公开(公告)号：US06657785B2

公开(公告)日：2003-12-02

申请号：US09933165

申请日：2001-08-21

申请人： Thomas Ducellier ,  Kuochou Tai ,  Kok-Wai Chang ,  Jyehong Chen ,  Yihao Cheng

发明人： Thomas Ducellier ,  Kuochou Tai ,  Kok-Wai Chang ,  Jyehong Chen ,  Yihao Cheng

IPC分类号： G02B530

CPC分类号： G02F1/093 ,  G02F2203/05

摘要： The present invention relates to bi-directional circulators based on interleaver technology, e.g. birefringent crystal interleaver technology, that enables signals containing even number ITU channels to travel in one direction through the device, while signals containing odd number ITU channels travel in the opposite direction. Open and closed three and four port devices are disclosed, as well as several useful implementations of the three port device in combination with other optical components, which result in hybrid uni-directional and bi-directional devices.

公开(公告)号：US06587266B2

公开(公告)日：2003-07-01

申请号：US09930266

申请日：2001-08-16

申请人： Kuochou Tai ,  Kok-Wai Chang ,  Jyehong Chen ,  Thomas Ducellier ,  Yihao Cheng

发明人： Kuochou Tai ,  Kok-Wai Chang ,  Jyehong Chen ,  Thomas Ducellier ,  Yihao Cheng

IPC分类号： G02B530

CPC分类号： H01S3/06754 ,  G02B6/2746 ,  G02F1/093 ,  G02F2201/17 ,  H01S3/10023 ,  H01S2301/04 ,  Y10S372/703

摘要： Bi-directional wavelength interleaving optical isolators provide the ability to pass a first set of optical signals (e.g., ITU even channels) from a first port to a second port, while preventing a second set of optical signals from passing thereto. The bi-directional wavelength interleaving optical isolators also pass the second set of optical signals (e.g., ITU odd channels) from the second port to the first port, while preventing the first set of optical signals from passing thereto. Thus, the bi-directional wavelength interleaving optical isolator can provide bi-directional communications by passing a first set of signals in a first direction and a second set of signals in a second direction.

摘要翻译： 双向波长交织光隔离器提供将第一组光信号（例如，ITU甚至信道）从第一端口传递到第二端口的能力，同时防止第二组光信号通过。 双向波长交织光隔离器还将第二组光信号（例如，ITU奇信道）从第二端口传递到第一端口，同时防止第一组光信号通过。 因此，双向波长交织光隔离器可以通过在第一方向上传递第一组信号和在第二方向上传递第二组信号来提供双向通信。

公开(公告)号：US06540411B1

公开(公告)日：2003-04-01

申请号：US09638888

申请日：2000-08-16

申请人： Yihao Cheng

发明人： Yihao Cheng

IPC分类号： G02B636

CPC分类号： G02B6/2937 ,  G02B6/262 ,  G02B6/266 ,  G02B6/2746 ,  G02B6/29389 ,  G02B6/29395 ,  G02B6/32 ,  G02B6/327

摘要： The present invention relates to an optical coupling between an end of an optical fibre and an end of a lens, which provides a reliable joint with a determined spacing and angular orientation. The optical coupling permits movement of the end of the optical fibre relative to the lens in at least two alignment directions. Advantageously, the present invention permits movement of the end of the optical fibre relative to the end of the lens in a direction perpendicular to the optical axis of the lens, before the optical coupling is secured. The optical fibre within an optical fibre tube/ferrule and the lens are secured within separate sleeves and the sleeves bonded together. The end of the optical fibre and the end of the lens are optically aligned before being secured in place relative to each other. Alternatively, the invention provides similar advantages in coupling two lenses to one another via separate sleeves they are contained within.

摘要翻译： 本发明涉及光纤的端部和透镜的端部之间的光耦合，其提供具有确定的间隔和角度取向的可靠接头。 光耦合允许在至少两个对准方向上相对于透镜移动光纤的端部。 有利地，本发明允许在光耦合被固定之前光纤的端部相对于透镜的端部在垂直于透镜的光轴的方向上移动。 光纤管/套管内的光纤和透镜被固定在分开的套筒内，并且套筒结合在一起。 在相对于彼此固定就位之前，光纤的端部和透镜的端部被光学对准。 或者，本发明提供了通过它们被包含在其中的分离的套管将两个透镜彼此联接的类似的优点。

公开(公告)号：US6091866A

公开(公告)日：2000-07-18

申请号：US144447

申请日：1998-09-01

申请人： Yihao Cheng

发明人： Yihao Cheng

IPC分类号： G02B5/30 ,  G02B6/26 ,  G02B6/00

CPC分类号： G02B6/2746 ,  G02B5/3083

摘要： A multi-stage optical isolating device having at least three stages includes birefringent crystals for separating shifting and combining an incoming beam of light into orthogonal polarized beams. The multi-stage device also includes at least three Faraday rotators that rotate incoming light propagating through the device in a same direction. The inclusion of a reciprocal rotator in the form of a half-wave plate advantageously obviates orienting the Faraday rotators differently.

摘要翻译： 具有至少三级的多级光隔离装置包括用于分离移动并将入射光束组合成正交偏振光束的双折射晶体。 多级装置还包括至少三个法拉第旋转器，其以相同的方向旋转通过装置传播的入射光。 包含半波形形式的往复旋转器有利地避免了对法拉第旋转器的定向不同。

公开(公告)号：US6059462A

公开(公告)日：2000-05-09

申请号：US28880

申请日：1998-02-24

申请人： Jozef Finak ,  Neil Teitelbaum ,  Yihao Cheng

发明人： Jozef Finak ,  Neil Teitelbaum ,  Yihao Cheng

IPC分类号： G02B6/26 ,  G02B6/32 ,  G02B6/34 ,  G02B6/38

CPC分类号： G02B6/2937 ,  G02B6/32

摘要： The present invention relates to a coupling element for coupling between optical elements, for instance a ferrule encased fiber end and a lens, two lenses, or filter and lens assemblies, which provides a reliable joint with a determined spacing and angular orientation between them if needed. Advantageously, the coupling in accordance with the present invention does not obscure optical transmission through the coupling with an epoxy layer. A stand off element is provided which has opposite reference surfaces for joining the end faces of the optical elements and a central aperture, slot or equivalent open area for light transmission. In use the open area is aligned, for example with the fiber end and the desired port in the lens. Adhesive connection can be provided between the opposite surfaces of the stand off element and the coupling end faces of the optical elements. No epoxy is applied over the open area. Other securing methods such as external securing elements can be used. Alignment is established by the planar surfaces of the stand off element. The separation between elements can be accurately established by selecting the desired thickness between faces of the stand off element. Alternatively, the surfaces of the stand off element may be angled to compliment the surfaces of the elements, or to provide an accurate angled coupling. Loss is reduced by not transmitting light through an epoxy layer.

摘要翻译： 本发明涉及用于在光学元件之间耦合的耦合元件，例如套圈封装的光纤端和透镜，两个透镜或滤光器和透镜组件，其在需要时提供具有确定的间距和角度定向的可靠接头 。 有利地，根据本发明的联接器不会通过与环氧树脂层的联接来遮蔽光学传输。 提供了一个支架元件，其具有用于连接光学元件的端面的相对的参考表面和用于光透射的中心孔，槽或等效的开口区域。 在使用中，开口区域对齐，例如与光纤端部和镜头中的所需端口对齐。 可以在支架元件的相对表面和光学元件的联接端面之间提供粘合剂连接。 在开放区域没有施加环氧树脂。 可以使用诸如外部固定元件的其它固定方法。 对准由支架元件的平面形成。 可以通过在支架元件的表面之间选择期望的厚度来精确地建立元件之间的间隔。 或者，支架元件的表面可以成角度以补偿元件的表面，或者提供精确的成角度的联接。 通过不透过环氧树脂层的光来减少损失。

公开(公告)号：US6055104A

公开(公告)日：2000-04-25

申请号：US82517

申请日：1998-05-21

申请人： Yihao Cheng

发明人： Yihao Cheng

IPC分类号： G02B27/28 ,  G02B6/26 ,  G02B6/28 ,  G02B6/32 ,  G02B6/34 ,  G02B5/30 ,  G02B6/00

CPC分类号： G02B6/2848 ,  G02B27/283 ,  G02B6/266 ,  G02B6/272 ,  G02B6/2746 ,  G02B6/2773 ,  G02B6/2937 ,  G02B6/29394 ,  G02B6/32

摘要： A polarization beam splitter combiner uses a birefringent crystal that is a fraction of the size of conventional crystals used in similar devices. Since the crystal is considerably shorter in length, the beam passing through the crystal can be uncollimated, spreading very little from one end to the other. Launching uncollimated beams through a short small crystal obviates the requirement for lenses at the end face of the crystal having two waveguides coupled thereto. Since lenses are not required the waveguides at the input/output end face can be very closely spaced apart. Conventional lensed devices utilizing a pair of lenses at an input/output end face must be considerably larger in order to accommodate the lenses and resulting collimated beams.

摘要翻译： 偏振分束器组合器使用双折射晶体，其是类似器件中使用的常规晶体尺寸的一部分。 由于晶体的长度要短得多，所以通过晶体的光束可以被无约束，从一端扩展到另一端。 通过短的小晶体发射未经准备的光束，避免了在具有耦合到其上的两个波导的晶体的端面处的透镜的需求。 由于不需要透镜，输入/输出端面处的波导可以非常紧密地间隔开。 在输入/输出端面处使用一对透镜的传统透镜装置必须相当大以容纳透镜和所得到的准直光束。

公开(公告)号：US5991076A

公开(公告)日：1999-11-23

申请号：US942496

申请日：1997-10-02

申请人： Yihao Cheng

发明人： Yihao Cheng

IPC分类号： G02B27/28 ,  G02B6/26 ,  G02B6/28 ,  G02B6/32 ,  G02B6/34 ,  G02B5/30

CPC分类号： G02B6/2746 ,  G02B6/2848 ,  G02B6/32 ,  G02B6/272 ,  G02B6/2937

摘要： An at least 3-port optical circulator has first group of optical components, and a second group of optical components, the first group being separated from the second group by an optical distance "1". Each group of optical components has a divider and combiner for dividing an input beam into two beams having orthogonal polarizations and for combining two beams having orthogonal polarizations into a single beam. Furthermore, each group has a GRIN lens for at least substantially collimating or focussing input light, and a polarization rotator between the first divider and combiner and the GRIN lens for making two orthogonal polarization vectors parallel or the two parallel polarization vectors orthogonal to one of or both of the first and second group of optical elements having beam shifting means disposed to shift two beams having a predetermined same polarization. The beam shifting means are of a thickness and orientation so that a beam of light that propagates from a first port sequentially to a second port and from the second port sequentially to a third port are shifted a distance equal to the distance between the optical axes of the first and the third ports.

摘要翻译： 至少3端口光循环器具有第一组光学部件和第二组光学部件，第一组通过光学距离“1”与第二组分离。 每组光学部件具有用于将输入光束分成具有正交偏振的两个光束并用于将具有正交偏振的两个光束组合成单个光束的分割器和组合器。 此外，每个组具有用于至少基本上准直或聚焦输入光的GRIN透镜，以及在第一分割器和组合器与GRIN透镜之间的偏振旋转器，用于使两个正交偏振矢量平行或两个平行偏振矢量正交于 具有光束移动装置的第一组光学元件和第二组光学元件都设置成移动具有预定相同极化的两束光束。 光束移动装置具有厚度和取向，使得从第一端口顺序地传播到第二端口并且从第二端口顺序地传播到第三端口的光束被移动距离等于光轴的光轴之间的距离 第一和第三个港口。

公开(公告)号：US5768005A

公开(公告)日：1998-06-16

申请号：US533837

申请日：1995-09-28

申请人： Yihao Cheng ,  Gary S. Duck

发明人： Yihao Cheng ,  Gary S. Duck

IPC分类号： G02B27/28 ,  G02F1/09 ,  G02B5/30 ,  G02F1/095

CPC分类号： G02B27/283 ,  G02F1/093

摘要： This invention relates to a reflective optical isolating device having at least two stages. In one embodiment a polarization independent optical isolating device has an input/output end and a reflector at another end. An isolator is disposed between the reflector and the input/output end. The isolator includes a non-reciprocal rotator in the form of a Faraday rotator, and in one embodiment the isolator also includes two reciprocal rotators. A first end of the isolator includes a birefringent crystal for separating an input beam of light in an input direction and for combing two beams of light in an output direction. The isolator also includes a second birefringent crystal at the other end for combining a separated beam of light on route to the reflector and for separating a combined beam of light in the output direction. In one embodiment two separate single isolation stages are provided, and in another embodiment two stage isolation is provided without providing two single stages of isolation.

摘要翻译： 本发明涉及具有至少两个阶段的反射光学隔离装置。 在一个实施例中，偏振无关的光隔离装置在另一端具有输入/输出端和反射器。 隔离器设置在反射器和输入/输出端之间。 隔离器包括法拉第旋转器形式的不可逆旋转器，并且在一个实施例中，隔离器还包括两个往复旋转器。 隔离器的第一端包括用于在输入方向上分离输入光束并用于在输出方向上梳理两束光的双折射晶体。 隔离器还包括在另一端的第二双折射晶体，用于将分离的光束组合到反射器的路线上，并用于在输出方向上分离组合的光束。 在一个实施例中，提供了两个单独的隔离级，并且在另一实施例中，提供两级隔离，而不提供两个单级隔离。

公开(公告)号：US20140313708A1

公开(公告)日：2014-10-23

申请号：US14259140

申请日：2014-04-22

申请人： Yihao Cheng

发明人： Yihao Cheng

IPC分类号： F21V21/30 ,  F21V21/096 ,  F21V21/088 ,  F21K99/00

CPC分类号： F21V21/30 ,  F21K9/20 ,  F21V21/088 ,  F21V21/096

摘要： A lighting apparatus and method is disclosed for illuminating a surface using solid-state light emitting diodes (LEDs). The lighting apparatus consists of a plurality of LEDs arranged in an array form, a base for mounting the LEDs, an electrical power supply, and a fixing means for attaching said lighting apparatus to a surface to provide an upward lighting. In some embodiments disclosed in the invention, the base has a shaped surface. In other embodiments, a lensing means is provided. In some embodiments, the LEDs are mounted at an angle. According to the present invention, a method for providing an upward lighting to a surface using LEDs is provided, wherein the lighting apparatus is attached near the bottom of the surface to be illuminated and the angle between the plane of said surface and the center of the light beam from the LEDs is less than 45 degrees.

摘要翻译： 公开了一种使用固态发光二极管（LED）照射表面的照明装置和方法。 照明装置由排列成阵列形式的多个LED组成，用于安装LED的基座，电源和用于将所述照明装置附接到表面以提供向上照明的固定装置。 在本发明公开的一些实施例中，底座具有成形表面。 在其它实施例中，提供透镜装置。 在一些实施例中，LED以一定角度安装。 根据本发明，提供了一种使用LED向表面提供向上照明的方法，其中照明装置安装在被照射表面的底部附近，并且所述表面的平面与所述表面的中心之间的角度 来自LED的光束小于45度。

公开(公告)号：US06292604B1

公开(公告)日：2001-09-18

申请号：US09357123

申请日：1999-07-16

申请人： Yihao Cheng

发明人： Yihao Cheng

IPC分类号： G02B628

CPC分类号： G02B6/2937 ,  G02B6/327

摘要： An optical coupling arrangement for use in an optical filter is disclosed wherein optical fibre are disposed only along one line in one orientation across an end face of an optical fibre tube having a slanted end face. By disposing slanted/polished optical fibre end faces along a line that is orthogonal to a longitudinal axis of the optical fibre tube, optimum coupling of light is achieved.

摘要翻译： 公开了一种用于滤光器的光耦合装置，其中光纤仅沿着具有倾斜端面的光纤管的端面沿着一个方向沿着一条线布置。 通过沿着与光纤管的纵向轴线正交的线设置倾斜/抛光的光纤端面，实现光的最佳耦合。