LASER ASSEMBLY AND METHOD AND SYSTEM FOR ITS OPERATION
    1.
    发明申请
    LASER ASSEMBLY AND METHOD AND SYSTEM FOR ITS OPERATION 审中-公开
    激光装置及其操作方法和系统

    公开(公告)号:US20110134947A1

    公开(公告)日:2011-06-09

    申请号:US13058467

    申请日:2009-08-11

    IPC分类号: H01S5/068

    摘要: A laser assembly and a method for controlling light output thereof are presented. The laser assembly comprises a semiconductor laser diode having an active region and its associated electric current driver. The electric current driver is controllably operated to excite said active region to induce a certain electric current profile therethrough. The electric current profile corresponds to a desired emission profile from the laser assembly and a desired over heating profile of the active region of the laser diode, while maintaining predetermined temperature range of said active region of the semiconductor laser diode.

    摘要翻译: 提出了激光组件及其光输出控制方法。 激光器组件包括具有有源区和其相关电流驱动器的半导体激光二极管。 电流驱动器被可控地操作以激励所述有源区域以引起通过其中的一定电流分布。 电流曲线对应于来自激光组件的所需发射曲线和激光二极管的有源区域的所需过热分布,同时保持半导体激光二极管的所述有源区的预定温度范围。

    Method and system for obtaining variable optical attenuation with very low polarization dependent loss over an ultra wide dynamic range
    2.
    发明授权
    Method and system for obtaining variable optical attenuation with very low polarization dependent loss over an ultra wide dynamic range 失效
    用于在超宽动态范围内获得具有非常低的偏振相关损耗的可变光衰减的方法和系统

    公开(公告)号:US06856751B2

    公开(公告)日:2005-02-15

    申请号:US10159044

    申请日:2002-06-03

    IPC分类号: G02B6/34 G02B6/00 G01C19/72

    CPC分类号: G02B6/29355 G02B6/266

    摘要: A method and system of operating a variable optical attenuator to provide a required total attenuation in a planar lightwave circuit. The method comprises providing a first Mach-Zehnder interferometer having a first and a second arm carrying signals in an arbitrary polarization state, providing a second Mach-Zehnder interferometer having a third and a fourth arm carrying signals in an arbitrary polarization state, the second Mach-Zehnder interferometer concatenated in tandem with the first Mach-Zehnder interferometer, and cooperatively operating the concatenated first and second Mach-Zehnder interferometers to obtain the required total attenuation and an effectively nil polarization dependent loss.

    摘要翻译: 一种操作可变光衰减器以在平面光波电路中提供所需总衰减的方法和系统。 该方法包括提供具有第一和第二臂的第一马赫 - 曾德尔干涉仪,该第一和第二臂承载任意极化状态的信号,提供第二马赫 - 曾德尔干涉仪,其具有承载任意偏振态的信号的第三和第四臂,第二马赫 -Zehnder干涉仪与第一马赫 - 策德尔干涉仪串联连接,并协同操作级联的第一和第二马赫 - 策德尔干涉仪,以获得所需的总衰减和有效的零极化相关损耗。

    High-tolerance broadband-optical switch in planar lightwave circuits
    3.
    发明授权
    High-tolerance broadband-optical switch in planar lightwave circuits 失效
    平面光波电路中的高容差宽带光开关

    公开(公告)号:US07254299B2

    公开(公告)日:2007-08-07

    申请号:US10763326

    申请日:2004-01-26

    IPC分类号: G02B6/26 G02B6/42

    摘要: Broadband optical switches based on adiabatic couplers having a pair of asymmetric waveguides with variable curvature sections include in a 2×2 configuration based on a Mach-Zehnder interferometer two such adiabatic couplers, and in a 1×2 or 2×1 configuration an adiabatic coupler and an Y-splitter. Each adiabatic coupler includes two waveguide branches of different but constant widths having curved sections with varying radii, separated over a coupling length by a changing spacing therebetween and blending in an asymmetric intersection area, and two symmetric branches. In the 2×2 switch, the two adiabatic couplers face each other with their respective symmetric branches, and are connected by the two identical arms along a main propagation axis in a mirror image. The utilization of the variable curvature adiabatic couplers in silica MZI switches on a silicon substrate provides switches with an exceptional broadband range (1.2-1.7 μm), very high extinction ratios (>35 dB), low fabrication sensitivity and polarization independent operation. The switches are significantly smaller than known broadband switches, have significantly smaller excess loss, faster switching time and low power consumption.

    摘要翻译: 基于具有可变曲率部分的一对不对称波导的绝热耦合器的宽带光开关包括基于Mach-Zehnder干涉仪的两个这样的绝热耦合器的2x2配置,并且在1x2或2x1配置中具有绝热耦合器和Y分路器。 每个绝热耦合器包括具有不同但恒定宽度的两个波导分支,其具有变化的半径的弯曲部分,通过其间的间隔改变在耦合长度上分离,并且在非对称交叉区域和两个对称分支中混合。 在2x2开关中,两个绝热耦合器以相应的对称分支彼此面对,并且通过两个相同的臂沿镜像中的主传播轴线连接。 利用硅二极管MZI中的可变曲率绝热耦合器可以提供具有特殊宽带范围(1.2-1.7μm),非常高的消光比(> 35dB),低制造灵敏度和极化独立操作的开关。 这些开关明显小于已知的宽带交换机,具有显着更小的超量损耗,更快的开关时间和低功耗。