公开(公告)号：US20010026668A1

公开(公告)日：2001-10-04

申请号：US09819797

申请日：2001-03-29

Applicant: NEC Corporation

Inventor： Hirohito Yamada

IPC: G02B006/20 ,  G02B006/16 ,  G02B006/10

CPC classification number: G02B6/1225 ,  B82Y20/00

Abstract: The present invention provides a photonic crystal waveguide comprising: a substrate; a bottom cladding layer over the substrate; and a core layer over the bottom cladding layer, the core layer having a uniform distribution of holes, wherein the core layer has at least a waveguide region which is thicker than a remaining region of the core layer to cause a refractive index guide effect, or wherein the core layer has at least a waveguide region, on which a dielectric pattern is provided which has a refractive index higher than a substance in contact with a top surface of the core layer, or wherein the core layer has at least a waveguide region, and the holes except on the waveguide region are filled with an air, whilst the holes on the waveguide regions are filled with a filler material having a refractive index higher than 1.

Abstract translation: 本发明提供一种光子晶体波导，包括：基板; 衬底上的底部包层; 以及在所述下包层上方的芯层，所述芯层具有均匀的孔分布，其中所述芯层至少具有比所述芯层的剩余区域更厚的波导区域以引起折射率引导效应，或 所述芯层至少具有波导区域，在所述波导区域上设置有比与所述芯层的上表面接触的物质高的折射率的电介质图案，或者所述芯层至少具有波导区域， 并且除了波导区域之外的孔填充有空气，而波导区域上的孔填充有折射率高于1的填充材料。

公开(公告)号：US20010002944A1

公开(公告)日：2001-06-07

申请号：US09725800

申请日：2000-11-30

Inventor： Klaus Bohnert ,  Hubert Brandle ,  Philippe Gabus

IPC: G02B006/16 ,  C03B037/15

CPC classification number: G02B6/2551 ,  C03B37/15 ,  C03B2203/18 ,  C03B2203/20 ,  C03B2203/36 ,  G02B6/105 ,  G02B6/34

Abstract: A method is described for producing a fiberoptic waveguide with a basic segment (11) and a phase shift segment (12), the basic segment (11) and phase shift segment (12) having fiber cores (K) of the same form and the fiber cores being aligned at a defined angle (null) to one another. In the method, use is made of an optical fiber (1) having a fiber core (K) of the abovenamed form, which fiber is twisted at least approximately by the abovenamed defined angle (null) and held fixed in this torsional position. Subsequently, a stress-relief zone (13) is heated inside the twisted fiber (1) until the torsion is released inside the stress-relief zone (13) and the basic segment (11) is produced on one side of the stress-relief zone (13) and the phase shift segment (12) is produced on the other side. In this case, the fixing of the torsional position is maintained until after solidification of the stress-relief zone (13).

Abstract translation: 描述了一种用于制造具有基本段（11）和相移段（12）的纤维光波导的方法，具有相同形式的光纤芯（K）的基本段（11）和相移段（12）以及 纤维芯以相互限定的角度（α）对准。 在该方法中，使用具有上述形式的纤维芯（K）的光纤（1），该纤维至少大约被上述限定角度（α）扭转并保持固定在该扭转位置。 随后，在扭转的纤维（1）内加热应力消除区（13），直到在应力释放区（13）内释放扭转，并且在应力释放的一侧产生基部段（11） 在另一侧产生区域（13）和相移段（12）。 在这种情况下，维持扭转位置的固定直到应力消除区（13）凝固。

公开(公告)号：US20040240077A1

公开(公告)日：2004-12-02

申请号：US10879276

申请日：2004-06-30

Inventor： Hanoch Kislev ,  Arkady Glukhovsky ,  Gavriel Meron ,  Gavriel J. Iddan

IPC: G02B006/02 ,  G02B006/16 ,  G02B003/02 ,  G02B013/18

CPC classification number: A61B1/041 ,  A61B1/00096 ,  A61B1/051 ,  A61B1/0661 ,  A61B1/31 ,  G02B17/00 ,  G02B23/2407 ,  G02B27/0018 ,  H04N7/18

Abstract: The present invention provides an optical system for illuminating and viewing a target in which an illumination element and a receiving means are disposed behind a single optical window, and which obtains data essentially free of backscatter and stray light. The optical window of the optical system is configured such that it defines a shape having at least one focal curve, i.e., an ellipsoid shaped dome. The illumination element and the receiving means are geometrically positioned on the focal curve plane or in proximity of the focal curve plane, such that, when illuminating, rays from the illumination elements, that are internally reflected from the optical window, will not be incident on the receiving means.

Abstract translation: 本发明提供了一种用于照明和观看目标的光学系统，其中照明元件和接收装置设置在单个光学窗口后面，并且获得基本上没有反向散射和杂散光的数据。 光学系统的光学窗口被配置为使得其限定具有至少一个焦点曲线的形状，即椭圆形的圆顶。 照明元件和接收装置几何地位于焦平面或焦平面附近，使得当照明时，来自光学窗口内部反射的来自照明元件的光线将不会入射到 接收装置。

公开(公告)号：US20040223712A1

公开(公告)日：2004-11-11

申请号：US10425279

申请日：2003-04-28

Inventor： Ruolin Li

IPC: G02B006/02 ,  G02B006/16

CPC classification number: G02B6/42 ,  G02B6/4202 ,  H01S5/02248 ,  H01S5/1039 ,  H01S5/141

Abstract: A technique to stabilize the effective refraction index of a laser generating system's wave guide, as well as a technique to stabilize the phase of the wave guide. In at least one embodiment of the invention, a polymer is used within the wave guide to counteract the effects of temperature on the clad material of the wave guide in order to create an overall effective refraction index that is substantially independent of temperature variations. Furthermore, in at least one embodiment of the invention relative segment lengths of the wave guide are chosen to stabilize the phase of the wave guide.

Abstract translation: 一种稳定激光发生系统波导的有效折射率的技术，以及稳定波导相位的技术。 在本发明的至少一个实施例中，在波导内使用聚合物来抵消温度对波导包层材料的影响，以便产生基本上与温度变化无关的总有效折射率。 此外，在本发明的至少一个实施例中，选择波导的相对段长度以稳定波导的相位。

公开(公告)号：US20040141704A1

公开(公告)日：2004-07-22

申请号：US10755384

申请日：2004-01-13

Applicant: Fujitsu Limited

Inventor： Takafumi Terahara ,  Rainer Hainberger ,  Takeshi Hoshida

IPC: G02B006/16

CPC classification number: H04B10/2916 ,  G02B6/02252 ,  G02B6/02266 ,  G02B6/262 ,  G02B6/29377 ,  H01S3/302 ,  H04B10/25253 ,  H04B2210/003

Abstract: An optical fiber transmission line including first, second and third optical fibers connected together so that light travels through the transmission line from the first optical fiber, then through the second optical fiber and then through the third optical fiber. The first, second and third optical fibers have first, second and third characteristic values, respectively. The second characteristic value is larger than the first characteristic value and the third characteristic value. The characteristic value of a respective optical fiber being a nonlinear refractive index of the optical fiber divided by an effective cross section of the optical fiber. Pump light is supplied to the transmission line so that Raman amplification occurs in the transmission line as an optical signal travels through the transmission line.

Abstract translation: 一种光纤传输线，包括连接在一起的第一，第二和第三光纤，使得光从第一光纤传播通过传输线，然后穿过第二光纤，然后通过第三光纤。 第一，第二和第三光纤分别具有第一，第二和第三特性值。 第二特征值大于第一特征值和第三特征值。 作为光纤的非线性折射率的各光纤的特征值除以光纤的有效截面。 泵浦光被提供给传输线，使得当光信号通过传输线路时，在传输线路中发生拉曼放大。

公开(公告)号：US20040114896A1

公开(公告)日：2004-06-17

申请号：US10674343

申请日：2003-10-01

Applicant: The Furukawa Electric Co., Ltd.

Inventor： Ryuichi Sugizaki ,  Takeshi Yagi

IPC: G02B006/16

CPC classification number: G02B6/02271 ,  G02B6/02004 ,  G02B6/03644 ,  H01S3/302

Abstract: An optical fiber, which is employed as a transmission line of an optical communication system, has a cable-cutoff wavelength of not longer than 1430 nanometers at the wavelength of 1450 nanometers, a mode-field diameter of not less than 7 micrometers and not more than 9 micrometers, a transmission loss of not more than 0.285 dB/km, and a dispersion of 0.1 to 4 ps/nm/km.

Abstract translation: 用作光通信系统的传输线的光纤在1450纳米的波长处具有不长于1430纳米的电缆截止波长，模场直径不小于7微米，而不是更多 传输损耗不大于0.285dB / km，色散为0.1〜4ps / nm / km。

公开(公告)号：US20040114893A1

公开(公告)日：2004-06-17

申请号：US10317380

申请日：2002-12-11

Inventor： Duck Young Kim ,  Yong Woo Park ,  Nak Hyun Sung ,  Young Choon Yook

IPC: G02B006/16

CPC classification number: G02B6/02009 ,  G02B6/023 ,  G02B6/02347 ,  G02B6/03688 ,  G02B6/14

Abstract: Disclosed is a mode-filtering and mode-selecting method in a multi-mode waveguide, and a waveguide amplifier, a semiconductor laser, and a VCSEL using the method. These optical elements include a cladding region that has a periodically changed refractive-index structure, thereby obtaining a mode-filtering or mode-selecting function, which in turn allows only a single mode in the transverse direction to propagate along the waveguide. By forming the periodic index-variation structure, the EDF, the semiconductor laser, and the VCSEL achieve a single mode operation although the cross-sectional area is much larger than that of the prior art, consequently realizing a high-performance or high-power single-mode amplifier and laser.

Abstract translation: 公开了多模波导中的模式滤波和模式选择方法，以及使用该方法的波导放大器，半导体激光器和VCSEL。 这些光学元件包括具有周期性变化的折射率结构的包层区域，从而获得模式滤波或模式选择功能，其又允许横向方向上的单个模式沿着波导传播。 通过形成周期性折射率变化结构，尽管横截面积远大于现有技术，但是EDF，半导体激光器和VCSEL实现单模操作，从而实现高性能或高功率 单模放大器和激光器。

公开(公告)号：US20040114892A1

公开(公告)日：2004-06-17

申请号：US10316972

申请日：2002-12-11

Inventor： Kin Seng Chiang ,  Vipul Rastogi

IPC: G02B006/16 ,  G02B006/18

CPC classification number: G02B6/03605 ,  G02B6/0283 ,  G02B6/03627 ,  G02B6/03688

Abstract: An optical fiber is described in which the cladding is provided with a refractive index that increases in a radially outward direction. In particular embodiments the refractive index of the cladding increases monotonically from a low value to a value close to or higher Than the refractive index of the core. Such a fiber can be formed that can be operated in an effective single mode manner or in multimode operation and which is very suitable for use in high-bit-rate communication systems

Abstract translation: 描述了一种光纤，其中包层具有在径向向外的方向上增加的折射率。 在特定实施例中，包层的折射率从低值单调增加到接近于或超过芯的折射率的值。 可以形成这样的光纤，其可以以有效的单模式或多模式操作操作，并且非常适合用于高比特率通信系统

公开(公告)号：US20040109654A1

公开(公告)日：2004-06-10

申请号：US10315766

申请日：2002-12-10

Inventor： Claudius Feger ,  Philip O. D. Hobbs ,  Maurice McGlashan-Powell

IPC: G02B006/16

CPC classification number: G02B6/2821 ,  G02B6/02 ,  G02B6/02033 ,  G02B6/03622 ,  G02B6/283 ,  G02B6/29316 ,  G02B6/421 ,  G02B6/4249

Abstract: A single-mode optical waveguide with a core, surrounded by a cladding consisting of an inner soft layer and an outer harder layer is described. The outer layer has a grating structure on its inner surface, whose spatial frequency is the same as that of the guided mode. The thickness of the inner cladding is sufficient to keep the grating outside the mode field in undeformed regions of the waveguide, so that normally no out-coupling of the light results. Connections are made by crossing two such waveguides at an angle and pressing them together. This results in deformation of the two waveguides such that the gratings are brought into proximity with the cores. Light is coupled out of one waveguide and into the other in the deformed region, resulting in a self-aligning optical connection. The out-coupled light propagates normal to the waveguide axis, so errors in the crossing angle cause little change in efficiency. Because the cladding system is sufficiently resilient to recover after deformation, the connection is remakeable.

Abstract translation: 描述了具有由包含内软层和外硬层的覆层围绕的芯的单模光波导。 外层在其内表面具有光栅结构，其空间频率与导向模式相同。 内包层的厚度足以将光栅保持在波导的未变形区域中的模场外，使得通常不会导致光的外耦合。 通过将两个这样的波导以一定角度交叉并将它们压在一起而形成连接。 这导致两个波导的变形，使得光栅与芯接近。 光从一个波导耦合到变形区域中的另一个，导致自对准光学连接。 输出耦合光垂直于波导轴传播，因此交叉角的误差几乎不会导致效率的变化。 因为包层系统具有足够的弹性以在变形后恢复，所以连接是可重新制造的。

公开(公告)号：US20040096170A1

公开(公告)日：2004-05-20

申请号：US10463862

申请日：2003-06-16

Applicant: The Board of Trustees of the University of Illinois

Inventor： George Papen ,  Peter Dragic

IPC: H01S003/13 ,  G02B006/02 ,  G02B006/16

CPC classification number: G02B6/03694 ,  G02B6/02042 ,  H04B10/2537

Abstract: A waveguide configuration including a core having an index of refraction and a shear velocity, a first cladding extending about the core having a shear velocity which is less than that of the core and an index of refraction which is less than the core, a second cladding extending about the first cladding, the second cladding having a shear velocity which is greater than that of the first cladding, wherein an optical mode has an index of refraction greater than that of the second cladding, and a buffer extending about the second cladding.

Abstract translation: 一种波导配置，其包括具有折射率和剪切速度的芯，围绕所述芯延伸的第一包层具有小于芯的剪切速度和小于芯的折射率的第二包层 围绕第一包层延伸，第二包层具有大于第一包层的剪切速度的剪切速度，其中光学模式的折射率大于第二包层的折射率，以及围绕第二包层延伸的缓冲器。