公开(公告)号：US20070053651A1

公开(公告)日：2007-03-08

申请号：US11210231

申请日：2005-08-23

申请人： Shoji Akiyama ,  Ivan Celanovic ,  Natalija Jovanovic ,  Francis O'Sullivan ,  Kazumi Wada

发明人： Shoji Akiyama ,  Ivan Celanovic ,  Natalija Jovanovic ,  Francis O'Sullivan ,  Kazumi Wada

IPC分类号： G02B6/00

CPC分类号： G02B1/115 ,  B82Y20/00 ,  G02B1/005

摘要： Light transmission is maximized through the pass band of a photonic bandgap (PBG) crystal (having alternating high- and low-index material) while preserving high reflection for stop band. An anti-reflective coating (ARC) is used to coat the PBG crystal wherein the ARC material has a refractive index of n=(nair×nhigh index material)1/2 and thickness around λc/8 where λc is center wavelength.

摘要翻译： 通过光子带隙（PBG）晶体（具有交替的高折射率材料和低折射率材料）的通带使光透射最大化，同时保持了对阻带的高反射。 使用抗反射涂层（ARC）涂覆PBG晶体，其中ARC材料具有n =（n xn>高折射率材料）的折射率 > 1/2>和lambdac / 8周围的厚度，其中lambdac是中心波长。

公开(公告)号：US07120335B2

公开(公告)日：2006-10-10

申请号：US10141317

申请日：2002-05-08

申请人： Anuradha M. Agarwal ,  Lionel C. Kimerling ,  Hermann A. Haus ,  Kazumi Wada ,  Steven G. Johnson ,  Christina Manolatou ,  Jurgen Michel ,  Victor Trinh Nguyen

发明人： Anuradha M. Agarwal ,  Lionel C. Kimerling ,  Hermann A. Haus ,  Kazumi Wada ,  Steven G. Johnson ,  Christina Manolatou ,  Jurgen Michel ,  Victor Trinh Nguyen

IPC分类号： G02B6/26

CPC分类号： G02B6/1228 ,  G02B6/305 ,  G02B2006/12095

摘要： An on-chip silicon-based optical coupler used to guide light from an optical fiber to a waveguide. The incoming wave is confined vertically by stacks of graded index materials. In the lateral direction, a linear taper formed by etched holes or trenches confines the wave.

公开(公告)号：US06904187B2

公开(公告)日：2005-06-07

申请号：US10643414

申请日：2003-08-19

申请人： Jan-Malte Fischer ,  Franz X. Kaertner ,  Kazumi Wada

发明人： Jan-Malte Fischer ,  Franz X. Kaertner ,  Kazumi Wada

IPC分类号： G02F1/01 ,  G02F1/015 ,  G02F1/025 ,  G02F1/313 ,  G02F1/295

CPC分类号： G02F1/3132 ,  G02F1/0126 ,  G02F1/025 ,  G02F2001/0152 ,  G02F2202/105

摘要： An optical switch/modulating device includes a pump waveguide that provides a pump light to the switch/modulating device. A waveguide element is positioned parallel to the pump waveguide and receives the pump light that causes the waveguide element to switch or modulate a signal light running through the pumped waveguide.

摘要翻译： 光开关/调制装置包括向开关/调制装置提供泵浦光的泵浦波导。 波导元件平行于泵浦波导定位并且接收使得波导元件切换或调制穿过泵浦波导的信号光的泵浦光。

公开(公告)号：US20050081910A1

公开(公告)日：2005-04-21

申请号：US10922420

申请日：2004-08-20

申请人： David Danielson ,  Jeremy Graham ,  Kazumi Wada ,  Trisha Montalbo ,  Lionel Kimerling

发明人： David Danielson ,  Jeremy Graham ,  Kazumi Wada ,  Trisha Montalbo ,  Lionel Kimerling

IPC分类号： H01L31/00 ,  H01L31/068

CPC分类号： H01L31/0687 ,  Y02E10/544

摘要： A system is disclosed for providing electrical power responsive to solar energy. The system includes a Si cell, an AlGaAs cell, and a Ge cell. The Si cell is for providing electrical power responsive to solar energy within a first frequency range. The AlGaAs cell is coupled to a first side of the Si cell, and is for providing electrical power responsive to solar energy within a second frequency range. The Ge cell is coupled to a second side of the Si cell, and the Ge cell provides electrical power responsive to solar energy within a third frequency range.

摘要翻译： 公开了一种用于提供响应于太阳能的电力的系统。 该系统包括Si电池，AlGaAs电池和Ge电池。 Si电池用于响应于第一频率范围内的太阳能提供电力。 AlGaAs单元耦合到Si单元的第一侧，并且用于在第二频率范围内响应于太阳能提供电功率。 Ge单元耦合到Si单元的第二侧，并且Ge单元提供响应于第三频率范围内的太阳能的电功率。

公开(公告)号：US06812495B2

公开(公告)日：2004-11-02

申请号：US10307779

申请日：2002-12-02

申请人： Kazumi Wada ,  Lionel C. Kimerling ,  Yasuhiko Ishikawa ,  Douglas D. Cannon ,  Jifeng Liu

发明人： Kazumi Wada ,  Lionel C. Kimerling ,  Yasuhiko Ishikawa ,  Douglas D. Cannon ,  Jifeng Liu

IPC分类号： H01L2715

CPC分类号： H01L27/146 ,  H01L21/02381 ,  H01L21/0245 ,  H01L21/02532 ,  H01L21/0262 ,  H01L31/103 ,  H01L31/1808 ,  H01L31/1864 ,  H01L31/1872 ,  Y02E10/50 ,  Y02P70/521 ,  Y10S438/933

摘要： A photodetector device includes a plurality of Ge epilayers that are grown on a substrate and annealed in a defined temperature range. The Ge epilayers form a tensile strained Ge layer that allows the photodetector device to operate efficiently in the C-band and L-band.

摘要翻译： 光电检测器装置包括多个Ge外延层，其在衬底上生长并在限定的温度范围内退火。 Ge外延层形成拉伸应变Ge层，其允许光电检测器件在C波段和L波段中有效地工作。

公开(公告)号：US06690871B2

公开(公告)日：2004-02-10

申请号：US09893263

申请日：2001-06-27

申请人： Kevin K. Lee ,  Desmond Lim ,  Kazumi Wada ,  Lionel C. Kimerling

发明人： Kevin K. Lee ,  Desmond Lim ,  Kazumi Wada ,  Lionel C. Kimerling

IPC分类号： G02B610

CPC分类号： G02B6/10 ,  G02B6/105 ,  G02B6/122 ,  G02B6/13 ,  G02B6/132 ,  G02B2006/12176

摘要： A planar waveguide that has a graded index layer at the core/cladding interface to reduce scattering losses due to core/cladding interface roughness. The refractive index at the core/cladding interface is changed from that of the core to that of cladding gradually by having a graded index layer. The graded index layer reduces the scattering of light traveling in the waveguide by reducing the effect of the roughness at the abrupt interface between the core and the cladding. Using a proper design, the graded index layer also minimizes the modal and polarization dispersion of the optical mode traveling in the waveguide.

摘要翻译： 平面波导，其在芯/包层界面处具有渐变折射率层，以减少由于芯/包层界面粗糙度引起的散射损耗。 通过具有渐变折射率层，芯/包层界面处的折射率从芯的折射率逐渐改变为包层的折射率。 渐变折射率层通过减小在芯和包层之间的突然界面处的粗糙度的影响来减少在波导管中传播的光的散射。 使用适当的设计，渐变折射率层还使在波导中行进的光学模式的模态和偏振色散最小化。

公开(公告)号：US20210109290A1

公开(公告)日：2021-04-15

申请号：US16989448

申请日：2020-08-10

申请人： Lionel C. KIMERLING ,  Jurgen MICHEL ,  Anuradha M. AGARWAL ,  Kazumi WADA ,  Drew Michael Weninger ,  Samuel Serna

发明人： Lionel C. KIMERLING ,  Jurgen MICHEL ,  Anuradha M. AGARWAL ,  Kazumi WADA ,  Drew Michael Weninger ,  Samuel Serna

IPC分类号： G02B6/30

摘要： Optical interconnects can offer higher bandwidth, lower power, lower cost, and higher latency than electrical interconnects alone. The optical interconnect system enables both optical and electrical interconnection, leverages existing fabrication processes to facilitate package-level integration, and delivers high alignment tolerance and low coupling losses. The optical interconnect system provides connections between a photonics integrated chip (PIC) and a chip carrier and between the chip carrier and external circuitry. The system provides a single flip chip interconnection between external circuitry and a chip carrier using a ball grid array (BGA) infrastructure. The system uses graded index (GRIN) lenses and cross-taper waveguide couplers to optically couple components, delivers coupling losses of less than 0.5 dB with an alignment tolerance of ±1 μm, and accommodates a 2.5× higher bandwidth density.

公开(公告)号：US20200158651A1

公开(公告)日：2020-05-21

申请号：US16691007

申请日：2019-11-21

申请人： Eveline Postelnicu ,  Samarth Aggarwal ,  Kazumi WADA ,  Jurgen MICHEL ,  Lionel C. KIMERLING ,  Michelle L. Clark ,  Anuradha M. AGARWAL

发明人： Eveline Postelnicu ,  Samarth Aggarwal ,  Kazumi WADA ,  Jurgen MICHEL ,  Lionel C. KIMERLING ,  Michelle L. Clark ,  Anuradha M. AGARWAL

IPC分类号： G01N21/77 ,  G02B6/125

摘要： A layer of amorphous Ge is formed on a substrate using electron-beam evaporation. The evaporation is performed at room temperature. The layer of amorphous Ge has a thickness of at least 50 nm and a purity of at least 90% Ge. The substrate is complementary metal-oxide-semiconductor (CMOS) compatible and is transparent at Long-Wave Infrared (LWIR) wavelengths. The layer of amorphous Ge can be used as a waveguide in chemical sensing and data communication applications. The amorphous Ge waveguide has a transmission loss in the LWIR of 11 dB/cm or less at 8 μm.

公开(公告)号：US10240980B2

公开(公告)日：2019-03-26

申请号：US15602323

申请日：2017-05-23

申请人： Juejun Hu ,  Tian Gu ,  Kazumi Wada ,  Anuradha Murthy Agarwal ,  Lionel Cooper Kimerling ,  Derek Matthew Kita ,  Junying Li ,  Fleur Jacolien Fok

发明人： Juejun Hu ,  Tian Gu ,  Kazumi Wada ,  Anuradha Murthy Agarwal ,  Lionel Cooper Kimerling ,  Derek Matthew Kita ,  Junying Li ,  Fleur Jacolien Fok

IPC分类号： G01N21/25 ,  G01J3/12 ,  G01J3/02 ,  G01J3/28 ,  G01J3/32

摘要： An apparatus for generating a spectral image includes a filter to receive incident light. The filter has a variable refractive index. The apparatus also includes a modulator, operably coupled to the filter, to modulate the variable refractive index of the filter so as to generate a plurality of optical patterns from the incident light. The plurality of optical patterns represents the spectral image and each optical pattern in the plurality of optical patterns corresponds to a different modulation of the variable refractive index. The apparatus further includes a detector, in optical communication with the filter, to detect the plurality of optical patterns.

公开(公告)号：US20110044362A1

公开(公告)日：2011-02-24

申请号：US12678953

申请日：2008-09-18

申请人： Kazumi Wada ,  Shiyun Lin ,  Yosuke Kobayashi ,  Peng Huei Lim

发明人： Kazumi Wada ,  Shiyun Lin ,  Yosuke Kobayashi ,  Peng Huei Lim

IPC分类号： H01S5/10

CPC分类号： H01S5/1071 ,  H01S5/021 ,  H01S5/1032 ,  H01S5/1075 ,  H01S5/12 ,  H01S5/3224

摘要： A light-emitting device having a ring optical resonator and capable of laser oscillation by a novel structure realized by working out the mechanism of light emission. The light-emitting device having a ring optical resonator fabricated on a base is characterized in that the optical resonator has a core made of a semiconductor and serving to propagate light and a clad formed on at least the base side of the core in the stack direction out of the base side and the opposite side of the core, at least the ring inner and outer peripheral surfaces of the core are covered with a transparent body having an index of refraction lower than that of the space or the clad, and a part of the ring inner and outer peripheral surfaces of the clad are covered with a transparent body having an index of refraction lower than that of the space or the clad.

摘要翻译： 一种具有环形光学谐振器并且能够通过实现发光机制而实现的新颖结构的激光振荡的发光器件。 具有在基底上制造的环形光学谐振器的发光器件的特征在于，光谐振器具有由半导体制成的并且用于传播光的芯和在堆叠方向上至少形成在芯的基极侧的包层 在芯的基部侧和相对侧之外，至少芯的环内周表面和外周表面被折射率低于空间或包层的透明体覆盖，并且部分 包层的环内外表面被折射率低于空间或包层的折射率的透明体覆盖。