公开(公告)号：US08351117B2

公开(公告)日：2013-01-08

申请号：US12329928

申请日：2008-12-08

申请人： Peiliang Gao

发明人： Peiliang Gao

IPC分类号： G02B27/28

CPC分类号： G02F1/093 ,  G02B6/2746 ,  G02F1/0136 ,  G02F1/0311 ,  G02F1/0327 ,  G02F2201/38 ,  G02F2202/28 ,  G02F2203/48

摘要： An integrated optical device functioning as optical isolator, shutter, variable optical attenuator, and modulator is disclosed. The device employs a Pockels cell for dynamically rotating with nanosecond speed the polarization state of incident light for attenuation and modulation. The invention provides a compact, high performance and reliable device without moving parts for use in laser systems and particularly in fiber optic telecommunication system.

摘要翻译： 公开了用作光隔离器，快门，可变光衰减器和调制器的集成光学器件。 该器件采用Pockels单元，以纳秒速度动态旋转入射光的偏振态，用于衰减和调制。 本发明提供了一种紧凑，高性能和可靠的设备，无需移动部件，用于激光系统，特别是在光纤通信系统中。

公开(公告)号：US08687267B2

公开(公告)日：2014-04-01

申请号：US12391997

申请日：2009-02-24

申请人： Peiliang Gao

发明人： Peiliang Gao

IPC分类号： G02F1/33 ,  G02F1/11 ,  G01J3/12 ,  G02F1/125

CPC分类号： G02F1/125 ,  G01J3/1256 ,  G02F1/11 ,  G02F1/116 ,  G02F1/29

摘要： An acousto-optical tunable filter is disclosed. The filter includes a medium having one or more indices of refractions alterable by the application of acoustic waves to the medium. The filter also includes an acoustic transducer coupled to the medium to generate the acoustic waves Altering the frequency of the acoustic wave selects among the different wavelengths in the incident light ray. The device also includes an optical mirror for reflecting a wave diffracted by the medium back to the medium so that it can again be diffracted. The first diffracted wave has its frequency shifted in one direction by the frequency of the acoustic wave while the second diffracted wave has its frequency shifted in the opposite direction, thereby compensating for the first shift. The result is an output ray with little or no frequency shift.

摘要翻译： 公开了一种声光可调谐滤波器。 过滤器包括具有一个或多个折射指数的介质，所述折射指数可以通过将声波施加到介质而改变。 滤波器还包括耦合到介质以产生声波的声换能器改变在入射光线中的不同波长之间的声波选择的频率。 该装置还包括用于将由介质衍射的波反射回介质的光学镜，使得其可以再次衍射。 第一衍射波在一个方向上以声波的频率偏移，而第二衍射波在相反方向上频移，从而补偿第一偏移。 结果是输出光线很少或没有频移。

公开(公告)号：US20130114138A1

公开(公告)日：2013-05-09

申请号：US13723524

申请日：2012-12-21

申请人： Peiliang Gao

发明人： Peiliang Gao

IPC分类号： G02F1/09

CPC分类号： G02F1/093 ,  G02B6/2746 ,  G02F1/0136 ,  G02F1/0311 ,  G02F1/0327 ,  G02F2201/38 ,  G02F2202/28 ,  G02F2203/48

摘要： An integrated optical device functioning as optical isolator, shutter, variable optical attenuator, and modulator is disclosed. The device employs a Pockels cell for dynamically rotating with nanosecond speed the polarization state of incident light for attenuation and modulation. The invention provides a compact, high performance and reliable device without moving parts for use in laser systems and particularly in fiber optic telecommunication system.

摘要翻译： 公开了用作光隔离器，快门，可变光衰减器和调制器的集成光学器件。 该器件采用Pockels单元，以纳秒速度动态旋转入射光的偏振态，用于衰减和调制。 本发明提供了一种紧凑，高性能和可靠的设备，无需移动部件，用于激光系统，特别是在光纤通信系统中。

公开(公告)号：US08452180B2

公开(公告)日：2013-05-28

申请号：US12436103

申请日：2009-05-05

申请人： Peiliang Gao

发明人： Peiliang Gao

IPC分类号： H04J14/02

CPC分类号： H04J14/0209 ,  H04J14/021 ,  H04J14/0219

摘要： A scalable reconfigurable (or tunable) optical add/drop multiplexer (SROADM) is disclosed. The SROADM includes a pair of acoustic optic tunable filters (AOTF) and a wavelength blocker (WB). A first input port receives an initial wavelength division multiplexer (WDM) optical signal including to-be-dropped optical signal(s). A second input port(s) receives optical signal(s) to be added, which has the same wavelength(s) as that optical signal(s) to be dropped. In one embodiment, the WB is connected to the AOTFs through free space coupling. In another embodiment, the coupling is achieved by optical fiber fusion splicing. The latter method has advantage of using commercially available products and easier assembly while a more compact size is achievable by the free space coupling. The device is scalable in terms of number of add/drop ports and capacity to process any number of wavelength channels.

摘要翻译： 公开了可扩展的可重配置（或可调谐）光分插复用器（SROADM）。 SROADM包括一对声光可调谐滤波器（AOTF）和波长阻挡器（WB）。 第一输入端口接收包括被丢弃的光信号的初始波分多路复用器（WDM）光信号。 第二输入端口接收待添加的光信号，其具有与要丢弃的光信号相同的波长。 在一个实施例中，WB通过自由空间耦合连接到AOTF。 在另一实施例中，通过光纤熔接实现耦合。 后一种方法具有使用市售产品和更容易组装的优点，而通过自由空间耦合可实现更紧凑的尺寸。 该设备可以根据添加/删除端口的数量和处理任意数量的波长信道的容量进行扩展。

公开(公告)号：US08369367B1

公开(公告)日：2013-02-05

申请号：US12411667

申请日：2009-03-26

申请人： Peiliang Gao

发明人： Peiliang Gao

IPC分类号： H01S3/117

CPC分类号： H01S3/1068 ,  H01S5/0687 ,  H01S5/141

摘要： A tunable laser system utilizes a frequency shift compensated acousto-optic tunable filter. The wavelength accuracy and stability is achieved by a wavelength locker utilizing two separate intracavity light beams without the need to use beam splitters to significantly reduce the space typically needed by a conventional wavelength locker, and provide more stable operation and easy assembly. The acoustic optical tunable filter includes an acousto-optical crystal with a transducer coupled to the crystal to generate acoustic waves, and an optical mirror to reflect the diffracted light beam back to the acousto-optical medium again such that the frequency shift by two diffractions is compensated. By using different laser gain mediums, acoustic wave driving frequencies and acousto-optical crystals, this invention can be used to make tunable lasers in wide range of optical wavelengths for many different applications.

摘要翻译： 可调谐激光系统使用频移补偿声光可调滤波器。 通过使用两个单独的腔内光束的波长锁定器实现波长精度和稳定性，而不需要使用分束器来显着地减少常规波长锁定器通常需要的空间，并提供更稳定的操作和容易的组装。 声光可调谐滤波器包括具有耦合到晶体以产生声波的换能器的声光晶体，以及光学镜，以将衍射光束再次反射回到声光介质，使得通过两次衍射的频移为 补偿。 通过使用不同的激光增益介质，声波驱动频率和声光晶体，本发明可以用于在许多不同应用的光波长范围内制造可调激光器。

公开(公告)号：US07873081B1

公开(公告)日：2011-01-18

申请号：US12272324

申请日：2008-11-17

申请人： Peiliang Gao

发明人： Peiliang Gao

IPC分类号： H01S3/10

CPC分类号： H01S5/141 ,  G02F1/116 ,  G02F1/332 ,  H01S3/082 ,  H01S3/1068 ,  H01S3/1303 ,  H01S3/1392

摘要： A tunable laser cavity utilizes a dispersion compensated acousto-optic tunable filter. The wavelength accuracy and stability is achieved by a wavelength locker utilizing two separate intracavity light beams without the need to use beam splitters to significantly reduce the space typically needed by a conventional wavelength locker, and provide more stable operation and easy assembly. The acoustic optical tunable filter is constructed in such a way that two transducers are bonded on the same crystal opposite to each other to create two counter propagating acoustic waves. Dispersion occurs after the collimated light diffracted by the first acoustic wave and is compensated by the second acoustic wave traveling in the opposite direction. By using different laser gain mediums, acoustic wave driving frequencies and acousto-optical crystals, this invention can be used to make tunable lasers in wide range of optical wavelengths.

摘要翻译： 可调激光腔使用色散补偿声光可调谐滤波器。 通过使用两个单独的腔内光束的波长锁定器实现波长精度和稳定性，而不需要使用分束器来显着减少常规波长锁定器通常需要的空间，并且提供更稳定的操作和容易的组装。 声光可调谐滤波器的构造方式是使两个换能器相互结合在同一个晶体上以产生两个反向传播的声波。 在由第一声波衍射的准直光之后发生色散，并且通过沿相反方向行进的第二声波来补偿。 通过使用不同的激光增益介质，声波驱动频率和声光晶体，本发明可用于制造宽范围的光波长的可调谐激光器。

公开(公告)号：US20130170785A1

公开(公告)日：2013-07-04

申请号：US13643079

申请日：2010-03-12

申请人： Peiliang Gao

发明人： Peiliang Gao

IPC分类号： G02F1/035

CPC分类号： G02F1/035 ,  G02B6/266 ,  G02B6/2766 ,  G02B6/2793 ,  G02B6/3552 ,  G02B6/3592 ,  G02F1/0136 ,  G02F1/0305 ,  G02F1/093 ,  G02F1/31 ,  G02F2203/48

摘要： A multifunctional integrated optical device includes an input collimator (101) with a pigtail, an input birefringent crystal wedge (110), a Faraday rotator (120), a Pockels cell (130), an output birefringent crystal wedge (140) and an output collimator (102) with a pigtail, arranged along an optical path in turn. The optical device also includes an electric driver (150) for a variable attenuator and an optical switch, and another electric driver (160) for a modulator. The device employs the Pockels cell for dynamically rotating the polarization state of incident light at nanosecond speed for attenuation and modulation. The device can be used as a polarization independent optical isolator, an optical switch, a variable attenuator and a modulator, without mechanical moving parts, for use in various laser systems and particularly in a fiber optic telecommunication system.

摘要翻译： 多功能集成光学装置包括具有尾纤的输入准直器（101），输入双折射晶体楔（110），法拉第旋转器（120），普克尔单元（130），输出双折射晶体楔（140）和输出 具有引线的准直器（102）依次沿光路布置。 光学装置还包括用于可变衰减器和光开关的电驱动器（150）和用于调制器的另一电驱动器（160）。 该器件采用Pockels单元，以纳秒速度动态地旋转入射光的偏振态，用于衰减和调制。 该器件可用作无偏振无关光隔离器，光开关，可变衰减器和调制器，无机械运动部件，用于各种激光系统，特别是在光纤通信系统中。