公开(公告)号：US20060018591A1

公开(公告)日：2006-01-26

申请号：US11235618

申请日：2005-09-26

申请人： Kamyar Ghandi ,  Nesbitt Hagood ,  Timothy Glenn

发明人： Kamyar Ghandi ,  Nesbitt Hagood ,  Timothy Glenn

IPC分类号： G02B6/26

CPC分类号： G02B6/3502 ,  G02B6/3556 ,  G02B6/3558 ,  G02B6/3578 ,  G02B6/359 ,  H04Q11/0005 ,  H04Q2011/003 ,  H04Q2011/0039 ,  H04Q2011/0049

摘要： A free space optical switch that uses both an open loop control mode and a closed loop control mode. The open loop control mode is used to transition to a state where at least some light is sensed at a destination port. A closed loop control mode is then used, whereby a series of controlled dither signals are adjusted for system dynamics. Modifying the dither signals in this matter allows moving actuators at a rate that is much closer to the natural frequency of the underlying system, and hence speeds up the system convergence process. Variable modulation amplitudes may be employed on the dither signals to maximize convergence speed. In particular, changes in the dither signal can be made in accordance with the change in amplitude as a function of a gradient along a parabola that models the optical system response. According to still further aspects, the dither signals may be compensated for a desired and selectable attenuation level of output optical power.

摘要翻译： 一种使用开环控制模式和闭环控制模式的自由空间光开关。 开环控制模式用于转换到在目的地端口处感测至少一些光的状态。 然后使用闭环控制模式，由此针对系统动态调整一系列受控抖动信号。 在此事项中修改抖动信号允许以更接近底层系统固有频率的速度移动执行器，从而加快系统收敛过程。 可以在抖动信号上采用可变调制幅度来最大化收敛速度。 特别地，抖动信号的变化可以根据作为对抛物线的梯度的函数的幅度变化进行，该抛物线对光学系统响应进行建模。 根据另外的方面，抖动信号可被补偿输出光功率的期望和可选择的衰减水平。

公开(公告)号：US20060188194A1

公开(公告)日：2006-08-24

申请号：US11063453

申请日：2005-02-23

申请人： Kamyar Ghandi ,  Timothy Glenn

发明人： Kamyar Ghandi ,  Timothy Glenn

IPC分类号： G02B6/26

CPC分类号： G02B6/3508 ,  G02B6/266 ,  G02B6/3544 ,  G02B6/3586 ,  G02B6/3594 ,  G02B6/3598

摘要： A controller in an optical switch providing optical coupling of an optical signal between a source port and a target port employs, in at least one axis, gradient control using a feedback loop that compensates for alignment error between a source port and a target port in an optical switch. In at least one other axis, the controller generates a control input according to a control law that results in variable attenuation of optical coupling between the source port and the target port in the optical switch. A dither signal may be applied to the control input in the at least one other axis. Amplitude of the applied dither signal may be varied.

摘要翻译： 在光源端口和目标端口之间提供光信号的光耦合的光开关中的控制器在至少一个轴上采用使用补偿在源端口和目标端口之间的对准误差的反馈环路的梯度控制 光开关。 在至少另一轴中，控制器根据控制规律产生控制输入，该控制规则导致光开关中的源端口和目标端口之间的光耦合的可变衰减。 抖动信号可以施加到至少一个其它轴中的控制输入。 施加的抖动信号的幅度可以变化。