetric Mach Zehnder Interferometer (MZI) having a reduced drive voltage, coupled to a compact low-loss arrayed waveguide grating (AWG) to provide a broader passband with low ripple. The integrated device has a compact stackable design for improved manufacturing yield. Inputs and outputs of the device are disposed in alignment on opposite sides of a silicon chip with the MZI having an opposite curvature to the AWG. To achieve this alignment, waveguide arms of the MZI are crossed without coupling between them before the optical signal is combined and coupled into the AWG.

    摘要翻译: 本发明涉及一种具有降低驱动电压的非对称马赫曾德干涉仪(MZI),耦合到紧凑型低损耗阵列波导光栅(AWG),以提供具有低纹波的更宽通带。 集成器件具有紧凑的可堆叠设计,可提高制造产量。 器件的输入和输出在硅芯片的相对侧对准地布置,MZI具有与AWG相反的曲率。 为了实现这种对准,在将光信号组合并耦合到AWG之前,MZI的波导臂在它们之间交叉而没有耦合。

    Spectrally Resolved Fast Monitor
    5.
    发明申请
    Spectrally Resolved Fast Monitor 有权
    光谱解析快速监视器

    公开(公告)号:US20090003767A1

    公开(公告)日:2009-01-01

    申请号:US12185893

    申请日:2008-08-05

    IPC分类号: G02B6/28

    摘要: A method and apparatus for monitoring spectral tilt uses an arrayed waveguide grating (AWG) to separate a multiplexed optical signal having a plurality of wavelength channels into a plurality of sub-bands, where each sub-band spans a different wavelength range and includes more than one wavelength channel. A photodetector array is provided to measure the optical power in each of the sub-bands, while control electronics calculate spectral tilt of the multiplexed optical signal using the measured optical power in each of the sub-bands. The spectral tilt monitor in accordance with the instant invention provides spectral resolution, increased monitoring speeds, and decreased manufacturing costs.

    摘要翻译: 用于监测光谱倾斜的方法和装置使用阵列波导光栅(AWG)将具有多个波长信道的复用光信号分离成多个子带,其中每个子带跨越不同的波长范围并且包括多于 一个波长通道。 提供光电检测器阵列以测量每个子带中的光功率,而控制电子装置使用每个子带中的测量光功率来计算多路复用的光信号的频谱倾斜。 根据本发明的光谱倾斜监视器提供光谱分辨率,增加的监视速度和降低的制造成本。

    Process for producing a block copolymer resin and product thereof
    9.
    发明授权
    Process for producing a block copolymer resin and product thereof 失效
    嵌段共聚物树脂的制造方法及其制造方法

    公开(公告)号:US4918145A

    公开(公告)日:1990-04-17

    申请号:US273136

    申请日:1988-11-14

    IPC分类号: C08F297/04

    CPC分类号: C08F297/04

    摘要: A continuous process as disclosed which produces a clear, high impact block copolymer having a vinyl aryl monomer content of at least 70 percent of the block copolymer. This continuous process involves the continuous preparation of a multiblock copolymer which comprises the alternate feeding of monomer streams to a reaction zone wherein a product stream is withdrawn from the polymerization system at the same rate as the total rate of the feed streams.

    摘要翻译: 公开的连续方法,其产生具有至少70%嵌段共聚物的乙烯基芳基单体含量的透明的高冲击嵌段共聚物。 该连续方法包括连续制备多嵌段共聚物,其包括将单体流交替进料到反应区,其中以与进料流的总速率相同的速率从聚合体系中取出产物流。

    HIGH CONFINEMENT WAVEGUIDE ON AN ELECTRO-OPTIC SUBSTRATE
    10.
    发明申请
    HIGH CONFINEMENT WAVEGUIDE ON AN ELECTRO-OPTIC SUBSTRATE 有权
    电子底板上的高配置波导

    公开(公告)号:US20120230630A1

    公开(公告)日:2012-09-13

    申请号:US13467877

    申请日:2012-05-09

    IPC分类号: G02B6/12

    摘要: The invention relates to an optical device including a passive high confinement waveguide, such as of silicon-rich silicon nitride, on an electro-optic substrate, like lithium niobate, optically coupled to a waveguide in the electro-optic substrate. A wide range of electro-optic devices are enabled by this high confinement waveguide structure, including: directional couplers, compact tap couplers, folded electro-optic devices, electro-optic modulators including ring resonators, electro-optic gratings. Further applications enabled by the present invention include hybrid passive planar lightwave circuits (PLC) integrated with electro-optically active waveguides, using the high confinement waveguide as an intermediary waveguide to transfer optical power between the passive and active components.

    摘要翻译: 本发明涉及一种光学器件,其包括光电耦合到光电衬底中的波导的光电衬底上的诸如富硅氮化硅的无源高限制波导,如铌酸锂。 通过这种高约束波导结构实现了广泛的电光器件,包括:定向耦合器,紧凑型分接耦合器,折叠电光器件,包括环形谐振器的电光调制器,电光栅。 通过本发明实现的其他应用包括与电光学有源波导集成的混合无源平面光波电路(PLC),其使用高限制波导作为中间波导来在无源和有源部件之间传递光功率。