公开(公告)号：US20050156778A1

公开(公告)日：2005-07-21

申请号：US10760021

申请日：2004-01-15

申请人： Daniel Yap

发明人： Daniel Yap

IPC分类号： G01S7/28 ,  G01S13/28 ,  G01S13/86

CPC分类号： G01S13/288 ,  G01S7/28

摘要： An apparatus for preparing a RF radar transmit waveform and for decoding RF return waveforms comprising: a RF-lightwave encoder and a decoding preprocessor to phase-encode the RF radar transmit waveform and partially decode the return signal, the encoder including switched optical delay lines for producing desired RF phase shifts, and the decoding preprocessor including a tapped optical delay line and optical delay lines that counteract the delays imposed by the delay lines of the encoder, wherein the RF-lightwave encoder and the decoders allow shorter compressed pulses and larger pulse-compression ratios to be achieved than can be obtained using conventional electronic approaches. Wideband transmit waveforms can be generated due to the use of the switched optical delay lines and, unlike prior art approaches, is not restricted to single-frequency waveforms. The taps can be weighted to accomplish objectives such as reduction of side lobes in the compressed pulse.

摘要翻译： 一种用于准备RF雷达发射波形并用于解码RF返回波形的装置，包括：RF光波编码器和解码预处理器，用于对RF雷达发射波形进行相位编码并部分解码返回信号，编码器包括用于 产生期望的RF相移，并且解码预处理器包括抽头光延迟线和抵消由编码器的延迟线施加的延迟的光延迟线，其中RF-光波编码器和解码器允许较短的压缩脉冲和较大的脉冲 - 压缩比要比使用常规电子方法获得的要高。 由于使用了切换的光学延迟线，可以产生宽带发射波形，并且与现有技术方法不同，不限于单频波形。 可以对水龙头进行加权以实现目标，例如减少压缩脉冲中的旁瓣。

公开(公告)号：US06867904B2

公开(公告)日：2005-03-15

申请号：US10417020

申请日：2003-04-16

申请人： Willie W. Ng ,  Daniel Yap

发明人： Willie W. Ng ,  Daniel Yap

IPC分类号： G02F1/35 ,  G02F1/365 ,  G02F2/02 ,  H01S5/40 ,  H04B10/142

CPC分类号： H01S5/4006

摘要： An apparatus containing an integrated optical circuit that enhances phase stability of the injection-locking process of two slave lasers. The integrated optical circuit helps to reduce phase noise by keeping environmental or mechanical perturbations uniform everywhere on that circuit. Also, the integrated optical circuit provides connections for additional components to be coupled, which can monitor and control the performance characteristics of the integrated optical circuit and the injection-locking process.

摘要翻译： 一种包含集成光电路的装置，其增强了两个从属激光器的注射锁定过程的相位稳定性。 集成光电路有助于通过保持环路或机械扰动在该电路上的任何地方均匀地降低相位噪声。 此外，集成光学电路为要耦合的附加组件提供连接，其可以监视和控制集成光学电路的性能特征和注入锁定过程。

公开(公告)号：US06781533B2

公开(公告)日：2004-08-24

申请号：US10281331

申请日：2002-10-25

申请人： Daniel Yap ,  Henrik T. Jensen

发明人： Daniel Yap ,  Henrik T. Jensen

IPC分类号： H03M300

CPC分类号： H03M3/496 ,  H03M3/43 ,  H03M3/456

摘要： A delta-sigma modulator has a first node at which is produced a difference signal equal to the difference in magnitude between a continuous time analog signal and an analog feedback signal generated from a digital output signal; an integrator, coupled to the first node, to integrate the difference signal, thereby producing a first integrated signal; a photonic sampler, coupled to the integrator, to sample the first integrated signal, thereby producing a sampled integral signal; a quantizer, coupled to the sampler, to quantize the sampled integral signal, thereby producing the digital output signal; wherein an output of the quantizer is coupled to the first node through a digital to analog converter.

摘要翻译： Δ-Σ调制器具有第一节点，在该第一节点处产生等于连续时间模拟信号和从数字输出信号产生的模拟反馈信号之间的幅度差的差信号; 耦合到第一节点的积分器，以整合差分信号，从而产生第一集成信号; 耦合到积分器的光子采样器对第一集成信号进行采样，从而产生采样的积分信号; 耦合到采样器的量化器，以量化采样的积分信号，从而产生数字输出信号; 其中所述量化器的输出通过数模转换器耦合到所述第一节点。

公开(公告)号：US06483969B1

公开(公告)日：2002-11-19

申请号：US09452942

申请日：1999-12-01

申请人： Daniel Yap ,  Anson Au

发明人： Daniel Yap ,  Anson Au

IPC分类号： G02B642

CPC分类号： G02B6/4204 ,  G02B6/423 ,  G02B6/4249

摘要： A method and apparatus for aligning an optical fiber to an optoelectronic element. The optical fiber and optoelectronic element are attached to a base. The base is made from a first crystallographic orientation material, and a lens is made from a second crystallographic orientation material. The lens is aligned to the base using the crystallographic orientations, and the optical fiber and optoelectronic element are aligned to the base/lens assembly.

摘要翻译： 一种用于将光纤对准光电元件的方法和装置。 光纤和光电子元件连接到基座。 基座由第一结晶定向材料制成，并且透镜由第二结晶取向材料制成。 透镜使用结晶取向与基底对准，并且光纤和光电元件与底座/镜头组件对准。

公开(公告)号：US06456761B2

公开(公告)日：2002-09-24

申请号：US09920666

申请日：2001-07-31

申请人： Daniel Yap ,  Anson Au

发明人： Daniel Yap ,  Anson Au

IPC分类号： G02B632

CPC分类号： G02B6/4204 ,  G02B6/423 ,  G02B6/4249

摘要： A method and apparatus for aligning an optical fiber to an optoelectronic element. The optical fiber and optoelectronic element are attached to a base. The base is made from a first crystallographic orientation material, and a lens is made from a second crystallographic orientation material. The lens is aligned to the base using the crystallographic orientations, and the optical fiber and optoelectronic element are aligned to the base/lens assembly.

公开(公告)号：US06229189B1

公开(公告)日：2001-05-08

申请号：US09222612

申请日：1998-12-24

申请人： Daniel Yap ,  Daniel Docter ,  William Stanchina

发明人： Daniel Yap ,  Daniel Docter ,  William Stanchina

IPC分类号： H01L2714

CPC分类号： H01L31/12 ,  H01L31/03046

摘要： An optoelectronic device has an epitaxial layer structure that has a substrate and a first layer formed adjacent to the substrate. The first layer may, for example, form a contact layer. A second layer is formed adjacent to the first layer. The second layer forms a selectively optically varying layer, so that during a first state the second layer is optically absorbing and during a second state the layer is optically transparent. A third layer is formed adjacent to the second layer. A fourth layer is formed adjacent to the third layer. The fourth layer is an optically transparent layer. An optoelectronic device and an electronic device may be formed on the same substrate that share the same layers. The layers used depends upon the devices formed.

摘要翻译： 光电子器件具有外延层结构，其具有衬底和邻近衬底形成的第一层。 第一层可以例如形成接触层。 形成与第一层相邻的第二层。 第二层形成选择性光学变化的层，使得在第一状态期间第二层是光学吸收的，并且在第二状态期间该层是光学透明的。 形成与第二层相邻的第三层。 形成与第三层相邻的第四层。 第四层是光学透明层。 可以在共享相同层的相同基板上形成光电子器件和电子器件。 使用的层取决于所形成的装置。

公开(公告)号：US6037719A

公开(公告)日：2000-03-14

申请号：US57894

申请日：1998-04-09

申请人： Daniel Yap ,  Robert Y. Loo ,  Juan Lam

发明人： Daniel Yap ,  Robert Y. Loo ,  Juan Lam

IPC分类号： G09G3/22 ,  H01H59/00 ,  G09G3/10

CPC分类号： G09G3/22 ,  H01G5/18 ,  H01G5/38 ,  H01G5/40 ,  G09G2300/08 ,  G09G2300/0842 ,  H01H59/0009

摘要： A display includes a plurality of light-emitting devices arranged as a matrix of pixels and an addressing circuit coupled to each respective light-emitting device. The addressing circuit includes a plurality of micromachined electromechanical (MEM) switches operable to control the plurality of light-emitting devices. Each MEM switch includes a cantilever beam and a control electrode spaced therefrom to deflect the cantilever beam electrostatically in order to close or open the switch.

摘要翻译： 显示器包括被布置为像素矩阵的多个发光器件和耦合到每个相应的发光器件的寻址电路。 寻址电路包括可操作以控制多个发光器件的多个微加工机电（MEM）开关。 每个MEM开关包括悬臂梁和与其分开的控制电极，以静电偏转悬臂梁，以便关闭或打开开关。

公开(公告)号：US5611008A

公开(公告)日：1997-03-11

申请号：US591854

申请日：1996-01-26

申请人： Daniel Yap

发明人： Daniel Yap

IPC分类号： G02B6/42 ,  H01P1/00 ,  H01S5/00 ,  H04B10/02 ,  H04B10/28 ,  G02B6/12

CPC分类号： G02B6/4246 ,  G02B6/423 ,  G02B6/4232

摘要： A low-loss substrate system is provided for carrying and interconnecting optoelectronic/microwave circuits. The system includes a high-resistivity substrate, e.g., silicon of resistivity >1.times.10.sup.3 ohm-centimeter. A dielectric layer, e.g., silicon dioxide, is preferably deposited over at least a portion of the substrate. Low-loss microwave transmission members and passive microwave components, e.g., capacitors and spiral inductors, can be fabricated directly on the dielectric layer with thin-film techniques. Optoelectronic and microwave integrated circuits are preferably mounted on the substrate system with solder bumps and bonding pads. Other portions of the substrate can define grooves for receiving optical fibers. To enhance optical alignment, the grooves and bonding pads are preferably located with photolithographic techniques. The substrate system is especially suited for optoelectronic/microwave circuits that are realized with hybrid integration structures.

摘要翻译： 提供低损耗衬底系统用于携带和互连光电/微波电路。 该系统包括高电阻率基底，例如电阻率> 1×103欧姆厘米的硅。 绝缘层，例如二氧化硅，优选沉积在衬底的至少一部分上。 可以利用薄膜技术在电介质层上直接制造低损耗微波传输部件和无源微波部件，例如电容器和螺旋电感器。 光电子和微波集成电路优选地安装在具有焊料凸块和焊盘的衬底系统上。 基板的其他部分可以限定用于接收光纤的凹槽。 为了增强光学对准，凹槽和焊盘优选地以光刻技术定位。 衬底系统特别适合用混合集成结构实现的光电/微波电路。

公开(公告)号：US08995838B1

公开(公告)日：2015-03-31

申请号：US12959287

申请日：2010-12-02

申请人： James H. Schaffner ,  Kevin Geary ,  Daniel Yap

发明人： James H. Schaffner ,  Kevin Geary ,  Daniel Yap

IPC分类号： H04B10/2575 ,  H01P3/16

CPC分类号： H01P3/16 ,  H01P5/087 ,  H01P5/107 ,  H01Q13/02 ,  H04B10/90 ,  H04B2210/006

摘要： A waveguide assembly for a use with, for example, a microwave receiver. The waveguide assembly includes: a waveguide; a tapered structure disposed within the waveguide, the tapered structure tapering in thickness from a first end with a zero height to a second end where the tapered structure has a height which nearly fills, but does not completely fill, the waveguide, to thereby define a modulator receiving space between the tapered structure and an adjacent wall of said waveguide. The second end of the tapered structure is preferably disposed adjacent an open circuited end of the waveguide. An electro-optic modulator is disposed on a dielectric substrate, the dielectric substrate being disposed at least partially within the modulator receiving space and the electro-optic modulator being disposed so that it is located, in use, at an antinode of a standing wave of the waveguide assembly.

摘要翻译： 用于与例如微波接收器一起使用的波导组件。 波导组件包括：波导; 布置在波导内的锥形结构，锥形结构从具有零高度的第一端到第二端的厚度渐缩，其中锥形结构具有几乎填充但不完全填充波导的高度，从而限定了 调制器在所述锥形结构和所述波导的相邻壁之间接收空间。 锥形结构的第二端优选地设置在波导的开路端附近。 将电光调制器设置在电介质基片上，电介质基底至少部分地设置在调制器接收空间内，电光调制器被设置为使得它在使用中位于驻波的波腹处 波导组件。

公开(公告)号：US08750709B1

公开(公告)日：2014-06-10

申请号：US12176114

申请日：2008-07-18

申请人： James H. Schaffner ,  Daniel Yap

发明人： James H. Schaffner ,  Daniel Yap

IPC分类号： H04B10/80

CPC分类号： H04B10/90 ,  H01P5/12 ,  H01Q13/02 ,  H04B2210/006

摘要： A waveguide of radio frequency electromagnetic fields is multi-furcated into a plurality of radio frequency waveguide sections, each radio frequency waveguide section having an optoelectronic modulator electrically coupled to it. Each optoelectronic modulator has an optical waveguide disposed therein such that, in use, light traveling in the optical waveguides of the optoelectronic modulators travels in a direction orthogonal with respect to the direction the radio frequency electromagnetic field travels in the radio frequency waveguide sections. The plurality of radio frequency waveguide sections are fed from a common source of said radio frequency energy. In some embodiments, each radio frequency waveguide section has a dielectric material having a length and/or a dielectric constant selected such that a relative time delay of the radio frequency energy propagating in the radio frequency waveguide sections accommodates for a time delay of the light traveling from one optoelectronic modulator to a next optoelectronic modulator of a series connection of multiple optoelectronic modulators.

摘要翻译： 射频电磁场的波导多分割成多个射频波导部分，每个射频波导部分具有与其电耦合的光电调制器。 每个光电调制器具有设置在其中的光波导，使得在使用中，在光电子调制器的光波导中行进的光在相对于射频电磁场在射频波导部中行进的方向正交的方向上行进。 多个射频波导段从所述射频能量的公共源馈送。 在一些实施例中，每个射频波导部分具有选择的长度和/或介电常数的介电材料，使得在射频波导部分中传播的射频能量的相对时间延迟适应于光行进的时间延迟 从一个光电子调制器到下一个光电子调制器的多个光电子调制器的串联连接。