公开(公告)号：US06839495B1

公开(公告)日：2005-01-04

申请号：US10111326

申请日：2000-10-25

申请人： Paul Blazkiewicz ,  Danny Wong ,  Wei Xu ,  Thomas Ryan

发明人： Paul Blazkiewicz ,  Danny Wong ,  Wei Xu ,  Thomas Ryan

IPC分类号： G02B6/12 ,  C03B37/012 ,  C03B37/018 ,  G02B6/02 ,  G02F1/01 ,  G02F1/355 ,  G02F1/365 ,  G02F1/383 ,  G02B6/00

CPC分类号： C03B37/01231 ,  C03B37/01892 ,  G02F1/0115 ,  G02F1/3558 ,  G02F1/383 ,  G02F2201/02 ,  G02F2202/07

摘要： An optical waveguide (11) includes a region (22) which, after electrical poling of a guiding region (16), maintains an internal electric field induced by the poling potential. The internal electric field may arise from charge separation between regions (18, 20) induced by an adjacent poling electrode (12A), and region (22) acts to inhibit decay of the space charge and to increase the lifetime of the induced electro-optic effect. The waveguide may comprise a twin hole optical fiber (11) with internal electrodes (12A, 14A), where the region (22) comprises a borosilicate layer concentrically disposed about one of the electrodes.

公开(公告)号：US06704382B1

公开(公告)日：2004-03-09

申请号：US09113580

申请日：1998-07-10

申请人： Steven Metzler ,  Charles Daugherty ,  Thomas Ryan

发明人： Steven Metzler ,  Charles Daugherty ,  Thomas Ryan

IPC分类号： H03D324

CPC分类号： H03L7/12 ,  H03L7/091 ,  H04L7/033

摘要： An improved phase-lock loop circuit comprising a phase detector, a loop filter, and a voltage controlled oscillator. The phase detector samples the phase-lock loop input signal at various points in a cycle of the phase-lock loop output signal and outputs a signal representative of the point of the phase-lock loop output cycle at which a logic state transition of the input signal is detected. In addition, a self-sweeping autolock circuit interacts with the loop filter in such a manner that the self-sweeping autolock circuit commands the loop filter to sweep its output signal when phase-lock is absent and the loop filter halts the sweep of its output signal when phase-lock is acquired.

摘要翻译： 一种改进的锁相环电路，包括相位检测器，环路滤波器和压控振荡器。 相位检测器在锁相环输出信号的周期中的各个点处采样相位锁定环路输入信号，并输出表示锁相环输出周期点的信号，在该点处输入的逻辑状态转换 检测到信号。 此外，自扫描自锁电路与环路滤波器相互作用，使得当相位锁定不存在时，自扫描自动锁定电路命令环路滤波器扫描其输出信号，并且环路滤波器停止其输出的扫描 获取相位锁定时的信号。