公开(公告)号：US20130308663A1

公开(公告)日：2013-11-21

申请号：US13474053

申请日：2012-05-17

申请人： JEFFREY R. CHEN ,  Kenji Numata ,  Stewart T. Wu ,  Guangning Yang

发明人： JEFFREY R. CHEN ,  Kenji Numata ,  Stewart T. Wu ,  Guangning Yang

IPC分类号： H01S3/10

CPC分类号： H01S5/06256 ,  G01S7/484 ,  H01S3/1304 ,  H01S3/1305 ,  H01S5/0687

摘要： An apparatus and method is provided to enable precision and fast laser frequency tuning. For instance, a fast tunable slave laser may be dynamically offset-locked to a reference laser line using an optical phase-locked loop. The slave laser is heterodyned against a reference laser line to generate a beatnote that is subsequently frequency divided. The phase difference between the divided beatnote and a reference signal may be detected to generate an error signal proportional to the phase difference. The error signal is converted into appropriate feedback signals to phase lock the divided beatnote to the reference signal. The slave laser frequency target may be rapidly changed based on a combination of a dynamically changing frequency of the reference signal, the frequency dividing factor, and an effective polarity of the error signal. Feed-forward signals may be generated to accelerate the slave laser frequency switching through laser tuning ports.

摘要翻译： 提供了一种能够实现精确和快速的激光频率调谐的装置和方法。 例如，使用光锁相环可以将快速可调的从属激光器动态地偏置锁定到参考激光线。 从属激光器与参考激光线进行外差，以产生随后频率分频的节拍。 可以检测分割的拍子和参考信号之间的相位差，以产生与相位差成比例的误差信号。 误差信号被转换成适当的反馈信号，以将分频的beatnote锁定到参考信号。 可以基于参考信号的动态变化的频率，分频因子和误差信号的有效极性的组合来快速地改变从属激光频率目标。 可以产生前馈信号，以通过激光调谐端口加速从属激光器频率切换。

公开(公告)号：US20180364359A1

公开(公告)日：2018-12-20

申请号：US15622861

申请日：2017-06-14

申请人： Guangning Yang ,  Jeffrey R. Chen

发明人： Guangning Yang ,  Jeffrey R. Chen

IPC分类号： G01S17/66 ,  H04B10/112 ,  G02B27/10 ,  G02B23/02

CPC分类号： G01S17/66 ,  G02B23/02 ,  G02B27/1006 ,  H04B10/112

摘要： An apparatus for improving a pointing capability of an optical pointing system includes a star tracker attitude control system for maintaining an alignment between the optical pointing system and a target, a beam steering mirror controlled by the star tracker attitude control system to direct an optical signal to impinge on the target, a fixed optical assembly configured to direct a portion of the optical signal from the bean steering mirror into a field of view of a star tracker telescope of the star tracker attitude control system, and a detector array for detecting the portion of the optical signal superimposed over a location in a current star scene in the star tracker telescope field of view, where the star tracker attitude control system is configured to operate the beam steering mirror to maintain the optical signal on the target by maintaining the superimposed signal on the location in the star scene.

公开(公告)号：US09065242B2

公开(公告)日：2015-06-23

申请号：US13474053

申请日：2012-05-17

申请人： Jeffrey R. Chen ,  Kenji Numata ,  Stewart T. Wu ,  Guangning Yang

发明人： Jeffrey R. Chen ,  Kenji Numata ,  Stewart T. Wu ,  Guangning Yang

IPC分类号： H01S3/10 ,  H01S5/0625 ,  G01S7/484 ,  H01S3/13 ,  H01S5/0687

CPC分类号： H01S5/06256 ,  G01S7/484 ,  H01S3/1304 ,  H01S3/1305 ,  H01S5/0687

摘要： An apparatus and method is provided to enable precision and fast laser frequency tuning. For instance, a fast tunable slave laser may be dynamically offset-locked to a reference laser line using an optical phase-locked loop. The slave laser is heterodyned against a reference laser line to generate a beatnote that is subsequently frequency divided. The phase difference between the divided beatnote and a reference signal may be detected to generate an error signal proportional to the phase difference. The error signal is converted into appropriate feedback signals to phase lock the divided beatnote to the reference signal. The slave laser frequency target may be rapidly changed based on a combination of a dynamically changing frequency of the reference signal, the frequency dividing factor, and an effective polarity of the error signal. Feed-forward signals may be generated to accelerate the slave laser frequency switching through laser tuning ports.

摘要翻译： 提供了一种能够实现精确和快速的激光频率调谐的装置和方法。 例如，使用光锁相环可以将快速可调的从属激光器动态地偏置锁定到参考激光线。 从属激光器与参考激光线进行外差，以产生随后频率分频的节拍。 可以检测分割的拍子和参考信号之间的相位差，以产生与相位差成比例的误差信号。 误差信号被转换成适当的反馈信号，以将分频的beatnote锁定到参考信号。 可以基于参考信号的动态变化的频率，分频因子和误差信号的有效极性的组合来快速地改变从属激光频率目标。 可以产生前馈信号，以通过激光调谐端口加速从属激光器频率切换。

公开(公告)号：US09264134B2

公开(公告)日：2016-02-16

申请号：US12239857

申请日：2008-09-29

申请人： David Kerr ,  Mark LaLiberte ,  Avery Van Gieson ,  John Lai ,  Kim Jepsen ,  Wei Lu ,  Yan Han ,  Marc Placidet ,  Ulrik Gliese ,  David Copeland ,  Guangning Yang

发明人： David Kerr ,  Mark LaLiberte ,  Avery Van Gieson ,  John Lai ,  Kim Jepsen ,  Wei Lu ,  Yan Han ,  Marc Placidet ,  Ulrik Gliese ,  David Copeland ,  Guangning Yang

IPC分类号： H04B17/00 ,  H04B10/077 ,  H04B10/071

CPC分类号： H04B10/0773 ,  H04B10/071

摘要： A communication system may include a first control circuit to detect a break on a first optical link; a first optical source to supply a first optical signal on a second optical link in response to detecting the break on the first optical link, the first optical signal propagating in a first direction on the second optical link; a second control circuit to detect a presence of the first optical signal on the second optical link, and output a control signal in response to detecting the presence of the first optical signal; and a second optical source to supply a second optical signal on the second optical link, the second optical signal propagating in a second direction opposite the first direction, where the Raman pump is disabled in response to the control signal.

摘要翻译： 通信系统可以包括用于检测第一光链路上的断点的第一控制电路; 第一光源，用于响应于检测到第一光链路上的断裂而在第二光链路上提供第一光信号，第一光信号在第二光链路上沿第一方向传播; 第二控制电路，用于检测所述第二光链路上的所述第一光信号的存在，并且响应于检测到所述第一光信号的存在而输出控制信号; 以及第二光源，用于在所述第二光链路上提供第二光信号，所述第二光信号在与所述第一方向相反的第二方向上传播，其中所述拉曼泵响应于所述控制信号被禁用。

公开(公告)号：US07062169B2

公开(公告)日：2006-06-13

申请号：US10124397

申请日：2002-04-18

申请人： Greg Mooney ,  Guangning Yang

发明人： Greg Mooney ,  Guangning Yang

IPC分类号： H04B10/08 ,  H04B10/00 ,  H04B10/02 ,  H04B10/04 ,  H04J14/02

CPC分类号： H04B10/695 ,  H03K5/082 ,  H04B10/675

摘要： A system compensates for the presence of power transients. The system receives a data signal and detects the occurrence of a power transient. The system generates a threshold signal based on the detected power transient and determines a value of the data signal based on the threshold signal.

公开(公告)号：US20100080553A1

公开(公告)日：2010-04-01

申请号：US12239857

申请日：2008-09-29

申请人： David Kerr ,  Mark Laliberte ,  Avery Van Gieson ,  John Lai ,  Kim Jepsen ,  Wei Lu ,  Yan Han ,  Marc Placidet ,  Ulrik Gliese ,  David Copeland ,  Guangning Yang

发明人： David Kerr ,  Mark Laliberte ,  Avery Van Gieson ,  John Lai ,  Kim Jepsen ,  Wei Lu ,  Yan Han ,  Marc Placidet ,  Ulrik Gliese ,  David Copeland ,  Guangning Yang

IPC分类号： H04B10/00

CPC分类号： H04B10/0773 ,  H04B10/071

摘要： A communication system may include a first control circuit to detect a break on a first optical link; a first optical source to supply a first optical signal on a second optical link in response to detecting the break on the first optical link, the first optical signal propagating in a first direction on the second optical link; a second control circuit to detect a presence of the first optical signal on the second optical link, and output a control signal in response to detecting the presence of the first optical signal; and a second optical source to supply a second optical signal on the second optical link, the second optical signal propagating in a second direction opposite the first direction, where the Raman pump is disabled in response to the control signal.

摘要翻译： 通信系统可以包括用于检测第一光链路上的断点的第一控制电路; 第一光源，用于响应于检测到第一光链路上的断裂而在第二光链路上提供第一光信号，第一光信号在第二光链路上沿第一方向传播; 第二控制电路，用于检测所述第二光链路上的所述第一光信号的存在，并且响应于检测到所述第一光信号的存在而输出控制信号; 以及第二光源，用于在所述第二光链路上提供第二光信号，所述第二光信号在与所述第一方向相反的第二方向上传播，其中所述拉曼泵响应于所述控制信号被禁用。

公开(公告)号：US06370283B1

公开(公告)日：2002-04-09

申请号：US09182604

申请日：1998-10-29

申请人： Guangning Yang

发明人： Guangning Yang

IPC分类号： G02B2600

CPC分类号： G02F1/225 ,  G02F2203/54

摘要： A method and apparatus is provided for generating optical pulses with an electro-optic amplitude modulator. The modulator includes first and second waveguides that form an optical interferometer. At least the first waveguide includes an electro-optic material such as lithium niobate and an electrode extending along a portion thereof. Input and output optical waveguides are respectively coupled to input and output junctions of the interferometer. A voltage source biases the electrode such that a modulation switching curve arises that generates two optical pulses over a complete voltage cycle.

摘要翻译： 提供了一种用电光振幅调制器产生光脉冲的方法和装置。 调制器包括形成光学干涉仪的第一和第二波导。 至少第一波导包括诸如铌酸锂的电光材料和沿其一部分延伸的电极。 输入和输出光波导分别耦合到干涉仪的输入和输出结。 电压源偏置电极，使得产生在整个电压周期上产生两个光脉冲的调制切换曲线。

公开(公告)号：US06714695B2

公开(公告)日：2004-03-30

申请号：US09953566

申请日：2001-09-17

申请人： Guangning Yang

发明人： Guangning Yang

IPC分类号： G02F101

CPC分类号： G02F1/2255 ,  G02F1/0123 ,  G02F2201/12

摘要： A method of modulating an optical signal is provided comprising the steps of providing a first electric field in a first optical signal path, providing a second electric field in a second optical signal path, transmitting an optical signal along the first optical signal path and the second optical signal path, amplitude modulating the optical signal via the first electric field and the second electric field, and phase modulating the optical signal via the first electric field and the second electric field. A clock source and a data source are ANDed to provide a data modulated RF signal on an offset waveguide electrode for generating the first and second electric fields. The magnitude of the electric field of the first electric field in the first optical signal path is greater than the magnitude of the electric field of the second electric field in the second optical signal path.

摘要翻译： 提供了一种调制光信号的方法，包括以下步骤：在第一光信号路径中提供第一电场，在第二光信号路径中提供第二电场，沿着第一光信号路径发射光信号， 光信号路径，经由第一电场和第二电场对光信号进行幅度调制，以及经由第一电场和第二电场对光信号进行相位调制。 时钟源和数据源被AND进行，以在偏移波导电极上提供数据调制RF信号，以产生第一和第二电场。 第一光信号路径中的第一电场的电场的大小大于第二光信号路径中的第二电场的电场的大小。