公开(公告)号：US07782532B2

公开(公告)日：2010-08-24

申请号：US12120002

申请日：2008-05-13

Applicant: Li Wu ,  Xianghua Shi ,  Zan Gong ,  Jiwu Ling ,  Zhaoyang Sun ,  Xiangtong Yang ,  Yunbin Xu ,  Lei Lin ,  Fuquan Huang

Inventor： Li Wu ,  Xianghua Shi ,  Zan Gong ,  Jiwu Ling ,  Zhaoyang Sun ,  Xiangtong Yang ,  Yunbin Xu ,  Lei Lin ,  Fuquan Huang

IPC: G02B5/30

CPC classification number: G02F1/093

Abstract: An optical isolator includes a birefringent material and a Faraday rotator. The birefringent material receives a forward light propagating in a forward direction and a backward light propagating opposite to the forward direction. The birefringent material has an optical axis, wherein the forward light has a first polarization aligned perpendicular to the optical axis and is configured to pass the first birefringent material substantially along the forward direction. At least a portion of the backward light has a second polarization not perpendicular to the optical axis. The first birefringent material can displace the backward light to form a first displaced backward light. A Faraday rotator can rotate the forward light, and the backward light or the first displaced backward light by a same predetermined angle along the rotation direction.

Abstract translation: 光隔离器包括双折射材料和法拉第旋转器。 双折射材料接收沿正向传播的正向光和向前方向相反传播的向后光。 所述双折射材料具有光轴，其中所述正向光具有垂直于所述光轴的第一偏振，并且被配置为基本上沿着所述向前方向通过所述第一双折射材料。 反射光的至少一部分具有不垂直于光轴的第二偏振光。 第一双折射材料可以将后向光移位以形成第一位移反向光。 法拉第旋转器可以沿着旋转方向旋转向前的光，向后的光或第一个向后的光反向旋转相同的预定角度。

公开(公告)号：US20080080571A1

公开(公告)日：2008-04-03

申请号：US11622387

申请日：2007-01-11

Applicant: Yingjun Ma ,  Jiwu Ling ,  Li Wu ,  Youyi Huang ,  Kangiun Wang

Inventor： Yingjun Ma ,  Jiwu Ling ,  Li Wu ,  Youyi Huang ,  Kangiun Wang

IPC: H01S3/10

CPC classification number: H01S3/109 ,  H01S3/0602 ,  H01S3/0627 ,  H01S3/08 ,  H01S3/08054 ,  H01S3/08072 ,  H01S3/09415 ,  H01S3/10061

Abstract: An intra-cavity frequency-doubling laser device includes a first mirror and a second mirror defining a resonance cavity therein, a gain media to produce a first lasing light in response to an excitation energy received from outside of the resonance cavity, a non-linear optical material to generate a second lasing light in response to the first lasing light. The second lasing light and the first lasing light have different frequencies. The first mirror is reflective to the first lasing light and the second lasing light. The second mirror is reflective to the first lasing light and at least partially transmissive to the second lasing light. A birefringent optical material in the resonance cavity can rotate the polarization direction of at least one of the first lasing light and the second lasing light. An optical axis of the birefringent optical material and an optical axis of the non-linear optical material have an angle between 30 and 60 degrees.

Abstract translation: 腔内倍频激光器件包括第一反射镜和在其中限定谐振腔的第二反射镜，响应于从谐振腔外部接收的激发能产生第一激光的增益介质，非线性 光学材料以响应于第一激光发光而产生第二激光。 第二激光和第一激光具有不同的频率。 第一个反射镜反射了第一个激光和第二个激光。 第二反射镜反射到第一激光，并且至少部分地透射到第二激光。 谐振腔中的双折射光学材料可旋转第一激光和第二激光的至少一个的偏振方向。 双折射光学材料的光轴和非线性光学材料的光轴具有30至60度的角度。

公开(公告)号：US20090046347A1

公开(公告)日：2009-02-19

申请号：US12120002

申请日：2008-05-13

Applicant: Li Wu ,  Xianghua Shi ,  Zan Gong ,  Jiwu Ling ,  Zhaoyang Sun ,  Xiangtong Yang ,  Yunbin Xu ,  Lei Lin ,  Fuquan Huang

Inventor： Li Wu ,  Xianghua Shi ,  Zan Gong ,  Jiwu Ling ,  Zhaoyang Sun ,  Xiangtong Yang ,  Yunbin Xu ,  Lei Lin ,  Fuquan Huang

IPC: G02F1/09

CPC classification number: G02F1/093

Abstract: An optical isolator includes a birefringent material and a Faraday rotator. The birefringent material receives a forward light propagating in a forward direction and a backward light propagating opposite to the forward direction. The birefringent material has an optical axis, wherein the forward light has a first polarization aligned perpendicular to the optical axis and is configured to pass the first birefringent material substantially along the forward direction. At least a portion of the backward light has a second polarization not perpendicular to the optical axis. The first birefringent material can displace the backward light to form a first displaced backward light. A Faraday rotator can rotate the forward light, and the backward light or the first displaced backward light by a same predetermined angle along the rotation direction.

Abstract translation: 光隔离器包括双折射材料和法拉第旋转器。 双折射材料接收沿正向传播的正向光和向前方向相反传播的向后光。 所述双折射材料具有光轴，其中所述正向光具有垂直于所述光轴的第一偏振，并且被配置为基本上沿着所述向前方向通过所述第一双折射材料。 反射光的至少一部分具有不垂直于光轴的第二偏振光。 第一双折射材料可以将后向光移位以形成第一位移反向光。 法拉第旋转器可以沿着旋转方向旋转向前的光，向后的光或第一个向后的光反向旋转相同的预定角度。

公开(公告)号：US06941072B2

公开(公告)日：2005-09-06

申请号：US09981048

申请日：2001-10-16

Applicant: Li Wu ,  Zhanhua Guo ,  Jiwu Ling ,  Heping Zeng ,  Zhizhan Ruan ,  Jiayong Ma

Inventor： Li Wu ,  Zhanhua Guo ,  Jiwu Ling ,  Heping Zeng ,  Zhizhan Ruan ,  Jiayong Ma

IPC: G02B6/34 ,  H04J14/02

CPC classification number: G02B6/29367 ,  G02B6/2938 ,  G02B6/29395 ,  H04J14/0206 ,  H04J14/0209 ,  H04J14/0213 ,  H04J14/0219

Abstract: The invention relates to wavelength division multiplexing (WDM) and demultiplexing of optical signals using optical filters in free space. To minimize dispersion, the present invention uses relatively small angles of incidence. To avoid the need for a large package, the present invention utilizes reflective prisms to steer the reflected beams to provide a lateral shift in the beam path that ensures that the necessary space is provided between the input/output ports. Devices including a single adjustable filter are disclosed, along with devices having a plurality of filters.

Abstract translation: 本发明涉及波分复用（WDM）和使用自由空间中的滤光器的光信号的解复用。 为了最小化分散，本发明使用相对小的入射角。 为了避免对大封装的需要，本发明利用反射棱镜来控制反射光束以提供光束路径中的横向偏移，从而确保在输入/输出端口之间提供必要的空间。 公开了包括单个可调节滤光器的装置以及具有多个滤光器的装置。

公开(公告)号：US06687055B2

公开(公告)日：2004-02-03

申请号：US10186377

申请日：2002-07-01

Applicant: Li Wu ,  Jiwu Ling ,  Feng Liang ,  Heping Zeing

Inventor： Li Wu ,  Jiwu Ling ,  Feng Liang ,  Heping Zeing

IPC: G02B2728

CPC classification number: G02B7/008 ,  G02B5/3083 ,  Y10S359/90

Abstract: The invention provides a simple temperature insensitive optical retarder (waveplate) having a first and a second wedge shaped birefringent crystals, and a crystal mount comprising a first material having a low thermal expansion coefficient and a second material having a high thermal expansion coefficient, wherein the first and the second wedge shaped birefringent crystals are attached onto the first and second materials, respectively, so that the total retardance by the first and second birefringent crystals at a first temperature is substantially the same as that at a second different temperature at a given wavelength. Advantageously, the temperature insensitive optical retarder is simple, easy to construct, can be used for any birefringent crystal and does not require the use of different birefringent crystals.

Abstract translation: 本发明提供一种具有第一和第二楔形双折射晶体的简单的温度不敏感光学延迟器（波片），以及包括具有低热膨胀系数的第一材料和具有高热膨胀系数的第二材料的晶体安装座，其中， 第一和第二楔形双折射晶体分别附着到第一和第二材料上，使得第一和第二双折射晶体在第一温度下的总延迟与在给定波长处的第二不同温度下的总延迟基本相同 。 有利的是，温度不敏感的光学延迟器简单，易于构造，可用于任何双折射晶体，不需要使用不同的双折射晶体。

公开(公告)号：US06785000B2

公开(公告)日：2004-08-31

申请号：US10177668

申请日：2002-06-24

Applicant: Feng Liang ,  Heping Zheng ,  Li Wu ,  Jiwu Ling

Inventor： Feng Liang ,  Heping Zheng ,  Li Wu ,  Jiwu Ling

IPC: G01B702

CPC classification number: G02B6/29347

Abstract: The present invention relates to an optical interferometer based on a Mach-Zehnder interferometer that can be used as an optical channel interleaver in wavelength division multiplexed (WDM) and dense wavelength division multiplexed (DWDM) optical networks. Optical channel interleavers/de-interleavers combine sets of WDM and DWDM channels for transmission over a network and/or separate WDM and DWDM signals into sets of channels with more convenient channel spacing for further de-multiplexing. The interferometer according to the present invention utilizes a ring resonator in each arm thereof as a phase shifter to provide a flat-top wavelength response with wide pass-bands and stop-bands.

Abstract translation: 本发明涉及一种基于Mach-Zehnder干涉仪的光干涉仪，该干涉仪可用作波分复用（WDM）和密集波分复用（DWDM）光网络中的光通道交织器。 光通道交织器/去交织器组合WDM和DWDM信道集合，用于通过网络传输和/或将单独的WDM和DWDM信号转换成具有更方便的信道间隔的信道组，用于进一步解复用。 根据本发明的干涉仪将其每个臂中的环形谐振器用作移相器，以提供具有宽通带和阻带的平顶波长响应。

公开(公告)号：US06684014B2

公开(公告)日：2004-01-27

申请号：US09967483

申请日：2001-09-28

Applicant: Li Wu ,  Jiwu Ling ,  Weimin Chen ,  Chenggang Xin ,  Zhen Miao ,  Cuilian Zhan

Inventor： Li Wu ,  Jiwu Ling ,  Weimin Chen ,  Chenggang Xin ,  Zhen Miao ,  Cuilian Zhan

IPC: G02B626

CPC classification number: G02B6/2937 ,  G02B6/32

Abstract: The invention relates to a micro-optic adhesive assembly and a method for making a micro-optic assembly. The method of joining optical assemblies in accordance with the present invention improves the strength and shock resistance of adhesive joints in micro-optic devices without affecting the optical path. The adhesive assembly of the present invention has sufficiently flexibility to be able to conform to different alignment geometries without introducing significant bulk or thermal expansion incompatibility. Further the improved method is compatible with the device manufacturing techniques and does not add significant manufacturing complexity. An optical device in accordance with the invention comprises: a first optical element having an optical path therethrough and having a coupling end face; a second optical element having an optical path therethrough and having a coupling end face optically coupled to the coupling end face of the first optical element such that light propagating on the optical path of the first element couples to the optical path of the second element; an adhesive joint between the coupling end face of the first element and the coupling end face of the second element, such that adhesive is not in the optical paths therethrough; and a plurality of flexible crossties each secured to an exterior surface of the first element and to an exterior surface of the second element to reinforce the adhesive joint.

Abstract translation: 本发明涉及微光学胶粘剂组件和用于制造微光学组件的方法。 根据本发明的连接光学组件的方法提高了微光学器件中的粘合剂接合部的强度和抗冲击性，而不影响光路。 本发明的粘合剂组件具有足够的柔性以能够符合不同的对准几何形状而不引入显着的体积或热膨胀不相容性。 此外，改进的方法与设备制造技术兼容，并且不会增加显着的制造复杂性。 根据本发明的光学装置包括：具有穿过其中的光路并具有耦合端面的第一光学元件; 第二光学元件具有穿过其中的光路，并且具有光耦合到第一光学元件的耦合端面的耦合端面，使得在第一元件的光路上传播的光耦合到第二元件的光路; 在第一元件的耦合端面和第二元件的耦合端面之间的粘合剂接合部，使得粘合剂不在其中的光路中; 以及多个柔性搭扣，每个固定到第一元件的外表面和第二元件的外表面以加强粘合剂接合部。

公开(公告)号：US06438278B1

公开(公告)日：2002-08-20

申请号：US09239203

申请日：1999-01-28

Applicant: Zhimin Liu ,  Jiwu Ling

Inventor： Zhimin Liu ,  Jiwu Ling

IPC: G02B600

CPC classification number: G02B6/2746 ,  G02B27/283

Abstract: A fiber optical circulator in which is a light beam is fed from a fiber of a first port in a dual core glass capillary, then collimated before being passed to a birefringent crystal wherein the light beam is divided into two orthogonal components o and e with a displacement. The State of Polarization (SOP) of components then are changed into the same, perpendicular to the incident plane of the birefringent crystal prism by the group of Faraday Rotator and two Half-Wave Plates (HWP) that have different optical axis orientation and cover o and e components respectively. Then the light components with the same SOP pass into a birefringent prism where they receive angle correction to meet receiving requirement in incident angle for the fiber of port 2 without displacement due to their SOP. This is followed by a second group of HWP and Faraday Rotator that changes the SOP of two components back to orthogonal. The light beam of components then pass into the second birefringent crystal which combines the o and e components together and pass through collimator lens, and are received by optical fiber of the second port. The optical path from the second port to the third port is similar to that described above. However, due to the non-reciprocal property of the Faraday Rotator, the SOP of the two light components from the second port will be in the incident plane of the crystal prism, therefore receive a displacement after the birefringent crystal prism. This displacement combined with angle correction allows the light from the second port is fed into the fiber of the third port. An alternative design uses a pair of glass prism and a plane crystal to replace the function of crystal prism in the preferred embodiment.

Abstract translation: 其中是光束的光纤循环器从双芯玻璃毛细管中的第一端口的光纤馈送，然后在被传送到双折射晶体之前被准直，其中光束被分成两个正交分量o和e，其中a 移位。 通过法拉第旋转器组和两个具有不同光轴取向的半波片（HWP）垂直于双折射晶体棱镜的入射平面，组件的极化状态（SOP）变为相同，覆盖o 和e组件。 然后具有相同SOP的光分量进入双折射棱镜，在那里它们接收角度校正，以满足端口2的光纤的入射角的接收要求，由于它们的SOP而没有位移。 之后是第二组HWP和法拉第旋转器，将两个组件的SOP改为正交。 分量光束然后进入第二双折射晶体，其将o和e分量结合在一起并通过准直透镜，并由第二端口的光纤接收。 从第二端口到第三端口的光路与上述类似。 然而，由于法拉第旋转器的不可逆性，来自第二端口的两个光分量的SOP将在晶体棱镜的入射平面中，因此在双折射晶体棱镜之后接收位移。 该位移与角度校正相结合允许来自第二端口的光被馈送到第三端口的光纤中。 在优选实施例中，替代设计使用一对玻璃棱镜和平面晶体来代替晶体棱镜的功能。