公开(公告)号：US06885791B2

公开(公告)日：2005-04-26

申请号：US09970343

申请日：2001-10-03

申请人： Tong Xie ,  Yakov Sidorin ,  Falgun Patel ,  Ralph Henry Page

发明人： Tong Xie ,  Yakov Sidorin ,  Falgun Patel ,  Ralph Henry Page

IPC分类号： G02B6/12 ,  G02B6/122 ,  G02B6/26 ,  G02F1/035 ,  G02B6/34

CPC分类号： G02F1/035 ,  G02B6/12004 ,  G02B6/12007 ,  G02B6/122 ,  G02B6/266 ,  G02B2006/12107 ,  G02B2006/12164 ,  G02F2201/305 ,  G02F2203/055 ,  G02F2203/48 ,  G02F2203/585

摘要： An integrated-optic attenuator/equalizer device comprising a photorefractive substrate, at least one optical waveguide channel formed in the substrate, at least one diffractive-Bragg grating formed in the substrate, and a diffractive-Bragg grating modulator that is capable of modulating the diffractive Bragg grating(s). The diffractive-Bragg grating(s) intersects the optical waveguide channel. When a diffractive-Bragg grating formed in the substrate is modulated, at least a fraction of light of a wavelength associated with the modulated diffractive-Bragg grating is re-directed by the modulated diffractive-Bragg grating, thereby preventing the re-directed fraction of light from arriving at the output of the optical waveguide channel. Multiple diffractive-Bragg gratings may be implemented in the integrated-optic device, each having a particular wavelength associated therewith, and the diffractive-Bragg gratings may be simultaneously or independently modulated to control the fractions of light of different wavelengths that arrive at the output of the optical waveguide channel.

摘要翻译： 一种集成光衰减器/均衡器装置，包括光折射基板，形成在基板中的至少一个光波导通道，形成在基板中的至少一个衍射 - 布拉格光栅，以及能够调制衍射的衍射 - 布拉格光栅调制器 布拉格光栅（s）。 衍射 - 布拉格光栅与光波导通道相交。 当在衬底中形成的衍射 - 布拉格光栅被调制时，与调制的衍射 - 布拉格光栅相关联的至少一部分波长的光被调制的衍射 - 布拉格光栅重新导向，从而防止了 光到达光波导通道的输出。 多个衍射 - 布拉格光栅可以在集成光学器件中实现，每个具有与其相关联的特定波长，并且衍射 - 布拉格光栅可以被同时或独立地调制以控制到达输出的不同波长的光的分数 光波导通道。

公开(公告)号：US06567589B2

公开(公告)日：2003-05-20

申请号：US09970344

申请日：2001-10-03

申请人： Yakov Sidorin ,  Tong Xie ,  Ralph Henry Page ,  Falgun Patel

发明人： Yakov Sidorin ,  Tong Xie ,  Ralph Henry Page ,  Falgun Patel

IPC分类号： G02B634

CPC分类号： G02B6/12007 ,  G02B6/124 ,  G02B2006/12107 ,  G02F1/035 ,  G02F2201/305 ,  G02F2202/13

摘要： An integrated-optic device comprising a photorefractive substrate, an optical waveguide channel and at least one diffractive Bragg grating integrated in the substrate and intersecting the optical waveguide channel. The diffractive Bragg grating(s) causes at least a fraction of light coupled into the optical waveguide channel to be coupled out of the optical waveguide channel.

摘要翻译： 一种包括光折射基板，光波导通道和集成在基板中并与光波导通道相交的至少一个衍射布拉格光栅的集成光学器件。 衍射布拉格光栅使得耦合到光波导通道中的光的至少一部分光耦合到光波导通道外。

公开(公告)号：US20050226590A1

公开(公告)日：2005-10-13

申请号：US10819812

申请日：2004-04-07

申请人： Falgun Patel ,  Jeffrey Miller

发明人： Falgun Patel ,  Jeffrey Miller

IPC分类号： C03C13/04 ,  G02B6/00 ,  G02B6/12 ,  G02B6/26 ,  G02B6/42

CPC分类号： G02B6/266 ,  C03C13/048 ,  G02B6/4204 ,  G02B2006/1208 ,  G02F2203/48

摘要： A variable optical attenuator including a loss element and a rare earth doped gain element in optical communication with the loss element, the rare earth doped gain element having a gain responsive to an optical pump.

摘要翻译： 一种可变光衰减器，包括与损耗元件光通信的损耗元件和稀土掺杂增益元件，稀土掺杂增益元件具有响应光泵的增益。

公开(公告)号：US20050225842A1

公开(公告)日：2005-10-13

申请号：US10819666

申请日：2004-04-07

申请人： Falgun Patel ,  Jeffrey Miller

发明人： Falgun Patel ,  Jeffrey Miller

IPC分类号： H01S3/00 ,  H01S3/063

CPC分类号： H01S3/0635 ,  H01S2301/04

摘要： A flattened gain amplifier has a waveguide with a core doped with at least one species of rare earth ion. The rare earth ion has a gain profile with a first gain in a first wavelength band and a second gain in a second wavelength band. The flattened gain amplifier also has a first grating and a reflective element optically coupled to the core. The positions of the first grating and reflective element along the length define a first amplifying length and a second amplifying length. The ratio of the first amplifying length to the second amplifying length is about equal to the ratio of the second gain to the first gain.

摘要翻译： 扁平化增益放大器具有掺杂有至少一种稀土离子的芯的波导。 稀土离子具有在第一波长带中具有第一增益并且在第二波长带中具有第二增益的增益分布。 扁平化增益放大器还具有光学耦合到芯的第一光栅和反射元件。 沿着长度的第一光栅和反射元件的位置限定第一放大长度和第二放大长度。 第一放大长度与第二放大长度之比约等于第二增益与第一增益的比值。

公开(公告)号：US06479958B1

公开(公告)日：2002-11-12

申请号：US08736020

申请日：1996-10-22

申请人： Stephen S. Thompson ,  Paul G. Huber ,  Falgun Patel

发明人： Stephen S. Thompson ,  Paul G. Huber ,  Falgun Patel

IPC分类号： H02P729

CPC分类号： B25F5/00 ,  H02H7/0854 ,  H02H7/0858 ,  Y10S388/937

摘要： A rapid increase in motor current (di/dt above a predetermined threshold) causes the motor control system to enter pulse mode operation in-which the motor current is pulsed on and off rapidly to dislodge the workpiece obstruction or binding condition that would otherwise lead to a motor stall. When the workpiece obstruction or binding has been cleared, the motor resumes normal operation.

摘要翻译： 电动机电流的快速增加（di / dt高于预定阈值）使得电动机控制系统进入脉冲模式操作，其中电动机电流被快速脉冲地打开和关闭，以移除工件阻塞或结合条件，否则将导致 电机档。 当工件阻塞或装订被清除时，电机恢复正常运行。

公开(公告)号：US20080107376A1

公开(公告)日：2008-05-08

申请号：US11968860

申请日：2008-01-03

申请人： Falgun Patel ,  Jeffrey Miller

发明人： Falgun Patel ,  Jeffrey Miller

IPC分类号： G02B6/26

CPC分类号： H01S3/06754 ,  H01S3/10007

摘要： The present invention provides an optical switch including a loss element having a signal loss, and a rare earth doped gain element optically connected in series with the loss element. The rare earth doped gain element is operable to produce a signal gain. The signal gain and the signal loss are about equal. The present invention also provides a method of optical switching including optically connecting a loss element in series with a rare earth doped gain element and passing an optical signal through the loss element and the gain element. The loss element attenuates the optical signal by a first amount. The method further includes selectively applying an optical pump to the gain element to perform the switching, the gain element amplifying the optical signal by the first amount in response to the optical pump.

摘要翻译： 本发明提供了一种光开关，其包括具有信号损耗的损耗元件和与损耗元件串联光学连接的稀土掺杂增益元件。 稀土掺杂增益元件可操作以产生信号增益。 信号增益和信号损耗大致相等。 本发明还提供一种光学切换的方法，包括将稀土元素与稀土掺杂的增益元件串联光学连接并使光信号通过损耗元件和增益元件。 损耗元件将光信号衰减第一量。 该方法还包括选择性地将光泵施加到增益元件以执行切换，增益元件响应光泵将光信号放大第一量。

公开(公告)号：US20050225839A1

公开(公告)日：2005-10-13

申请号：US10820098

申请日：2004-04-07

申请人： Falgun Patel ,  Jeffrey Miller

发明人： Falgun Patel ,  Jeffrey Miller

IPC分类号： G02B6/34 ,  H01S3/00 ,  H01S3/067

CPC分类号： H01S3/06754 ,  H01S3/10007

摘要： The present invention provides an optical switch including a loss element having a signal loss, and a rare earth doped gain element optically connected in series with the loss element. The rare earth doped gain element is operable to produce a signal gain. The signal gain and the signal loss are about equal. The present invention also provides a method of optical switching including optically connecting a loss element in series with a rare earth doped gain element and passing an optical signal through the loss element and the gain element. The loss element attenuates the optical signal by a first amount. The method further includes selectively applying an optical pump to the gain element to perform the switching, the gain element amplifying the optical signal by the first amount in response to the optical pump.

摘要翻译： 本发明提供了一种光开关，其包括具有信号损耗的损耗元件和与损耗元件串联光学连接的稀土掺杂增益元件。 稀土掺杂增益元件可操作以产生信号增益。 信号增益和信号损耗大致相等。 本发明还提供一种光学切换的方法，包括将稀土元素与稀土掺杂的增益元件串联光学连接并使光信号通过损耗元件和增益元件。 损耗元件将光信号衰减第一量。 该方法还包括选择性地将光泵施加到增益元件以执行切换，增益元件响应光泵将光信号放大第一量。

公开(公告)号：US20050225815A1

公开(公告)日：2005-10-13

申请号：US10819827

申请日：2004-04-07

申请人： Falgun Patel ,  Jeffrey Miller

发明人： Falgun Patel ,  Jeffrey Miller

IPC分类号： G02B6/122 ,  G03H1/00 ,  H01S3/063 ,  H01S3/16

CPC分类号： G02B6/122 ,  H01S3/0632 ,  H01S3/0637 ,  H01S3/1608 ,  H01S3/1618 ,  H01S3/2308

摘要： The optical amplifier has a waveguide including a core and a cladding. The cladding at least partially surrounds the core and is doped with at least one species of rare earth ion in the range of 5 to 75 wt %. In another embodiment, the core is doped with Er3+ in the range of 7 to 9 wt % and with Yb3+ in the range of 11 to 13 wt %.

摘要翻译： 光放大器具有包括芯和包层的波导。 所述包层至少部分地包围所述芯并且掺杂有至少一种在5至75重量％范围内的稀土离子。 在另一个实施方案中，核心掺杂有7至9重量％范围内的Er 3+和11至13重量％的Yb 3+。