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1. 发明授权

US06697553B2 Compact, low insertion loss, high yield arrayed waveguide grating 有权
标题翻译：紧凑，低插入损耗，高产量阵列波导光栅
公开(公告)号：US06697553B2
公开(公告)日：2004-02-24
申请号：US10077581
申请日：2002-02-15
申请人： Jyoti Kiron Bhardwaj , Robert James Brainard , David J. Chapman , Douglas E. Crafts , Zi-Wen Dong , David Dougherty , Erik W. Egan , James F. Farrell , Mark B. Farrelly , Niranjan Gopinathan , Kenzo Ishida , David K. Nakamoto , Thomas Thuan Nguyen , Suresh Ramalingam , Steven M. Swain , Sanjay M. Thekdi , Anantharaman Vaidyanathan , Hiroaki Yamada , Yingchao Yan
发明人： Jyoti Kiron Bhardwaj , Robert James Brainard , David J. Chapman , Douglas E. Crafts , Zi-Wen Dong , David Dougherty , Erik W. Egan , James F. Farrell , Mark B. Farrelly , Niranjan Gopinathan , Kenzo Ishida , David K. Nakamoto , Thomas Thuan Nguyen , Suresh Ramalingam , Steven M. Swain , Sanjay M. Thekdi , Anantharaman Vaidyanathan , Hiroaki Yamada , Yingchao Yan
IPC分类号： G02B634
CPC分类号： G02B6/12011 , G02B6/105 , G02B6/12 , G02B6/12016 , G02B6/12021 , G02B6/12026
摘要： A planar lightwave circuit includes an arrayed waveguide grating (AWG), with input and output waveguides, partially curved array waveguides with respective length differences, and planar waveguide regions for focusing optical energy between the input/output and array waveguides. Optimal waveguide widths and spacing along the planar waveguide region facets are disclosed, which are largely determinative of AWG size and optical performance. Also disclosed are optimal cross-sectional waveguide dimensions (e.g., width and height); modified index of refraction difference between the waveguide core and cladding regions; and optimal array waveguide lengths, path length differences, and free spectral range. These features, especially when combined with advanced fiber attachment, passivation and packaging techniques, result in high-yield, high-performance AWGs (both gaussian and flattop versions).
摘要翻译：平面光波电路包括阵列波导光栅（AWG），其具有输入和输出波导，具有相应长度差的部分弯曲阵列波导和用于在输入/输出和阵列波导之间聚焦光能的平面波导区域。公开了沿着平面波导区域面的最佳波导宽度和间距，其主要决定于AWG尺寸和光学性能。还公开了最佳横截面波导尺寸（例如，宽度和高度）; 波导芯和包层区之间的折射率差异; 和最佳阵列波导长度，路径长度差和自由光谱范围。这些特性，特别是结合先进的光纤附着，钝化和封装技术，可以获得高产出，高性能的AWG（高斯型和平板型）。

2. 发明授权

US06606425B1 Transfer molded packages with embedded thermal insulation 有权
标题翻译：具有嵌入式保温的转移成型包装
公开(公告)号：US06606425B1
公开(公告)日：2003-08-12
申请号：US10100277
申请日：2002-03-18
申请人： Douglas E. Crafts , Kenzo Ishida , David J. Chapman , Duane Cook , James F. Farrell , Suresh Ramalingam , Steven M. Swain
发明人： Douglas E. Crafts , Kenzo Ishida , David J. Chapman , Duane Cook , James F. Farrell , Suresh Ramalingam , Steven M. Swain
IPC分类号： G02B612
CPC分类号： G02B6/12026 , G02B6/4253 , G02B6/4273
摘要： An optical component package, in which a transfer molded layer of material (e.g., syntactic foam in one embodiment) is formed at least partially around, or entirely around, the optical component to provide structural and thermal insulation around the component. The optical component may be a planar lightwave circuit (PLC), with a protective passivation layer formed between the PLC and the layer of syntactic foam, to de-couple stresses and thermal transfer between the PLC and the layer of syntactic foam. Strengthening caps, fiber assemblies, and a heater may be provided with the PLC assembly, around which the layer of syntactic foam can also be formed. The protective passivation layer can also be formed between these structures and the syntactic foam; in one embodiment between at least two strengthening caps formed on opposing edges of the PLC. The disclosed package provides numerous structural, thermal and size benefits.
摘要翻译：一种光学部件封装，其中材料的转移模制层（例如，一个实施例中的复合泡沫）至少部分地围绕或完全围绕光学部件形成，以在部件周围提供结构和隔热。光学部件可以是平面光波电路（PLC），在PLC和复合泡沫层之间形成保护钝化层，以解除PLC和复合泡沫层之间的应力和热传递。可以提供加强盖，纤维组件和加热器，PLC组件也可以形成层压泡沫层。保护钝化层也可以在这些结构和复合泡沫之间形成; 在一个实施例中，在形成在PLC的相对边缘上的至少两个加强盖之间。所公开的封装提供了许多结构，热和尺寸的优点。

3. 发明授权

US06583388B2 High thermal efficiency, small form-factor packages including thermally insulative cavities, and transfer molded variants 有权
标题翻译：高热效率，小型包装，包括热绝缘腔，以及传递模塑型
公开(公告)号：US06583388B2
公开(公告)日：2003-06-24
申请号：US10010931
申请日：2001-11-13
申请人： Douglas E. Crafts , David J. Chapman , Steven M. Swain
发明人： Douglas E. Crafts , David J. Chapman , Steven M. Swain
IPC分类号： H05B100
CPC分类号： G02B6/12026
摘要： An optical component package, having an insulative buffer placed against the component, enclosing a first insulative cavity against a temperature-sensitive portion of the component. An outer package provides additional insulation for the component. The buffer may be formed of a soft insulative material, and pressed against the component by an inner surface of the outer package. For the PLC embodiments disclosed, the buffer is planar and includes a frame projecting from its perimeter toward the component to form the cavity. A heater may be positioned proximate the optical component to control its temperature, in which case a second buffer may be placed against the heater, enclosing a second insulative cavity against the heater, aligned with the temperature-sensitive portion of the component. The buffers and insulative cavities of the present invention provide important insulation for optical areas requiring precise temperature control for proper operation.
摘要翻译：一个光学元件封装，其具有放置在该元件上的绝缘缓冲器，该元件封装在该元件的温度敏感部分上的第一绝缘腔。外包装为组件提供额外的绝缘。缓冲器可以由软绝缘材料形成，并且通过外包装的内表面压靠在部件上。对于所公开的PLC实施例，缓冲器是平面的并且包括从其周边朝向部件突出以形成空腔的框架。加热器可以定位在光学部件附近以控制其温度，在这种情况下，第二缓冲器可以抵靠加热器放置，围绕与部件的温度敏感部分对准的加热器的第二绝缘腔。本发明的缓冲器和绝缘腔为需要精确温度控制的光学区域提供重要的绝缘，以适当的操作。

4. 发明授权

US08340523B2 Tunable optical filter 有权
标题翻译：可调滤光片
公开(公告)号：US08340523B2
公开(公告)日：2012-12-25
申请号：US12390056
申请日：2009-02-20
申请人： Jinxi Shen , Jyoti K. Bhardwaj , Barthelemy Fondeur , Douglas E. Crafts , Robert J. Brainard , Boping Xie , David J. Chapman
发明人： Jinxi Shen , Jyoti K. Bhardwaj , Barthelemy Fondeur , Douglas E. Crafts , Robert J. Brainard , Boping Xie , David J. Chapman
IPC分类号： H04J14/02
CPC分类号： G02F1/225 , G02B6/12007 , G02B6/4201 , G02F2201/16 , G02F2203/055
摘要： A tunable PLC optical filter having sequentially connected thermally tunable Mach-Zehnder (MZ) interferometers is described. The MZ interferometers, having free spectral ranges matching ITU frequency grid spacing, are tuned so as to have a common passband centered on the frequency of the signal being selected, while having at least one of the stopbands centered on any other ITU frequency. Any other optical channel that may be present at any other ITU frequency is suppressed as a result. The PLC chip, including a zero-dispersion lattice-filter interleaver stage, a switchable fine-resolution stage and, or a retroreflector for double passing the filter, is packaged into a hot-pluggable XFP transceiver package. A compensation heater is used to keep constant the amount of heat applied to the PLC chip inside the XFP package, so as to lessen temperature variations upon tuning of the PLC optical filter.
摘要翻译：描述了具有顺序连接的可热调谐的马赫 - 曾德（MZ）干涉仪的可调谐PLC光学滤波器。具有与ITU频率格栅间隔相匹配的自由频谱范围的MZ干涉仪被调谐，以具有以所选信号的频率为中心的公共通带，同时具有以任何其它ITU频率为中心的至少一个阻带。因此可能会抑制任何其他ITU频率出现的任何其他光信道。包括零色散格子滤波器交错器级，可切换精细分辨率级和用于双通过滤波器的后向反射器的PLC芯片被封装成可热插拔的XFP收发器封装。使用补偿加热器来保持施加到XFP封装内的PLC芯片的热量，以便在调节PLC滤光器时降低温度变化。

5. 发明申请

US20090263142A1 TUNABLE OPTICAL FILTER 有权
标题翻译：可控光滤波器
公开(公告)号：US20090263142A1
公开(公告)日：2009-10-22
申请号：US12390056
申请日：2009-02-20
申请人： Jinxi Shen , Jyoti K. Bhardwaj , Barthelemy Fondeur , Douglas E. Crafts , Robert J. Brainard , Boping Xie , David J. Chapman
发明人： Jinxi Shen , Jyoti K. Bhardwaj , Barthelemy Fondeur , Douglas E. Crafts , Robert J. Brainard , Boping Xie , David J. Chapman
IPC分类号： H04B10/00
CPC分类号： G02F1/225 , G02B6/12007 , G02B6/4201 , G02F2201/16 , G02F2203/055
摘要： A tunable PLC optical filter having sequentially connected thermally tunable Mach-Zehnder (MZ) interferometers is described. The MZ interferometers, having free spectral ranges matching ITU frequency grid spacing, are tuned so as to have a common passband centered on the frequency of the signal being selected, while having at least one of the stopbands centered on any other ITU frequency. Any other optical channel that may be present at any other ITU frequency is suppressed as a result. The PLC chip, including a zero-dispersion lattice-filter interleaver stage, a switchable fine-resolution stage and, or a retroreflector for double passing the filter, is packaged into a hot-pluggable XFP transceiver package. A compensation heater is used to keep constant the amount of heat applied to the PLC chip inside the XFP package, so as to lessen temperature variations upon tuning of the PLC optical filter.
摘要翻译：描述了具有顺序连接的可热调谐的马赫 - 曾德（MZ）干涉仪的可调谐PLC光学滤波器。具有与ITU频率格栅间隔相匹配的自由频谱范围的MZ干涉仪被调谐，以具有以所选信号的频率为中心的公共通带，同时具有以任何其它ITU频率为中心的至少一个阻带。因此可能会抑制任何其他ITU频率出现的任何其他光信道。包括零色散格子滤波器交错器级，可切换精细分辨率级和用于双通过滤波器的后向反射器的PLC芯片被封装成可热插拔的XFP收发器封装。使用补偿加热器来保持施加到XFP封装内的PLC芯片的热量，以便在调节PLC滤光器时降低温度变化。

6. 发明申请

US20120195544A1 OPTICAL INTERFEROMETER 有权
标题翻译：光学干涉仪
公开(公告)号：US20120195544A1
公开(公告)日：2012-08-02
申请号：US13361683
申请日：2012-01-30
申请人： Jinxi Shen , Hiroaki Yamada , David J. Chapman , Shanrui Ren
发明人： Jinxi Shen , Hiroaki Yamada , David J. Chapman , Shanrui Ren
IPC分类号： G02F1/035 , G02F2/00
CPC分类号： H04B10/677 , G02F1/225 , G02F2/00 , G02F2201/20
摘要： An optical interferometer for demodulating a differential phase shift keying optical signal includes a planar lightwave circuit and at least one free space delay line optically coupled to the planar lightwave circuit. The planar lightwave circuit has a waveguide splitter, a waveguide coupler, and a phase adjuster. In operation, the splitter splits the optical signal into equal portions, the phase adjuster adjusts the relative phase of the optical signal portions, and the free space delay line provides one-bit delay between the portions of the optical signal. The delayed signals are mixed in the waveguide coupler. The free space delay line can be made variable for adjustment of the bit delay for operation at different bit rates, and/or for optimization of the interferometer performance.
摘要翻译：用于解调差分相移键控光信号的光干涉仪包括平面光波电路和光耦合到平面光波电路的至少一个自由空间延迟线。平面光波电路具有波导分路器，波导耦合器和相位调节器。在操作中，分离器将光信号分成相等的部分，相位调节器调节光信号部分的相对相位，并且自由空间延迟线在光信号的部分之间提供一位延迟。延迟信号在波导耦合器中混合。可以使自由空间延迟线可变，用于调整不同比特率下的操作的位延迟和/或干涉仪性能的优化。

7. 发明授权

US08983244B2 Optical interferometer 有权
标题翻译：光学干涉仪
公开(公告)号：US08983244B2
公开(公告)日：2015-03-17
申请号：US13361683
申请日：2012-01-30
申请人： Jinxi Shen , Hiroaki Yamada , David J. Chapman , Shanrui Ren
发明人： Jinxi Shen , Hiroaki Yamada , David J. Chapman , Shanrui Ren
IPC分类号： G02B6/12 , G02B6/26 , H04B10/67 , G02F2/00 , G02F1/225
CPC分类号： H04B10/677 , G02F1/225 , G02F2/00 , G02F2201/20
摘要： An optical interferometer for demodulating a differential phase shift keying optical signal includes a planar lightwave circuit and at least one free space delay line optically coupled to the planar lightwave circuit. The planar lightwave circuit has a waveguide splitter, a waveguide coupler, and a phase adjuster. In operation, the splitter splits the optical signal into equal portions, the phase adjuster adjusts the relative phase of the optical signal portions, and the free space delay line provides one-bit delay between the portions of the optical signal. The delayed signals are mixed in the waveguide coupler. The free space delay line can be made variable for adjustment of the bit delay for operation at different bit rates, and/or for optimization of the interferometer performance.
摘要翻译：用于解调差分相移键控光信号的光干涉仪包括平面光波电路和光耦合到平面光波电路的至少一个自由空间延迟线。平面光波电路具有波导分路器，波导耦合器和相位调节器。在操作中，分离器将光信号分成相等的部分，相位调节器调节光信号部分的相对相位，并且自由空间延迟线在光信号的部分之间提供一位延迟。延迟信号在波导耦合器中混合。可以使自由空间延迟线可变，用于调整不同比特率下的操作的位延迟和/或干涉仪性能的优化。

8. 发明授权

US4871309A Apparatus for preparing samples 失效
标题翻译：用于制备样品的装置
公开(公告)号：US4871309A
公开(公告)日：1989-10-03
申请号：US222722
申请日：1988-07-21
申请人： David J. Chapman
发明人： David J. Chapman
IPC分类号： B01L99/00 , G01N1/28 , G01N1/44
CPC分类号： G01N1/44
摘要： An apparatus for producing a sample is disclosed which has a tilting mechanism (12, 14, 22). The tilting mechanism has a crucible holder (70) releasably coupled thereto and a crucible (100), which is provided with a flange (102), is insertable into the crucible (70) so that the crucible can be tilted by the tilting mechanism. A dish (46) is supported by a support (44) so that the tilting mechanism can tilt the crucible (100) to pour the contents of the crucible into the dish (46). Burners (48 and 50) are provided for heating the contents of the crucible (100) and dish (46).

9. 发明授权

US08213752B2 Coherent optical mixer and a method of coherent detection of light 有权
标题翻译：相干光学混合器和光的相干检测方法
公开(公告)号：US08213752B2
公开(公告)日：2012-07-03
申请号：US12480956
申请日：2009-06-09
申请人： David J. Chapman , David J. Dougherty
发明人： David J. Chapman , David J. Dougherty
IPC分类号： G02B6/26
CPC分类号： G02B6/125 , G02B6/2713 , G02B6/2793 , G02B2006/12147 , G02B2006/12159
摘要： A coherent planar lightwave circuit (PLC) optical mixer chip is described comprising a matched pair of symmetrical four-coupler interferometers for in-phase and in-quadrature detection of two polarization components of light using a polarization diversity arrangement. The waveguide structure of the chip is symmetrical about two orthogonal central axes of the chip, whereby the effect of temperature gradients on the mixer is reduced. A light traveling from an input to an output of any of the two interferometers is cross-coupled by one of the two couplers it passes through, and is bar-coupled by the other of the two couplers, so as to compensate for polarization, wavelength, and manufacturing process dependence of bar-coupling with that of cross-coupling.
摘要翻译：描述了一种相干平面光波电路（PLC）光混合器芯片，其包括一对对称的四耦合干涉仪，用于使用偏振分集装置同时和正交检测光的两个偏振分量。芯片的波导结构对称于芯片的两个正交中心轴，从而降低了混频器温度梯度的影响。从两个干涉仪中的任一个的输入到输出的光线交叉耦合，它们通过两个耦合器中的一个耦合，并且被两个耦合器中的另一个耦合器进行棒耦合，以补偿偏振波长，并且制造工艺与棒耦合的依赖性与交叉耦合的相关性。

10. 发明授权

US07077773B2 Drive assembly with dynamic tensioning device 失效
标题翻译：带动态张紧装置的驱动装置
公开(公告)号：US07077773B2
公开(公告)日：2006-07-18
申请号：US10420372
申请日：2003-04-21
申请人： David J. Chapman , John R. Rice
发明人： David J. Chapman , John R. Rice
IPC分类号： F16H7/10
CPC分类号： F16H7/14 , E05F15/646 , E05Y2201/648 , E05Y2201/654 , E05Y2201/72 , F16H2007/0808
摘要： A drive assembly for a closed loop cable system in which a flexible driver member drives a door or the like back and forth has the flexible drive member wrapped around and driven by a drive pulley. The drive assembly includes a motor unit having a motor shaft that rotates about a drive axis for rotating the drive pulley about a pulley axis, and a tensioning mechanism for adjusting the position of the pulley axis with respect to the drive axis responsive to tension in the flexible drive member.
摘要翻译：用于闭环电缆系统的驱动组件，其中柔性驱动器构件来回驱动门等，其中柔性驱动构件缠绕并由驱动滑轮驱动。所述驱动组件包括马达单元，所述马达单元具有围绕驱动轴线旋转的马达轴，所述驱动轴线围绕滑轮轴线旋转所述驱动滑轮;以及张紧机构，用于响应于所述驱动轴线中的张力来调节所述滑轮轴线相对于所述驱动轴线的位置柔性驱动构件。

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