公开(公告)号：US06781533B2

公开(公告)日：2004-08-24

申请号：US10281331

申请日：2002-10-25

Applicant: Daniel Yap ,  Henrik T. Jensen

Inventor： Daniel Yap ,  Henrik T. Jensen

IPC: H03M300

CPC classification number: H03M3/496 ,  H03M3/43 ,  H03M3/456

Abstract: 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.

Abstract translation: 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

Applicant: Daniel Yap ,  Anson Au

Inventor： Daniel Yap ,  Anson Au

IPC: G02B642

CPC classification number: G02B6/4204 ,  G02B6/423 ,  G02B6/4249

Abstract: 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.

Abstract translation: 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

Applicant: Daniel Yap ,  Anson Au

Inventor： Daniel Yap ,  Anson Au

IPC: G02B632

CPC classification number: G02B6/4204 ,  G02B6/423 ,  G02B6/4249

Abstract: 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

Applicant: Daniel Yap ,  Daniel Docter ,  William Stanchina

Inventor： Daniel Yap ,  Daniel Docter ,  William Stanchina

IPC: H01L2714

CPC classification number: H01L31/12 ,  H01L31/03046

Abstract: 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.

Abstract translation: 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

Applicant: Daniel Yap ,  Robert Y. Loo ,  Juan Lam

Inventor： Daniel Yap ,  Robert Y. Loo ,  Juan Lam

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

CPC classification number: G09G3/22 ,  H01G5/18 ,  H01G5/38 ,  H01G5/40 ,  G09G2300/08 ,  G09G2300/0842 ,  H01H59/0009

Abstract: 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.

Abstract translation: 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

Applicant: Daniel Yap

Inventor： Daniel Yap

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

CPC classification number: G02B6/4246 ,  G02B6/423 ,  G02B6/4232

Abstract: 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.

Abstract translation: 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

Applicant: James H. Schaffner ,  Kevin Geary ,  Daniel Yap

Inventor： James H. Schaffner ,  Kevin Geary ,  Daniel Yap

IPC: H04B10/2575 ,  H01P3/16

CPC classification number: H01P3/16 ,  H01P5/087 ,  H01P5/107 ,  H01Q13/02 ,  H04B10/90 ,  H04B2210/006

Abstract: 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.

Abstract translation: 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

Applicant: James H. Schaffner ,  Daniel Yap

Inventor： James H. Schaffner ,  Daniel Yap

IPC: H04B10/80

CPC classification number: H04B10/90 ,  H01P5/12 ,  H01Q13/02 ,  H04B2210/006

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08569675B1

公开(公告)日：2013-10-29

申请号：US13045072

申请日：2011-03-10

Applicant: Daniel Yap ,  Monica Minden

Inventor： Daniel Yap ,  Monica Minden

IPC: G02F2/00

CPC classification number: H04B10/676 ,  H04B10/11

Abstract: The invention is a Demodulator for an Optical Analog Pulse Position Modulated signal suitable for inclusion in receivers for Free Space Optical communication systems. In one embodiment the Demodulator may use the pulse position modulated optical information signal and the clock signal with different wavelengths. By proper biasing of a Semiconductor Optical Amplifier and selection of wavelengths for the information signal and the clock signal, the performance of the Demodulator is made insensitive to noise in the received signals.

Abstract translation: 本发明是用于光模拟脉冲位置调制信号的解调器，适用于包含在自由空间光通信系统的接收机中。 在一个实施例中，解调器可以使用具有不同波长的脉冲位置调制光信息信号和时钟信号。 通过半导体光放大器的适当偏置和信号信号和时钟信号的波长选择，解调器的性能对接收信号中的噪声不敏感。

公开(公告)号：US08526829B1

公开(公告)日：2013-09-03

申请号：US12868378

申请日：2010-08-25

Applicant: Daniel Yap ,  Irina Ionova

Inventor： Daniel Yap ,  Stanislav I Ionov

IPC: H04B10/04

CPC classification number: H04B10/524 ,  H04L25/4902

Abstract: A PPM transmitter includes an optical clock generator for generating equally-spaced optical pulses with a sampling period T; an encoder for transforming an incoming waveform U(t) into a linear combination V(t) of U(t) and a delayed output V(t−kT) according to a rule V(t)=U(t)+aV(t−kT), where k is a positive integer, V(t) is voltage generated by the encoder and a is a coefficient; and an optical delay generator for delaying optical pulses generated by the optical clock generator in proportion to the voltage V(t), such that Δtn=bV(t), where b is another coefficient and where Δtn is the amount of delay imposed by the optical delay generator. The PPM transmitter functions with a PPM receiver for communicating data without the need to transmit or otherwise provide a clock signal. The PPM receiver decodes an original series of the delayed optical pulses Q(t) and a second series Q(t−ckT) delayed by ckT where c is a coefficient.

Abstract translation: PPM发射机包括用于产生具有采样周期T的等间隔的光脉冲的光时钟发生器; 用于根据规则V（t）= U（t）+ aV（t）将输入波形U（t）变换为U（t）的线性组合V（t）和延迟输出V（t-kT） t-kT），其中k是正整数，V（t）是由编码器产生的电压，a是系数; 以及光延迟发生器，用于与光电时钟发生器产生的光脉冲成比例地延迟电压V（t），使得Deltatn = bV（t），其中b是另一个系数，并且其中Deltatn是由 光延迟发生器。 PPM发射机具有用于传送数据的PPM接收机，而不需要传输或以其他方式提供时钟信号。 PPM接收机解码延迟的光脉冲Q（t）的原始序列和延迟ckT的第二序列Q（t-ckT），其中c是系数。