公开(公告)号：US5136671A

公开(公告)日：1992-08-04

申请号：US748131

申请日：1991-08-21

Applicant: Corrado Dragone

Inventor： Corrado Dragone

IPC: H04B10/02 ,  G02B6/12 ,  G02B6/124 ,  G02B6/34

CPC classification number: G02B6/12011 ,  G02B6/124

Abstract: An N.times.N integrated optical interconnection apparatus capable of switching, multiplexing, or demultiplexing a large number of input and output wavelength channels achieves low levels of crosstalk and insertion loss. Two substantially identical N.times.M star couplers are connected by an optical diffraction grating comprising M unequal length waveguides spaced from one another by predetermined amounts. Each coupler comprises a dielectric slab defining a free space region between two periodic arrays of waveguides, each radially directed toward a virtual focal point. The arrays are configured so that their respective foci are located at a predetermined distance away from and outside the free space region to minimize phase errors caused by mutual coupling between adjacent waveguides. Specifically, the focal point of each array connected to each star coupler may be located so that it coincides with the phase center of the other array connected to each coupler. Residual phase errors may be reduced by appropriately setting the lengths of the waveguides in the optical grating between the two star couplers. The length difference between any two adjacent waveguides in the grating is not constant throughout the grating.

Abstract translation: 能够切换，复用或解复用大量输入和输出波长信道的NxN集成光互连装置实现了低水平的串扰和插入损耗。 两个基本上相同的NxM星形耦合器通过光学衍射光栅连接，该光学衍射光栅包括相互隔开预定量的M个不相等长度的波导。 每个耦合器包括限定两个周期性波导阵列之间的自由空间区域的介质板，每个波导阵列径向指向虚拟焦点。 阵列被配置成使得它们各自的焦点位于距离自由空间区域和外部预定距离处，以最小化由相邻波导之间的相互耦合引起的相位误差。 具体地，连接到每个星形耦合器的每个阵列的焦点可以被定位成使得其与连接到每个耦合器的另一个阵列的相位中心一致。 可以通过适当地设置两个星形耦合器之间的光栅中的波导的长度来减小残余相位误差。 光栅中任何两个相邻波导之间的长度差在整个光栅中不是恒定的。

公开(公告)号：US4533919A

公开(公告)日：1985-08-06

申请号：US542137

申请日：1983-10-14

Applicant: Corrado Dragone

Inventor： Corrado Dragone

IPC: H01Q13/02

CPC classification number: H01Q13/0208

Abstract: The present invention relates to an antenna feed arrangement capable of providing a zero reflection response at a first frequency of interest and a maximally flat response at a widely separated second frequency of interest. The feed arrangement comprises a smooth-walled waveguide section at a first end, a corrugated waveguide section at a second end designed to provide the zero response at the first frequency, and a quarter-wave transformer waveguide section disposed between the smooth-walled and corrugated waveguide sections designed to provide the maximally flat response at the second frequency. The quarter-wave transformer section comprises a plurality of N corrugated waveguide subsections, where N.gtoreq.2, which comprise corrugation depths corresponding to the corrugation depths in the corrugated waveguide section. Additionally, the gaps between corrugations differ in adjacent subsections in a direction away from the entrance waveguide section and have a predetermined gap ratio between adjacent subsections.

Abstract translation: 本发明涉及一种能够在感兴趣的第一频率处提供零反射响应并且在广泛分开的第二感兴趣频率处具有最大平坦响应的天线馈送装置。 馈送装置包括在第一端处的平滑壁波导部分，设计成在第一频率处提供零响应的第二端处的波纹波导部分和设置在平滑壁和波纹状之间的四分之一波长的变压器波导部分 波导段被设计成在第二频率处提供最大平坦的响应。 四分之一波长变压器部分包括多个N波纹波导子部分，其中N≥2，其包括对应于波纹波导部分中的波纹深度的波纹深度。 此外，波纹之间的间隙在远离入口波导部分的方向上在相邻子部分中不同，并且在相邻子部分之间具有预定的间隙比。

公开(公告)号：US4491848A

公开(公告)日：1985-01-01

申请号：US412792

申请日：1982-08-30

Applicant: Corrado Dragone

Inventor： Corrado Dragone

IPC: H01Q19/19

CPC classification number: H01Q19/191

Abstract: The present invention relates to an antenna arrangement which uses a large offset spherical main reflector to communicate with several, spaced-apart, remote locations. Large aberrations caused by the main reflector are corrected by a first subreflector forming a small image of the main reflector at a conjugate image surface and a second subreflector which is disposed at the image location and is shaped to correct for the aberrations caused by the main reflector. Such correction is, to a good approximation, frequency independent and provides aberration free operation at feeds adjacent each other and associated with remote locations having small differential angles of incidence on the center of the main reflector.

Abstract translation: 本发明涉及一种使用大偏移球形主反射器与多个间隔开的远程位置通信的天线装置。 由主反射器引起的大像差由在共轭图像表面处形成主反射器的小图像的第一子反射器和设置在图像位置处的第二子反射器来校正，并且被成形为校正由主反射器引起的像差 。 这种校正是为了很好的近似而与频率无关，并且在彼此相邻并且与在主反射器的中心处具有小的入射差小的偏离角度的远程位置相关联地提供无差错运算。

公开(公告)号：US4468672A

公开(公告)日：1984-08-28

申请号：US315670

申请日：1981-10-28

Applicant: Corrado Dragone

Inventor： Corrado Dragone

IPC: H01Q15/08 ,  H01Q13/02 ,  H01Q13/24 ,  H01Q19/08

CPC classification number: H01Q19/08 ,  H01Q13/0208 ,  H01Q13/24

Abstract: The present invention relates to hybrid mode feeds which are capable of handling very wide bandwidths. In the present feed arrangements, a dominant TE.sub.11 mode is converted to the HE.sub.11 hybrid mode which is then launched. The TE.sub.11 to HE.sub.11 mode conversion is achieved by inserting a circular dielectric rod (12) into a flared end (11) of a smooth-walled cylindrical feedhorn until a small cylindrical section of the dielectric rod engages with the inner wall (15) of the unflared portion of the feedhorn. In one feed arrangement, the other end of the dielectric rod is similarly inserted into a flared end (21) of a corrugated cylindrical feedhorn section (22) until a short longitudinal section of the cylindrical portion of the rod is concentric with the corrugations of an unflared section of the feedhorn to provide a transition for the HE.sub.11 mode into the corrugated waveguide for subsequent launch. In a second feed arrangement, the dielectric rod at the aperture of the smooth-walled flared feedhorn is flared outward to end in a curved configuration which is shaped to minimize reflections back into the dielectric rod and provide a predetermined wavefront at the aperture of the feed.

Abstract translation: 本发明涉及能够处理非常宽的带宽的混合模式馈送。 在本馈送装置中，主导TE11模式被转换为随后启动的HE11混合模式。 通过将圆形介电棒（12）插入光滑圆柱形馈电喇叭的扩口端（11）中直到介质杆的小圆柱形部分与内壁（15）接合来实现TE11至HE11模式转换 饲料喇叭的未张力部分。 在一个馈送装置中，介电棒的另一端类似地插入到波纹圆柱形馈电喇叭部分（22）的扩口端（21）中，直到杆的圆柱形部分的短的纵向部分与 供应喇叭的未张开部分，以提供HE11模式转换到波纹波导中以供后续发射。 在第二馈送装置中，平滑壁扩张的馈电喇叭的孔处的电介质杆向外展开，以弯曲的形状结束，其被成形为使反射回到介电棒中的最小化并且在馈电孔处提供预定的波前 。

公开(公告)号：US4425566A

公开(公告)日：1984-01-10

申请号：US297842

申请日：1981-08-31

Applicant: Corrado Dragone

Inventor： Corrado Dragone

IPC: H01Q19/19

CPC classification number: H01Q19/192

Abstract: The present invention relates to an antenna arrangement which uses an imaging reflector (10) combined with a small feed or horn (14) which is capable of launching or receiving a spherical wavefront (18) to obtain a nearly frequency independent field distribution over a large antenna aperture. The antenna arrangement comprises a parabolic main reflector (10) disposed confocally with one focal point of a subreflector means (12) and a feed (14) disposed with the apex of the spherical wavefront at the other focal point of the subreflector means and the aperture of the feed centered on the image of the main reflector. If the rim of the feed aperture corresponds to an image of the edge of the main reflector, spill-over is substantially eliminated. Generally, any feed arrangement comprising a feed and subreflector means which transforms a spherical wavefront from the feed into a spherical wavefront emanating from the focal point of the parabolic main reflector can be used.

Abstract translation: 本发明涉及一种天线装置，其使用与能够发射或接收球面波前（18）的小型馈电或喇叭（14）组合的成像反射器（10），以在大的频率上获得近乎频率的独立场分布 天线孔径。 所述天线装置包括与子反射器装置（12）的一个焦点共同配置的抛物面主反射器（10）和在子反射器装置的另一个焦点处设置有球面波前的顶点的进给（14） 的馈送以主反射器的图像为中心。 如果进料孔的边缘对应于主反射器的边缘的图像，则基本上消除溢出。 通常，可以使用包括馈送和子反射器装置的任何馈送装置，其将来自馈送的球面波前转换成从抛物线主反射器的焦点发出的球面波阵面。

公开(公告)号：US6058233A

公开(公告)日：2000-05-02

申请号：US109244

申请日：1998-06-30

Applicant: Corrado Dragone

Inventor： Corrado Dragone

IPC: G02B6/122 ,  G02B6/132 ,  G02B6/34 ,  G02B6/26

CPC classification number: G02B6/12011 ,  G02B6/1228 ,  G02B6/132

Abstract: An optical interconnection apparatus including waveguide arrays, such as grating routers and star couplers, has reduced coupling loss by reducing the width of the waveguides in the array, where they connect to the free-space region, so that they are smaller than the gaps between adjacent waveguides. The free-space region is formed by a slab whose thickness is tapered in a transition region, where it connects to the waveguide arrays, so as to essentially eliminate any mismatch loss that would otherwise be caused in an abrupt junction of the waveguide arrays with the free-space region.

Abstract translation: 包括诸如光栅路由器和星形耦合器之类的波导阵列的光学互连装置通过减小阵列中的波导的宽度而减小了耦合损耗，其中它们连接到自由空间区域，使得它们小于 相邻波导。 自由空间区域由其厚度在过渡区域中渐缩的板形成，其中它连接到波导阵列，以便基本上消除否则将在波导阵列与突波接头的突然接合中引起的失配损耗 自由空间区域。

公开(公告)号：US6023544A

公开(公告)日：2000-02-08

申请号：US998354

申请日：1997-12-24

Applicant: Corrado Dragone

Inventor： Corrado Dragone

IPC: H04B10/02 ,  H04B10/08 ,  G06B6/28

CPC classification number: H04B10/07955 ,  H04B10/079

Abstract: Monitoring of the wavelength and power in an optical network is realized by including a wavelength router in which output ports at particular locations are included to derive samples for the monitoring. A periodic variation in the optical length of the arms of the grating in the router is used to focus additional power at these selected locations. Such a router can also be used for multiplexing and demultiplexing optical signals.

Abstract translation: 通过包括波长路由器实现对光网络中的波长和功率的监视，其中包括特定位置处的输出端口以导出用于监视的采样的波长路由器。 在路由器中的光栅臂的光学长度的周期性变化被用于在这些选择的位置聚焦附加的功率。 这样的路由器也可以用于复用和解复用光信号。

公开(公告)号：US5629991A

公开(公告)日：1997-05-13

申请号：US514038

申请日：1995-08-11

Applicant: Corrado Dragone

Inventor： Corrado Dragone

IPC: G02B6/122 ,  G02B5/30 ,  G02B6/34 ,  G02B6/26

CPC classification number: G02B6/12011 ,  G02B6/12023

Abstract: A method is provided for reducing the polarization shift between different modes of an optical signal propagating in an optical grating having a plurality of waveguides extending in a common plane. The method includes the step of imparting curvature to the optical grating along a line that traverses the plurality of waveguides in a direction that is substantially perpendicular to the direction in which the optical signal propagates. The curvature varies in a nonuniform manner along the line to which it is imparted. The curvature may vary in a substantially linear manner along this line, which in some cases may define a symmetry axis of the grating. Sufficient curvature may be imparted to substantially eliminate the polarization shift. The curvature may be imparted by flexing the optical grating at two contact points respectively located near a longest and shortest of the plurality of waveguides.

Abstract translation: 提供了一种减少在具有在公共平面中延伸的多个波导的光栅中传播的光信号的不同模式之间的偏振偏移的方法。 该方法包括沿着基本上垂直于光信号传播方向的方向沿着穿过多个波导的线向光栅施加曲率的步骤。 曲率沿着被赋予的线不均匀地变化。 曲率可以沿着该线基本上线性地变化，这在一些情况下可以限定光栅的对称轴。 可以赋予足够的曲率以基本上消除偏振偏移。 可以通过在分别位于多个波导中最长和最短波导附近的两个接触点处弯曲光栅来赋予曲率。

公开(公告)号：US5212758A

公开(公告)日：1993-05-18

申请号：US866614

申请日：1992-04-10

Applicant: Renen Adar ,  Corrado Dragone ,  Charles H. Henry

Inventor： Renen Adar ,  Corrado Dragone ,  Charles H. Henry

IPC: G02B6/122 ,  G02B6/12 ,  G02B6/124 ,  G02B6/26 ,  G02B6/28 ,  G02B6/34

CPC classification number: G02B6/12011 ,  G02B6/1245 ,  G02B6/2804

Abstract: An integrated optic device useful as a planar lens or a low order array multiplexer comprises a pair of optical couplers and an array of plural waveguides extending between the couplers in an "S" configuration to provide closely spaced optical path lengths. An "S" configuration provides equal path lengths for an optical lens. Incremental lengths added to the "S" in the region between curve reversal can provide small path length increments for a low order array multiplexer or demultiplexer.

公开(公告)号：US5039993A

公开(公告)日：1991-08-13

申请号：US440825

申请日：1989-11-24

Applicant: Corrado Dragone

Inventor： Corrado Dragone

IPC: G02B6/00 ,  G02B6/04 ,  G02B6/12 ,  G02B6/122 ,  H01Q21/06 ,  H01Q21/08 ,  H01Q25/04 ,  H04B10/02 ,  H04B10/28 ,  H04Q3/30

CPC classification number: H01Q25/04 ,  H01Q21/064

Abstract: A waveguide array comprising a plurality of waveguides which are each outwardly tapered at the aperture of the array in accordance with a predetermined criteria chosen to increase waveguide efficiency. The tapering serves to gradually transform a fundamental Bloch mode, propagating through the waveguide array, into a plane wave in a predetermined direction, and then to launch the plane wave into free space in the predetermined direction. In another embodiment, the waveguides are positioned relative to one another in order to satisfy the predetermined criteria.