公开(公告)号：US06563779B1

公开(公告)日：2003-05-13

申请号：US09595433

申请日：2000-06-15

申请人： Mark E. McDonald ,  Robert R. McLeod ,  Andrew J. Daiber

发明人： Mark E. McDonald ,  Robert R. McLeod ,  Andrew J. Daiber

IPC分类号： G11B700

CPC分类号： G11B7/0938 ,  G11B7/00781 ,  G11B7/0901 ,  G11B7/1381 ,  G11B7/24044 ,  G11B2007/0013

摘要： A tracking error signal generation apparatus and method which utilizes confocal detection with a split detector and a differencing circuit for generation of tracking error signals. A first lens is positioned in the path of a light beam returning from an optical medium. A pinhole is positioned in the path of the light beam after the first lens and proximate to the focal plane of the first lens. A second lens is positioned in the path of the light beam after the pinhole, and a split detector, having equal halves is positioned in the path of the light beam after the second lens. A differencing circuit is operatively coupled to each of the halves of the split detector. In operation, a light beam is focused by an optical head onto a track in the optical medium, and the reflection of the beam from the optical medium is directed through the first lens, through the pinhole, through the second lens, and onto the split detector. When the focus of the light beam is centered on the track, the reflected light reaching the split detector is evenly distributed on the two halves of the detector, such that the differencing circuit will generate a tracking error signal (TES) having nominally a zero value. When the focus of the light beam is off-center with respect to the track, the reflected light received by detector is unevenly distributed on the two halves of the detector such that the differencing circuit generates a non-zero tracking error signal, which will be of positive or negative value depending upon the direction off-center of the light beam focus spot. The tracking error signals thus generated are communicated to a servo system which will reposition the optical head to maintain the light beam focus spot on the center of the track.

摘要翻译： 一种跟踪误差信号产生装置和方法，其利用具有分离检测器的共焦检测和用于产生跟踪误差信号的差分电路。 第一透镜位于从光学介质返回的光束的路径中。 针孔位于第一透镜之后的光束的路径中并且靠近第一透镜的焦平面。 第二透镜位于针孔之后的光束的路径中，并且具有相等的一半的分割检测器位于第二透镜之后的光束的路径中。 差分电路可操作地耦合到分离检测器的每个半部。 在操作中，光束被光学头聚焦在光学介质中的轨道上，并且来自光学介质的光束的反射通过第一透镜，穿过针孔穿过第二透镜并被引导到分裂 探测器。 当光束的焦点以轨迹为中心时，到达分割检测器的反射光均匀分布在检测器的两半上，使得差分电路将产生标称为零值的跟踪误差信号（TES） 。 当光束的焦点相对于轨道偏心时，由检测器接收的反射光不均匀地分布在检测器的两半上，使得差分电路产生非零跟踪误差信号，这将是 取决于光束聚焦点的偏心方向的正值或负值。 如此生成的跟踪误差信号被传送到伺服系统，该伺服系统将重新定位光头以将光束聚焦点保持在轨道的中心。

公开(公告)号：US06437916B1

公开(公告)日：2002-08-20

申请号：US09727439

申请日：2000-12-04

申请人： Robert R. McLeod ,  Adam Cohen

发明人： Robert R. McLeod ,  Adam Cohen

IPC分类号： G02B530

CPC分类号： G02B5/3083 ,  Y10S359/90

摘要： The invention provides an optical system for use in a stable, temperature-insensitive birefringent crystal interferometer (BCI). The optical system includes a first block of light transmissive birefringent material having an input port and an output port, the material having in the spectral region of desired device operation a net retardance at a first temperature, and straining means for inducing a strain in one of the first block and a second block of light transmissive material optically coupled to the first block, the strain induced for maintaining the net retardance substantially unchanged from the net retardance at least a second other temperature. Advantageously, the optical system uses a single variety of crystal, which is cheaper, more robust, and has better performance than BCIs having two crystal varieties.

摘要翻译： 本发明提供一种用于稳定的不敏感双折射晶体干涉仪（BCI）的光学系统。 光学系统包括具有输入端口和输出端口的第一透光双折射材料块，该材料在所需器件操作的光谱区域具有在第一温度下的净延迟，以及用于在第一温度之一中诱发应变的应变装置 光学耦合到第一块的第一块和第二光透射材料块，所述应变被引导用于将净延迟保持在与至少第二其它温度的净延迟性基本上不变的位置。 有利地，光学系统使用比具有两个晶体品种的BCI更便宜，更坚固并且具有更好性能的单种晶体。

公开(公告)号：US07035505B2

公开(公告)日：2006-04-25

申请号：US10896779

申请日：2004-07-22

申请人： Jinxi Shen ,  Robert R. McLeod ,  Douglas E. Crafts ,  Barthelemy Fondeur ,  Yong Ding ,  Pang-Chen Sun

发明人： Jinxi Shen ,  Robert R. McLeod ,  Douglas E. Crafts ,  Barthelemy Fondeur ,  Yong Ding ,  Pang-Chen Sun

IPC分类号： G02B6/28 ,  H04B10/00

CPC分类号： H04B10/0795 ,  G02B6/12019

摘要： An apparatus for monitoring an input optical signal at a plurality of distinct optical frequencies is disclosed wherein a demultiplexing arrayed waveguide grating (AWG) having a plurality of M>1 Vernier input ports is disposed between an optical switch and a photodiode array coupled to the output ports of the AWG. In operation, the optical switch sequentially provides the input optical signal into each of the Vernier ports, and signals detected by photodiodes are stored in a memory unit. The apparatus is capable of monitoring the input optical signal with a frequency step which is M times smaller than a frequency spacing between the AWG transmission bands, and obtain M frequency-resolved readings from each photodiode.

摘要翻译： 公开了一种用于监控多个不同光频率的输入光信号的装置，其中具有多个M> 1游标输入端口的解复用阵列波导光栅（AWG）被布置在光开关和耦合到输出端的光电二极管阵列之间 特设工作组的港口。 在操作中，光开关顺序地将输入光信号提供给每个游标端口，并且由光电二极管检测的信号被存储在存储器单元中。 该装置能够以比AWG传输频带之间的频率间隔小M倍的频率步长来监测输入光信号，并且从每个光电二极管获得M个频率分辨的读数。

公开(公告)号：US07031610B2

公开(公告)日：2006-04-18

申请号：US10160636

申请日：2002-06-03

申请人： Tokuyuki Honda ,  Robert R. McLeod

发明人： Tokuyuki Honda ,  Robert R. McLeod

IPC分类号： G02B6/30

CPC分类号： G02B6/2938 ,  G02B6/29365 ,  G02B6/29367 ,  G02B6/32

摘要： A diffraction-compensated WDM (wavelength division multiplexer) uses TTFs (thin film filters) as concave mirrors. The WDM has a plurality of filter elements for guiding the optical signal along a predetermined optical path, each filter element being transparent to a predetermined wavelength range and including compensating means for at least partially compensating for diffraction of the optical signal. Each filter element has a thin film coated on a substrate, and the compensating means is a curved surface of each thin film. The WDM is more robust than prior art WDM devices using flat TTFs.

公开(公告)号：US06322933B1

公开(公告)日：2001-11-27

申请号：US09229457

申请日：1999-01-12

申请人： Andrew J. Daiber ,  Robert R. McLeod ,  Tokuyuki Honda

发明人： Andrew J. Daiber ,  Robert R. McLeod ,  Tokuyuki Honda

IPC分类号： G03H126

CPC分类号： G11B7/24085 ,  G03H1/30 ,  G11B7/0065 ,  Y10S430/146

摘要： A photoactive medium has a complex format grating written thereon, the complex format grating including at least three component gratings, each of the component gratings characterized by a unique grating vector. Methods for writing the complex format grating include the steps of providing a photoactive medium; and focussing a plurality of pairs of mutually coherent light beams into a focal plane in the medium.

摘要翻译： 光敏介质具有写在其上的复杂格式光栅，复格式光栅包括至少三个分量光栅，每个分量光栅的特征在于唯一的光栅矢量。 写入复杂格式光栅的方法包括提供光活性介质的步骤; 并将多对相互相干的光束聚焦到介质中的焦平面中。

公开(公告)号：US06288986B1

公开(公告)日：2001-09-11

申请号：US09229012

申请日：1999-01-12

申请人： Mark E. McDonald ,  Robert R. McLeod

发明人： Mark E. McDonald ,  Robert R. McLeod

IPC分类号： G11B700

CPC分类号： G11B7/1381 ,  G11B7/0908 ,  G11B7/0916 ,  G11B7/0917

摘要： An improved focus error signal generator device and an optical data delivery and detection system including an optical lens disposed in the path of a return read beam and a birefringent plate disposed in the path of the return beam of light after the optical lens, wherein the birefringent plate provides for a first and second focal plane of corresponding first and second polarization. A pinhole is disposed in the path of the return read beam after the birefringent plate and in close proximity to first and second focal planes. A polarizing beam splitter is positioned after the second focal plane and serves to split the return read beam into two light beams of first and second polarization. First and second detectors are disposed in the path of corresponding first and second polarization light beams. The detectors are connected to the inputs of an electrical differencing circuit that has an output to an optical head servo system.

摘要翻译： 一种改进的聚焦误差信号发生器装置和光学数据传送和检测系统，包括设置在返回读取光束的路径中的光学透镜和布置在光学透镜之后的返回光束的路径中的双折射板，其中双折射 板提供相应的第一和第二极化的第一和第二焦平面。 在双折射板之后并且靠近第一焦平面和第二焦平面，针孔设置在返回读取光束的路径中。 偏振分束器位于第二焦平面之后，用于将返回读取光束分成两束第一和第二偏振光束。 第一和第二检测器设置在对应的第一和第二偏振光束的路径中。 检测器连接到具有输出到光头伺服系统的电差分电路的输入端。

公开(公告)号：US06256271B1

公开(公告)日：2001-07-03

申请号：US09229505

申请日：1999-01-12

申请人： Robert R. McLeod

发明人： Robert R. McLeod

IPC分类号： G11B700

CPC分类号： G11B7/00781 ,  G11B7/0908 ,  G11B7/0916 ,  G11B7/0917 ,  G11B7/0938 ,  G11B7/1381

摘要： A focus error signal generator device and an optical data delivery and detection system including an optical lens disposed in the path of a return read light beam, and first and second polarizers of corresponding first and second polarizations having corresponding first and second pinholes formed therein wherein the polarizers are spaced apart, disposed in the path of the read light beam after the optical lens. A polarizing beam splitter is disposed in the path of the read light beam after the second polarizer and serves to split the read light beam into a first light beam of first polarization and a second light beam of second polarization. First and second light beams are received by corresponding first and second optical detectors and an electrical differencing circuit having inputs to the first and second detectors and an output to an optical head servo system. A method for focus error signal generation includes the steps of focussing the read light beam at a point of focus within a focal plane; providing for first and second polarizers of corresponding first and second polarization having corresponding pinholes formed therein, wherein first and second polarizers are disposed sequentially in the path of the read light beam; providing for a polarizing beam splitter disposed in the path of the read light beam after the second polarizer that splits the read light beam into first and second light beams of corresponding first and second polarizations; providing for first and second detectors disposed in the path of corresponding first and second light beams; and generating a focus error signal related to the difference between the output of the first detector and the output of the second detector.

摘要翻译： 一种聚焦误差信号发生器装置和光学数据传送和检测系统，包括设置在返回读取光束的路径中的光学透镜，以及对应的第一和第二偏振的第一和第二偏振器，其中形成有对应的第一和第二针孔，其中， 偏振器间隔开，设置在光学透镜之后的读取光束的路径中。 偏振分束器设置在第二偏振器之后的读取光束的路径中，并用于将读取的光束分成第一偏振的第一光束和第二偏振的第二光束。 第一和第二光束由对应的第一和第二光学检测器和具有到第一和第二检测器的输入和光学头伺服系统的输出的电差分电路接收。 用于聚焦误差信号产生的方法包括将读取的光束聚焦在焦平面内的焦点处的步骤; 提供对应的第一和第二偏振器的第一和第二偏振器具有形成在其中的相应的针孔，其中第一和第二偏振器依次设置在读取光束的路径中; 提供设置在所述读取光束的路径中的偏振分束器，所述偏振分束器在所述第二偏振器之后将所述读取的光束分成相应的第一和第二偏振的第一和第二光束; 提供设置在对应的第一和第二光束的路径中的第一和第二检测器; 以及产生与第一检测器的输出与第二检测器的输出之间的差异相关的聚焦误差信号。

公开(公告)号：US09081148B2

公开(公告)日：2015-07-14

申请号：US13042116

申请日：2011-03-07

申请人： Guillermo J. Tearney ,  Brett E. Bouma ,  Joseph A. Gardecki ,  Linbo Liu ,  Robert R. McLeod

发明人： Guillermo J. Tearney ,  Brett E. Bouma ,  Joseph A. Gardecki ,  Linbo Liu ,  Robert R. McLeod

IPC分类号： G02B6/06 ,  G02B6/32 ,  A61B5/00

CPC分类号： A61B5/0066 ,  A61B5/0044 ,  A61B5/0075 ,  A61B5/0084 ,  G01B9/02091 ,  G02B6/32

摘要： Exemplary embodiments of apparatus, systems and methods can be provided for providing at least one electro-magnetic radiation to at least one sample. For example, a plurality of wave-guiding arrangements can be provided which are configured to (i) provide the electro-magnetic radiation(s), and (ii) at a point of emission of each of the wave guiding arrangements, cause a phase of each of the electro-magnetic radiation(s) to have a predetermined value. The exemplary apparatus can be part of a probe. Further the exemplary apparatus can include an interferometric arrangement provided in communication with the probe and/or be part of the probe.

摘要翻译： 可以提供装置，系统和方法的示例性实施例，以向至少一个样品提供至少一个电磁辐射。 例如，可以提供多个波导装置，其被配置为（i）提供电磁辐射，和（ii）在每个波导装置的发射点处，引起相位 每个电磁辐射具有预定值。 示例性装置可以是探针的一部分。 此外，示例性装置可以包括与探针连接和/或成为探针的一部分提供的干涉装置。

公开(公告)号：US08697346B2

公开(公告)日：2014-04-15

申请号：US13078485

申请日：2011-04-01

申请人： Robert R. McLeod ,  Christopher N. Bowman ,  Timothy F. Scott ,  Amy C. Sulivan

发明人： Robert R. McLeod ,  Christopher N. Bowman ,  Timothy F. Scott ,  Amy C. Sulivan

IPC分类号： G03F7/00 ,  G03F7/20

CPC分类号： G03F7/00 ,  C08K5/0025 ,  C08K5/18 ,  G02B5/32 ,  G03F7/0037 ,  G03F7/027 ,  G03F7/0275 ,  G03F7/031 ,  G03F7/095 ,  G03F7/203 ,  G03F7/2051

摘要： Methods, devices, systems, and materials are disclosed for diffraction unlimited photofabrication. A method is provided where a photoresponsive material is illuminated with a first optical pattern at a first wavelength of light. The first wavelength of light alters a solubility of the photoresponsive organic material. The photoresponsive material is also illuminated with a second optical pattern at a second wavelength of light. The second wavelength of light hinders the ability of the first wavelength of light to alter the solubility of the photoresponsive organic material where the second optical pattern overlaps the first optical pattern. The photoresponsive organic material is then developed.

摘要翻译： 公开了用于衍射无限制造的方法，装置，系统和材料。 提供一种方法，其中光响应材料在第一波长的光下用第一光学图案照亮。 光的第一波长改变光响应有机材料的溶解度。 光响应材料也用第二波长的光照射第二光学图案。 光的第二波长阻碍第一波长的光改变光响应有机材料在第二光学图案与第一光学图案重叠的溶解度的能力。 然后开发光响应有机材料。

公开(公告)号：US08597871B2

公开(公告)日：2013-12-03

申请号：US11993015

申请日：2006-06-16

申请人： Robert R. McLeod

发明人： Robert R. McLeod

IPC分类号： G03F7/20 ,  G02B6/12 ,  G02B21/18

CPC分类号： B29C59/16 ,  B29C2035/0838 ,  G02B6/12 ,  G02B6/12002 ,  G03F7/2053 ,  G03F7/70025 ,  G03F7/70416

摘要： A method of creating a region of index change in a photopolymer includes providing a photopolymer having a photosensitivity to light of a particular wavelength and creating a region of index change in the photopolymer by applying direct write lithography to expose the photopolymer of the region to light that includes the particular wavelength.

摘要翻译： 在光聚合物中产生折射率变化区域的方法包括提供对具有特定波长的光的光敏性的光聚合物，并通过应用直接写光刻技术在光聚合物中产生折射率变化的区域，以使该区域的光聚合物曝光， 包括特定的波长。